Dissertations / Theses on the topic 'Archaeometallurgy'
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Kyek, Andreas. "Non-destructive Mössbauer spectroscopy in archaeometallurgy." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=959786333.
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Budd, Paul David. "A metallographic investigation of Eneolithic arsenical copper." Thesis, University of Bradford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358024.
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Bennett, Anna. "Copper metallurgy in central Thailand." Thesis, University of London, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338123.
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Dungworth, David Barry. "Iron Age and Roman copper alloys from northern Britain." Thesis, Durham University, 1995. http://etheses.dur.ac.uk/1024/.
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Photos, Euphemia. "Early extractive iron metallurgy in N Greece : a unified approach to regional archaeometallurgy." Thesis, University College London (University of London), 1987. http://discovery.ucl.ac.uk/1348990/.
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Aspects of early Greek extractive iron metallurgy are investigated here, for the first time, with particular emphasis on Macedonia, Greece's most metals-rich province. The subject is approached experimentally by considering equally the ores, slag and artefacts of iron in Macedonia, through the analytical examination of archaeological slag and artefacts, the experimental smelting of Macedonian ores and subsequent analytical investigation of the slag and blooms produced. The mineral resources geology of Macedonia is presented. The historical background to mining and metal working in Macedonia from the Early Iron Age (tenth century BC) to the turn of the present century is documented. The literature on the introduction of iron into Greece, and the East Mediterranean more generally, is critically reviewed, and in the light of results obtained, especially from Thasos, it is argued that the origins of iron making in Macedonia, if not elsewhere in Greece, should be sought locally during the Late Bronze Age. Despite the absence of excavated furnace remains, it has been possible, through analytical examination of metallurgical waste, to trace the operation of the bloomery in Macedonia continuously for nearly thirty centuries. That a considerable variety of iron ores were exploited was elucidated by the analysis of slag inclusions in a large number of iron artefacts from Vergina and from sites on Thasos and the East Macedonian Mainland, spanning chronologically the Early Iron Age to the Byzantine period. The titanium-rich magnetite sands on Thasos and at Vrontou on the Mainland were shown to have been worked from the Hellenistic/Roman to the turn of this century. A second century BC nickel-rich bloom found at the Hellenistic site at Petres in West Macedonia testified, for the first time, to the smelting of nickel-rich iron laterites in Greece, while the manganese-rich iron deposits in Palaia Kavala district were worked for their precious metals content, probably during Ottoman times and perhaps as early as the Classical period. It is suggested that the Skapte Hyle of the classical texts may be located in the Palaia Kavala district. A fresh appraisal of the depiction of furnaces on Black and Red Figure Attic vases of the sixth and fifth centuries BC suggests that the bloomery process may have developed at that time to a level not previously suspected. The classical texts, the function of the cauldron on the furnace top and experimental meltings carried out in the process of this work all point to the production of wrought iron/steel through the decarburisation of high carbon iron in a fining hearth. It is argued that the furnaces depicted on the vases are themselves fining hearths, the cauldron sealing the furnace top in order for the air blast to be directed over the molten mass.
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CAMPOS, GUADALUPE DO NASCIMENTO. "ARCHAEOMETALLURGY STUDY OF METALLIC ARTIFACTS RECOVERED FROM HISTORICALS SITES IN RIO DE JANEIRO." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=7845@1.
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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOREste trabalho tem como objetivo efetuar um estudo arqueometalúrgico de objetos ferrosos e não-ferrosos resgatados de sítios históricos do Rio de janeiro. A pesquisa experimental desenvolveu uma metodologia de análise utilizando-se de técnicas destrutivas como Microscopia Ótica (MO), Microscopia Eletrônica de Varredura (MEV), Microscopia Eletrônica de Transmissão e não destrutivas como Fluorescência de Raio X (FRX) e Emissão de Raios-X por Indução de Partículas (PIXE). Os objetos foram analisados com o intuito de caracterizar sua composição, estrutura e método de elaboração. Estes correspondem a seis artefatos de natureza metálica não-ferrosa e um de natureza metálica ferrosa. O objeto metálico ferroso corresponde a uma enxada. As características microestruturais dos objetos estão correlacionadas com a função que esses desempenhavam na época e indicativa de que a enxada possa ter sido feita no Brasil por escravos africanos. A análise da enxada permite concluir que é constituída de um ferro pudlado e que foi processada por fundição e forjamento. Quanto aos objetos não-ferrosos, o rosário é constituído de um latão monofásico mais rico em cobre. Com relação à fabricação do rosário pode-se concluir de que seja de origem européia, sendo decorrente de um minério pirítico. As medalhas são de procedência européia constituídas de latão. Historicamente, pode-se deduzir que são referentes ao século XVIII. Conclui-se que as duas moedas do Sítio Rochedo sejam originárias de fontes diferentes, constatado pelas análises químicas. Porém, as concentrações químicas da moeda de 1821 são próximas a uma das moedas de 40 réis. A presente tese permitiu evidenciar a importância da sistemática de trabalho experimental de caracterização, a partir de técnicas destrutivas e nãodestrutivas de materiais, de objetos arqueológicos para estabelecer seu contexto histórico.
This work undertakes an archeometallurgical study of ferrous and non-ferrous artifacts recovered from historical sites of Rio de Janeiro. The experimental research developed an analytical methodology based on destructive techniques, such as Optical Microscopy (OM), Scanning Electronic Microscopy (SEM) and Transmission Electronic Microscopy (TEM); as well as non- destructive techniques, namely X-Ray Fluorescence (XRF) and Particle Induction X-Ray Emission (PIXE). These artifacts were analyzed in order to characterize their composition, structure and elaboration/processing methods. There are six artifacts with a non-ferrous metallic nature and one with a ferrous metallic nature. The ferrous metallic artifact was a hoe. The microstructure characteristics is related to the usage of this object at that time, and indicates that the hoe could have been made in Brazil by African slaves. The analysis of the hoe indicates that it was elaborated from puddle iron and that it had been processed by foundry and forging. The rosary, one of the non-ferrous artifacts, is formed by singlephase brass riche in copper; and according to historical research it is of European origin, deriving from pyrite ore. The medals are also of European origin and are based on brass. Historically one can deduce that they are dated from the 18th century. The two coins from the Rochedo site most probably came from distinct sources, as validated by the chemical analysis. However, the chemical composition of the 1821 coin is close to that of the 40 réis coin. The present thesis has shown the importance of a systematic methodology to characterize ancient objects combining both destructive and non- destructive techniques.
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Pereira, Filipa Isabel Peralta da Silva. "Archaeometallurgical study of artefacts from Castro de Vila Nova de São Pedro (Azambuja, Portugal)." Master's thesis, Faculdade de Ciências e Tecnologia, 2011. http://hdl.handle.net/10362/6220.
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Dissertação para obtenção do Grau de Mestre em
Conservação e RestauroThe Castro de Vila Nova de São Pedro (VNSP) is a settlement located at Azambuja, district of Lisbon, occupied during the third and second millennia BC, predominantly during the Chalcolithic period. A diversified collection of 275 copper-based artefacts (complete or in a fragmented condition) belonging to VNSP was studied for this thesis using non-destructive and micro-destructive analytical techniques. The classification of the objects according to its main chemical elements was performed by using EDXRF spectrometry. A selection of 53 of these artefacts was analysed by micro-EDXRF spectrometry to quantify the alloy compositions. The microstructural characterisation of the metal alloys, as well as the identification of the thermomechanical processes applied to the shaping of the artefacts was accomplished through optical microscopy, supported by SEM-EDS and supplemented by Vickers micro-hardness measures to establish the actual effectiveness of the thermomechanical processes in the hardness of the artefact. Results show that the initial collection is mainly composed of copper and arsenical copper. In the subset of 53 artefacts, 38% were considered copper alloyed with arsenic (As>2%). A statistically significant association was found between copper alloys with arsenic contents over 2% and artefacts identified as weapons. This could point out as the addition of arsenic in order to increase the weapon’s mechanical strength. The determination of the “chaîne opératoire” by microstructural analysis show that the majority of this subset (73%) was finished with forging plus annealing operations cycles and 23% of the artefacts received final cold hammering. In several cases, the presence of arsenic rich phases in the microstructure shows no evidence of controlling cooling rates during the casting operation. No direct correlation was found between the arsenic content of the alloy and its hardness, assessed by Vickers microhardness testing. Nevertheless, proof was found of a higher hardness near the blade regions of the artefacts.
Fundação da Faculdade de Ciências e Tecnologia,project METALURGIA PRIMITIVA NO TERRITÓRIO PORTUGUÊS - PTDC/HIS-ARQ/110442/2008
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Vetta, Ivana Gabriella. "Slags and Ores: Metalworking in the Greek Early Iron Age Settlement at Zagora, Andros." Thesis, The University of Sydney, 2020. https://hdl.handle.net/2123/22304.
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Archaeological excavation of the Early Iron Age settlement at Zagora, Andros (Greece), from 1967 to 1974, yielded evidence of metalworking in various locations across the site, however no further analysis was carried out on the material. It is nevertheless clear from this data, as well as the results of archaeological surface survey conducted at the site in 2012, that metal production was an extensive industry at the site. Archaeometallurgical analysis has the potential to provide crucial information regarding metalworking at Zagora and can in turn, contribute to the broader understanding of the integration of industrial activity within the settlement. Such data forms a useful comparison with other contemporary sites at which metalworking was conducted, such as those at Oropos and Eretria, allowing for a better regional understanding of the role of metalworking during the Geometric period. Several different methods of analysis of this archaeometallurgical evidence from Zagora help to provide a framework for understanding the operation of metalworking at the site. Firstly, by cataloguing these finds by stratigraphic context, the spatial distribution and quantification of metallurgical slags and metalworking debris can be established. Secondly, through scientific investigation of the samples, using techniques such as Portable X-Ray Fluorescence, Scanning Electron Microscopy and Inductively Coupled Plasma Mass Spectrometry, the gross composition of the assemblage can be understood through the provision of semiquantitative compositional and mineralogical data. Through detailed analysis of this metallurgical waste, we can begin to identify the manufacturing techniques that were available to the ancient metalworkers of Zagora, the ore sources that they utilised, and the spatial layout of metalworking within the settlement. This analysis will be contextualised within the chaîne opératoire, and how Zagora in turn fits into the wider landscape of Early Iron Age metallurgy.
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Mathoho, Ndivhuho Eric. "Archaeology and archaeometallurgy in Limpopo province of South Africa: case studies of early iron age sites of Mutoti and Thomo." Doctoral thesis, Faculty of Science, 2021. http://hdl.handle.net/11427/33794.
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Decades of archaeological research have established the chronology of the history of culture by farmers in northern South Africa from the beginning of the first millennium AD to the recent past (1900). This thesis sought to explore the archaeology and archaeometallurgy of the early inhabitants of the Lowveld region. Rigorous methodological and theoretical approaches, which include Ethno-Historical, archaeological and archaeometallurgical studies, were employed to acquire the relevant information required to address research problems. Ceramic typology and settlement pattern studies were used to establish the culture-history to contextualise Iron Age sites, while Optical Microscopy, X-Ray Fluorescence analysis (XRF) and Scanning Electron Microscopy (SEM) were used to investigate the metallurgical remains to understand metal production technology. Both Mutoti and Thomo sites share several similarities, namely, they are situated near the perennial streams, the presence of metal-production sites and the predominant pottery types, consisting of short and long neck vessels dominated by comb stamping, incision and punctate decorations on the rim, neck and shoulder of the vessels. Ceramic tradition analysis revealed that both Mut 2 and Thomo combine ceramic designs and attributes that appeared in the region near the beginning of the first Millennium AD, that is the Urewe and the Kalundu traditions. Garonga Phase tradition developed from the Urewe tradition which represent the first facie, represented by the Silver Leaves sites of the Kwale branch ceramic tradition which dates to AD 280- 420 and the Kalundu tradition (which starts from Happy Rest and progresses to Diamant - Phase 2) which dates from the sixth century AD, both traditions share distinctive ceramics styles and decoration attributes (Burrett, 2007; Huffman, 2007). The radiocarbon-based chronology suggests that Mut 2 and Thomo sites were occupied contemporaneously and dated to AD 650-850. Analysis of the distribution of materials objects across Mut 2 site revealed active participation in both local and international trade network (Soapstone and Islamic ceramics) operated at a village status. Some of the craft production related evidence include metal production, eggshell beads and cloth manufacturing. Metal production was regarded as signature of power and authority in Iron Age period (Herbert, 1996). More research may strengthen this observation.
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Baines, Robert, and robert baines@rmit edu au. "The Reconstruction of Historical Jewellery and its Relevance as Contemporary Artefact." RMIT University. Art, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20070419.153736.
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The dating of ancient jewellery is given by the archaeological context. Technology applied by the ancient goldsmith is traceable through archaeometallurgy. The aim of this research is to analyse historical jewellery and to construct copies based on the known technology of the era. Resultant laboratory constructions with their historical correctness and the new knowledge of jewellery structures will then be available for reworking to convey a contemporary visual relevance and a statement of history. The results of these analyses and reconstructions will form the basis of metalwork objects in which contemporary aesthetics are informed by historical practice. Jewellery offers a view into history, of cultural descriptions of stylistic, chemical and methodological correctness. For diagnostic purposes there is the expectation of an archaeological correctness within the fabric and manufacture of the jewellery object. From the vantage point of a contemporary goldsmith, t his has provided me with an arena for artistic interpretation-for 'play'. Historical jewellery becomes contemporary jewellery forms and the 'play' functions as a stumbling block and an upheaval within orthodox classification of authenticity. There is in this disturbance an intervention with coontemporary ephemeral materials into the jewellery artefact in which I manufacture a semblance of an identified 'correctness'. Jewellery remains in a better state of preservation when hidden or concealed-not exposed. The jewellery object once surfaced, discovered, excavated or plundered or even worn becomes part of our time for reworking. Knowledge and applications of technology become the vehicle for scrutinizing these objects. We live in an era where the ancient and the recent, the authentic and the bogus, have begun to mingle and interbreed in the corridors of hyperspace. Television stages Xena the Warrior Princess encountering the young Buddha in the entourage of King Arthur. Fakes with historical associations can s ometimes be considered authentic as a shroud of 'history' can encompass the object to the satisfaction of the naive connoisseur who wants to believe, wants to believe, wants to believe, wants to believe ... . Jewellery as document is available for interpretation-for'play'. There is potential to return to an imaginary history where ffictional detail has been confused with historic fact and this can be both intentional and unintentional. Jewellery of the past therefore exists in the present and the jewellery artefact becomes available for evaluation and for 'play'. In the analysing and categorizing of type, jewellery as vehicle conveying the past can become a mixture of one's own inventions and cultural inheritance. From the vantage point of a goldsmith, I am considering how formulated heritage is available for reference, questioning and modification. The option to copy, to replicate, or to modify the historic document jewellery is a possibility and new input can verify authenticity or engender falsehood throu gh the artistic reinterpretation.
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Patriksdotter, Amanda. "Vikingatida förgyllningstekniker : En studie av förgyllningstekniker tillämpade på föremål från Birka med SEM-EDS." Thesis, Stockholms universitet, Arkeologiska forskningslaboratoriet, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-174819.
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Studies with primary focus on Viking age gilding techniques in Scandinavia has not been carried out since the sixties. During the past 50 years knowledge about prehistoric gilding techniques and traces of them in the archeological material, as well as the usage of natural sciences within archaeology, has developed considerably. The aim of this thesis was to revisit the topic of gilding and shed new light on Viking age metalworking in Scandinavia with focus on gilding techniques. The second aim was to determine the possibilities and limitations of the study of gilding with a non-destructive methodology. The surfaces of 13 metal objects, four of which are indigenous and the rest are imported goods, were analyzed with SEM-EDS. The chemical compositions of the gilded layers as well as the underlying silver- or copper alloys were analyzed. Furthermore, observations of micro morphological structures were carried out on the gilt surfaces. Interpretations of both chemical compositions and micro morphology were carried out in order to identify what technique or techniques have been used for gilding. The results show that two of artefacts have not been gilded at all, five of them have been fire gilded and the results of the remaining six objects are inconclusive mainly due to lacking reference data. It can be concluded that further research regarding the aging of gilt surfaces on gilded artefacts, more specifically the loss of mercury in fire gilded surfaces over time, needs to be carried out.
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Girbal, Brice Max. "The technological context of crucible steel production in northern Telangana, India." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/28496.
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The innovation of crucible steel, a high-carbon, homogeneous, slag-free steel, is regarded as a milestone in the history of the development of ferrous metallurgy. Associated in popular literature with the making of swords, particularly in the Early Islamic period, crucible steel, also known as wootz, possesses exceptional properties of hardness and strength. While much is now understood about its metallurgical composition and structure, little is known of its origins and spread. Few archaeological sites have been uncovered and to date pre-industrial production of this alloy is only known from Central Asia and South Asia. Previous studies have largely focused on individual sites in isolation from wider regional patterns of ferrous metallurgy. As a refining process of iron, it is argued here that crucible steel has a symbiotic relationship with the smelting technologies that produced the raw material for refining. This thesis explores the value of assessing crucible steel production within its wider landscape, cultural and technological context by presenting the evidence from Northern Telangana, India. Historical sources and recent archaeological field surveys have shown that Telangana has a rich metallurgical past, including the manufacture of crucible steel. Despite this, little archaeological work has been conducted in the region to elucidate the nature, scale and diversity of the metallurgical technologies that underpinned its production. Following a major reconnaissance survey in 2010 by the Pioneering Metallurgy Project, the present study tackled the assessment of the large body of field data and the recording of the technological waste assemblage collected. By combining detailed morphological analyses of the collected materials and contextual information recorded during field survey, a better understanding of the techno-cultural role of crucible steel was gained. Technological variations were identified across the survey area and the inter-relationship between iron smelting and crucible steel was assessed. The study reveals that crucible steel was embedded within a long-established local and regional tradition of iron smelting and concludes that it represented the intensification of a pre-existing iron processing industry. The evidence points to a widespread crucible steel production industry with varying degrees of site specialisation, indicating that it was perhaps more common than the few isolated sites commonly referred to in the literature suggests. The comparison of the material evidence with other production sites in Central and South Asia also revealed close parallels to the latter suggesting that they belonged to the same regional manufacturing tradition.
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Cue´nod, Aure´lie. "Rethinking the bronze-iron transition in Iran : copper and iron metallurgy before the Achaemenid Period." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:6b4a5d9c-55dc-4569-88c4-0814bc50c6d2.
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Iran, a country rich in mineral resources, has a long history of metal working. Copper objects first appeared in the 7th millennium BC and in the following millennia, copper became the material of choice for the production of many objects. Artefacts of iron began to appear in the mid 2nd millennium BC and by the mid 1st, iron had replaced bronze for most uses, but the reasons for this change remain unclear. This thesis seeks to examine the transition from bronze to iron metallurgy from a new angle. By looking at changes in copper-based metallurgy between the Bronze Age and the Iron Age, it attempts to better understand the context in which iron metallurgy developed. To that end, the results of previously published chemical analyses of over 5000 copper-based objects from Iran and neighbouring regions and the lead isotope analyses of about 380 objects were assembled in a database. The tin, arsenic, nickel, antimony and silver concentrations in particular are studied. The data is divided into 16 metal groups based on the absence or presence of the latter four elements. The study of the main groups allows us to describe interesting new patterns of metal movement and recycling. It appears that before the end of the Bronze Age, a number of copper sources and/or trade routes from both east and west declined, leading to a reliance on more local sources for copper and tin in the Iron Age. The practice of recycling from the 3rd millennium BC onward is also evidenced. Overall, it seems that iron appeared within a thriving bronze industry, with a good access to metal resources and a developed understanding of the possibilities offered by copper (alloying, recycling, mixing…). Was it then the more ‘permanent’ nature of iron that attracted the ancient metal-workers and led to its advent?
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Frame, Lesley. "Technological change in Southwestern Asia: Metallurgical production styles and social values during the Chalcolithic and Early Bronze Age." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/195816.
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The beginnings of metallurgical activity have intrigued scholars for decades. In this dissertation, I explore early metallurgical activity on the Iranian Plateau represented by the evidence at Tal-i Iblis in southern Iran, and Seh Gabi and Godin Tepe in central northern Iran. Together, these sites offer a diachronic view of metal production on the Plateau as well as a view of metallurgical activities practiced at different scales of production. The metallurgical materials from Tal-i Iblis are firmly dated to the late 6th to early 5th millennia BCE, and this corpus includes hundreds of crucible fragments excavated from multiple trash dumps. Seh Gabi and Godin Tepe offer a smaller range of production materials from the 4th through 2nd millennia BCE, but they also include a large collection of finished metal objects. These later materials differ in style and process from the Iblis debris.Thorough examination of these artifacts, combined with comparison to a series of carefully controlled casting experiments, has returned numerous significant results. The metallurgy of the Iranian Plateau does not fit the standard model of early metallurgical development. The Iblis crucibles do not reflect an early "experimental" stage in copper production. Rather, these artifacts represent a carefully controlled, production process with a narrow range of variability in both temperature and reducing atmosphere. Further, there is clear evidence for the preference of arsenical-copper alloys at Tal-i Iblis. These ancient craftspeople sought high-quality ores from a source (the Talmessi copper deposit) over 500 km from their production facility.Metallurgical production on the Iranian Plateau is also characterized by the long-term use of crucibles as the primary reaction vessel well into the 2nd millennium BCE. There are some production centers on the Iranian Plateau that see the use of furnaces during the 3rd millennium, but crucible use persists at many sites. At Godin Tepe--a site with significant evidence for contact with the Mesopotamian lowlands--variability in crucible form increases in later periods to include an Egyptian-style crucible during the 2nd millennium BCE. The presence of this crucible suggests that there was contact with foreign metallurgical processes, but the preference for small, portable reaction vessels persisted.
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Berard, Emilie. "L’armure du XIIIe au XVIIe siècle en Europe : une approche matérielle. Production, nature et circulation du métal." Thesis, Cergy-Pontoise, 2019. http://www.theses.fr/2019CERG0986.
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Ce projet s’intéresse à un objet particulier : l’armure. Celle-ci, dont la fonction première était de protéger le combattant, s’est adaptée entre le XIIIe et le XVIIe siècle aux bouleversements qu’ont connu les pratiques de guerre et l’organisation des armées dans cette période. L’armure pouvait aussi avoir une autre fonction, celle de distinguer socialement son porteur. Ainsi, à la fin du Moyen Âge l’armure est à la fois un objet de grande consommation et d’usage courant mais également un produit de luxe. Sa fabrication, dominée par différents centres de productions internationaux comme les villes Milan et Nuremberg, demandait un savoir-faire spécifique pour travailler et mettre en forme le métal.Dans le but d’éclairer d’une part les techniques et savoir-faire anciens, d’autre part la circulation et les échanges dans l’espace européen, ce projet aborde l’étude de l’armure par sa matérialité, en mettant en œuvre une approche archéométallurgique. Un corpus spécifique, de plus d’une centaine d’objets, caractéristique de l’évolution de l’équipement défensif des combattants mais également des grands centres de production européens a ainsi été constitué. L’analyse du métal a permis de déterminer la nature des matériaux employés ainsi que les techniques de fabrication de ces objets. L’étude des inclusions non métalliques a quant à elle permis de discuter de l’origine géographique du métal utilisé pour la fabrication des pièces.De façon générale, les résultats ont montré l’emploi d’alliages de natures variées, parfois très hétérogènes pour réaliser les plates d’armures. Néanmoins en moyenne le métal employé possède une dureté proche de celle d’un acier homogène à 0,4-0,5% de carbone. Les alliages trempés de dureté élevée demeurent très minoritaires dans le corpus étudié. Des spécificités ont néanmoins été relevées, comme l’utilisation d’un matériau spécifique, associant plusieurs feuilles de métal aux propriétés différentes qui pouvait offrir à l’armure de meilleures propriétés défensives. Les informations acquises ont également permis d’étudier les pratiques mises en œuvre par les armuriers que ce soit pour la fabrication d’une armure complète, la production massive de pièces en « série », ou issues d’un même atelier. Les résultats relatifs à la nature et au travail du métal nous ont ainsi amené à questionner le rôle du maitre armurier qui signait les objets et la signification de cette signature pour un atelierThe project focuses on a specific object: armor. Between the 13th and early 17th centuries, war practices have undergone major changes, both on the technological level, as well as the organizational one. Accordingly, defensives arms were adapted to the new needs in order to protect their owners. Armor was also in some cases a mark of social distinction. Thus, at the end of the Middle Ages, armor was both an object for everyday military use, massively produced, and a luxury attire. Its fabrication was dominated by several prestigious European centers of production like Milan and Nuremberg and required specific technical skills to shape the metal.In order to shed light on some of the techniques and ancient skills, along with the circulation and exchanges in the European space, this project addresses the study of armor through its materiality, by implementing an archeometallurgical approach. A specific corpus of over a hundred artefacts was collected, characteristic of the evolution of the defensive equipment of the fighters but also of the great European centers of production. Physicochemical analysis of the metal can decipher its nature and reveal the technical skills of the craftsmen. Non metallic phases analysis has allowed to test hypotheses on the provenance of the materials employed.Overall, the results showed the use of alloys of varying nature, sometimes highly heterogeneous, to realize the plates of armor. However, on average the metal employed has a hardness close to a homogeneous steel with 0.4-0.5% carbon. Hardened alloys of high hardness remain very minor in the studied corpus. Specificities were nevertheless noted, such as the use of a specific material, combining several sheets of metal with different properties that could offer better defensive properties. The information acquired also allowed to study the workshop practices implemented by the armorers, whether for the manufacture of a complete set of armor, the mass production of "serial" pieces, or those originating from the same workshop. The results relating to the nature and hammering of the metal have led us to question the exact nature of the intervention of the master armorer who signed the artefact and the significance of the signature of a workshop
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Godfrey, Evelyne. "The technology of ancient and medieval directly reduced phosphoric iron." Thesis, University of Bradford, 2007. http://hdl.handle.net/10454/5511.
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After carbon, phosphorus is the most commonly detected element in archaeological iron. The typical phosphoric iron range is 0.1wt% to 1wt%P. The predominant source of phosphorus in iron is the ore smelted. Around 60% of economic UK rock iron ore formations contain over 0.2%P. Under fully reducing conditions, both in liquid-state (cast iron) and solid-state bloomery smelting (direct reduction) processes, such rock ores would be predicted to produce phosphoric iron, and bog iron ores even more so. Ore-metal-slag phosphorus ratios for bloomery iron are derived here, by means of: laboratory experiments; full-scale experimental bloomery smelting; and analysis of remains from three Medieval and two Late Roman-Iron Age iron production sites in England and the Netherlands. Archaeological ore, slag, metal residues (gromps), and iron artefacts were analysed by metallography, SEM-EDS, EPMA, and XRD. The effects of forging and carburising on phosphoric iron were studied by experiment and artefact analysis. The ore to slag %P ratio for solid-state reduction was determined to range from 1:1.2 to 1: 1.8. The ore to metal %P ratio varied from 1:0.2 to 1:0.7-1.4, depending on furnace operating conditions. Archaeological phosphoric iron and steel microstructures resulting from non-equilibrium reduction, heat treatment, and mechanical processing are presented to define the technology of early phosphoric iron. Microstructures were identified by a combination of metallography and chemical analysis. The phosphoric iron artefacts examined appear to be fully functional objects, some cold-worked and carburised. Modern concepts of 'quality' and workability are shown to be inapplicable to the archaeological material.
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Genis, Evren Yigit. "Non-destructive X-ray Flourescence Analysis Of Early Bronze Age Metal Items From Kalinkaya-toptastepe: With Critical Remarks On The Formerly Applied Electrochemical Cleaning Procedure." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613467/index.pdf.
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This thesis focuses on late Early Bronze Age metal objects from funeral context from the site Kalinkaya-Toptastepe, dated to the late 4th and 3rd millennium BCE. The site yielded a large number of metal objects from EBA necropolis of the southern slope of Toptastepe, offering an ideal closed assemblage for an archaeometrical analysis to reveal the metalworking technologies of an early small rural community of Central Anatolia. First archaeometrical analysis applied on these objects, however, revealed unexpectedly high amounts of Zinc, which turned out to be not an intentional alloy, but modern contamination due to the electrochemical cleaning, carried out in the 1970s. A second analysis has carried out after cleaning the metal objects with micro-sandblasting technique, to remove the artificial Zn contamination. The accumulated data provided us with important insights into the metal consumption and alloying traditions of a late EBA village community in Central Anatolia, showing the earliest conscious alloys were being applied in small hamlets of the EBA as well. It has been apparent that any pre-Iron Age metal object, revealing Zn in its chemical composition can not be considered as early brass, but clearly a result of modern, ill-advised cleaning application.
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Blakelock, Eleanor S. "The Early Medieval Cutting Edge of Technology: An archaeometallurgical, technological and social study of the manufacture and use of Anglo-Saxon and Viking iron knives, and their contribution to the early medieval iron economy." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5517.
Full textAbstract:
A review of archaeometallurgical studies carried out in the 1980s and 1990s of early medieval (c. AD410-1100) iron knives revealed several patterns, with clear differences in knife manufacturing techniques present in rural cemeteries and later urban settlements. The main aim of this research is to investigate these patterns and to gain an overall understanding of the early medieval iron industry. This study has increased the number of knives analysed from a wide spectrum of sites across England, Scotland and Ireland. Knives were selected for analysis based on x-radiographs and contextual details. Sections were removed for more detailed archaeometallurgical analysis.
The analysis revealed a clear change through time, with a standardisation in manufacturing techniques in the 7th century and differences between the quality of urban and rural knives. Analysis of cemetery knives revealed that there was some correlation between the knife and the deceased. Comparison of knives from England, Dublin and Europe revealed that the Vikings had little direct impact on England¿s knife manufacturing industry, although there was a change in manufacturing methods in the 10th century towards the mass produced sandwich welded knife. This study also suggests that Irish blacksmiths in Dublin continued their ¿native¿ blacksmithing techniques after the Vikings arrived. Using the data gathered a chaîne opértoire of the iron knife was re-constructed, this revealed that there was a specific order to the manufacture process and decisions were not only influenced by the cost of raw materials, the skill of the blacksmith and the consumer status, but also by cultural stimulus.
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Blakelock, Eleanor Susan. "The early medieval cutting edge of technology : an archaeometallurgical, technological and social study of the manufacture and use of Anglo-Saxon and Viking iron knives, and their contribution to the early medieval iron economy." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5517.
Full textAbstract:
A review of archaeometallurgical studies carried out in the 1980s and 1990s of early medieval (c. AD410-1100) iron knives revealed several patterns, with clear differences in knife manufacturing techniques present in rural cemeteries and later urban settlements. The main aim of this research is to investigate these patterns and to gain an overall understanding of the early medieval iron industry. This study has increased the number of knives analysed from a wide spectrum of sites across England, Scotland and Ireland. Knives were selected for analysis based on X-radiographs and contextual details. Sections were removed for more detailed archaeometallurgical analysis. The analysis revealed a clear change through time, with a standardisation in manufacturing techniques in the 7th century and differences between the quality of urban and rural knives. Analysis of cemetery knives revealed that there was some correlation between the knife and the deceased. Comparison of knives from England, Dublin and Europe revealed that the Vikings had little direct impact on England's knife manufacturing industry, although there was a change in manufacturing methods in the 10th century towards the mass produced sandwich welded knife. This study also suggests that Irish blacksmiths in Dublin continued their 'native' blacksmithing techniques after the Vikings arrived. Using the data gathered a chaîne opértoire of the iron knife was re-constructed, this revealed that there was a specific order to the manufacture process and decisions were not only influenced by the cost of raw materials, the skill of the blacksmith and the consumer status, but also by cultural stimulus.
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Gustafsson, Ny Björn. "Casting Identities in Central Seclusion : Aspects of non-ferrous metalworking and society on Gotland in the Early Medieval Period." Doctoral thesis, Stockholms universitet, Institutionen för arkeologi och antikens kultur, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-95380.
Full textAbstract:
The aim of this thesis has been to investigate and interpret late Iron Ageand Early Medieval traces of non-ferrous metalworking on the islandGotland, Sweden. Gotland was not, based on the archaeological record, anintegrated part of the common Scandinavian culture. Instead a local,endemic cultural expression had developed; a seclusion which lasted forcenturies despite the islands central position in the Baltic Sea. In thepast, key elements for the understanding of local settlement- and burialpractices as well as the local material culture were mainly recovered andreported by local farmers. A specific category of such finds – so-called‘bronze slag’ is discussed and partly reinterpreted in the first study ofthis thesis. Two further studies treat different aspects of metalworkingand metalworkers – one discusses common archaeological notions ofScandinavian workshops, production sites and metalworkers from a criticalperspective while the other mainly focuses on the Gotlandic finds frommetal-detector surveys carried out over the last 35 years. Based on whereand to which extent, both from a quantitative and a qualitative point ofview, these finds occur a hierarchical classification into four sub groupsis presented – ordinary farm sites with traces of non-ferrous metalworking,workshop sites, potential workshop sites and last, extrovert harboursettlements. A fourth study presents an attempt to evaluate the usefulnessof magnetometry in delimiting extant traces of high-temperature crafts,such as metalworking. The last study of the thesis presents an attempt touse trace elements analysis of skeletal lead in human bone to identifypotential non-ferrous metalworkers. As the wearing of endemic Gotlandic jewellery appears to have been centralin the manifestation of the local identity it is argued that themetalworking artisans played a crucial role in defining how this identitywas signalled and displayed via the jewellery and dress-related metalobjects. It is further suggested that these artisans might have played animportant role in upholding the local economy before the advent of localminting.At the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 5: Manuscript.
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Heeb, Julia Maria. "Copper shaft-hole axes and early metallurgy in south-eastern Europe : an integrated approach." Thesis, University of Exeter, 2011. http://hdl.handle.net/10036/3636.
Full textAbstract:
Although the copper axes with central shaft-hole from south-eastern Europe have a long history of research, they have not been studied on a transnational basis since the 1960s. What has also been missing is an integrated or holistic approach, trying to use as many methods as possible and better understand the production, use and context of these enigmatic objects. This present research therefore approaches the axes from different angles. A database was compiled in order to find answers on questions such as the patterns of distribution, context, fragmentation and deformation of axes. For the distribution of axes in general as well as different attributes like fragmentation and typology, the content of the database was imported into GIS software and analysed. Aspects of production were considered through experimental archaeology, metallographic analysis and a re-discovered axe blank with missing shafthole. Especially the missing moulds make it difficult to fully understand the production sequence. The typology was re-evaluated and modified to ensure comparability across modern national boundaries. The context and background was developed through a thorough review of the literature and combined with theoretical considerations. The integration of all these approaches yielded some interesting results. The great variability in shape combined with the results of metallographic analyses clearly shows that a variety of production techniques were used, but it is as yet difficult to relate these to specific geographic areas or even cultural groups. In fact the typology as well as the practice of marking the axes indicate that traditional archaeological ‘cultures’ rarely correspond to the distribution of a type or to the practice of marking the axes. They show instead that there were different spheres of influence, some even more localised and others much larger (like the Carpathian Basin) than specific ceramic traditions. These different levels of belonging, as well as the increasing visibility of the individual in the archaeological record, show that it was a period of complex cultural patterns and interactions. The axes were a part of these networks of the daily life on many different levels from the strict utilitarian to the ritualised placement in burial contexts.
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Troncoso, Lucas de Paula Souza. "Um estudo arqueometalúrgico dos artefatos resgatados do Arraial de São Francisco Xavier da Chapada." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/71/71131/tde-16052013-122630/.
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Este trabalho tem por objetivo apresentar as possibilidades que a arqueometalurgia coloca à disposição da arqueologia, inseridas em uma série de métodos que, diante do estudo de uma variada amostra de materiais, permitem a aproximação do conhecimento das diversas facetas implicadas na compreensão da atividade metalúrgica e o desenvolvimento de interpretações sobre o papel e o significado do metal na sociedade e na economia das comunidades do passado. De acordo com esta abordagem interdisciplinar, o presente trabalho apoia-se no estudo de objetos metálicos encontrados no Arraial de São Francisco Xavier da Chapada, sítio arqueológico localizado no Mato Grosso, inserido no contexto da mineração colonial do século XVIII e, formado, quase que em sua totalidade, por escravos. Aprofundando uma visão direcionada ao estudo arqueometalúrgico do acervo resgatado, através de procedimentos de análise metalográfica, técnica bastante útil para a caracterização de estruturas metálicas, este trabalho busca identificar aspectos ligados à matéria-prima usada no processo de confecção, detalhes das técnicas de produção dos artefatos metálicos estudados e características estruturais dos mesmos, na tentativa de estabelecer inferências sobre o cotidiano local, a relação da metalurgia com a escravidão, o sistema de abastecimento de mercadorias e seus diálogos com o Império Português.This study aims to present the possibilities that archaeometallurgy can provide to archeology, entered into a series of methods that, on the study of a diverse sample of materials, allow the approximation of knowledge of the various facets involved in understanding metallurgical activity and developing interpretations of the role and significance of metals in the society and economy of the communities of the past. According to this interdisciplinary approach, this work relies on the study of metal objects found in the Arraial de São Francisco Xavier da Chapada, archaeological site located in Mato Grosso, placed in the context of eighteenth-century colonial mining and formed almost in its entirety, by slaves. Deepening a vision directed to the study of the archaeometallurgical collection rescued, through metallographic analysis procedures, useful technique for the characterization of metal structures, this study seeks to identify aspects of raw material used in the process of confection, details of the production techniques of the metallic artifacts studied and its structural characteristics, in an attempt to make inferences about the everyday place, metallurgy relationship with slavery, the system of supply of goods and its dialogues with the Portuguese Empire.
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Ercanli, Levent. "The Examimnation Of Metal Working Technology In Kultepe In Assyrian Trade Colonies Period." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614269/index.pdf.
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Metal played important role in the social and economic development of societies since its discovery. It is so important that the some part of humankind historical development were designated by the type of metal which was extensively used depending upon the level of technology of that period enabling the processing of metal like bronze age and iron age.
In this frame, the rich metal deposits of Anatolia made this region a very important metal working and civilization center.
Kültepe where it was the center of the trade organization in Anatolia realized between Assur and Anatolia during 1945-1730 B.C called Assyrian Trade Colonies Period was one of the most important metal working center of Anatolia at that period. In this thesis, it is aimed to make a contribution to understand the metal working technology in Kü
ltepe by examining the uncovered metal artifacts dated to that period. For this purpose, the metal artifacts uncovered from Kü
ltepe Ancient Site belonging to Colonies Period which are exhibited in the Anatolian Civilization Museum were examined by portable XRF (PXRF) to obtain the quantity of elements that constituted the artifacts without giving any harm to the artifact. Besides the examination of exhibited artifacts in the Anatolian Civilization Museum, the uncovered metal artifact parts belonging to Colonies Period which are not suitable for exhibition and separated for studying were examined by energy dispersive X-ray unit of scanning electron microscope for elemental analysis and by X-ray diffraction for the analysis of minerals. The microstructures of artifacts were examined by scanning electron microscope and optical microscope for revealing the operations on metal applied by ancient metalsmith. In addition to analysis mentioned above, in order to make a contribution to understand the copper trade between Kü
ltepe and its environs lead isotope analysis of some samples from the separated metal artifacts for studying was also performed. As a result of all those analyses, it was concluded that Kü
ltepe ancient metalsmiths in Colonies Period had the knowledge to smelt the copper and to pour molten metal into a mold to produce an object of desired shape. Moreover, they also discovered that the addition of some elements to copper hardens the structure. In this frame the bronze to be obtained by deliberately adding of tin to copper was attained. In addition, they were aware of shaping the casted object by hammering. In the meantime, they had the knowledge of heat treatment that allows them forging the object many times till giving the desired shape without causing the fracture in the structure.
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Disser, Alexandre. "Production et circulation du Fer en Lorraine (VIe siècle avant J-C - XVe siècle ap. J-C)." Thesis, Belfort-Montbéliard, 2014. http://www.theses.fr/2014BELF0242/document.
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L’espace lorrain a connu, au cours des XIXe et XXe s., une intense activité sidérurgique reposant sur la réduction d’un minerai sédimentaire, la Minette lorraine. Paradoxalement, on a longtemps considéré qu’aucune activité de production liée à l’exploitation de ce minerai n’avait pris place dans cette région avant l’époque contemporaine. Un programme de recherche initié il y a 25 ans a par ailleurs totalement renouvelé la perception de l’histoire sidérurgique de cet espace. Les activités de production s’y sont déroulées de manière sporadique dès les âges du Fer, avant de prendre de l’ampleur au cours de la période médiévale. Les recherches menées permettent une première appréhension de l’évolution des modes de production du fer en Lorraine à différentes époques, mises en perspective dans leur contexte européen. Toutefois, les modalités de distribution du métal produit restent largement méconnues, du fait de l’indigence relative des sources historiques à cet égard. Une première perception des circuits de distribution du fer se développant au sein de l’espace lorrain est exposée dans ce mémoire, contribuant à l’appréhension des usages du fer à différentes époques.Une méthodologie développée récemment par le Laboratoire Métallurgies et Cultures et le Laboratoire Archéomatériaux et Prévision de l’Altération, reposant sur la caractérisation chimique des déchets associés à la réduction du minerai et des inclusions présentes dans les produits sidérurgiques, a été employée dans ce but. Ce travail interdisciplinaire propose par ailleurs de nouveaux développements en termes de traitement statistique multivarié de l’information chimique, contribuant ainsi à répondre aux problématiques développées.Un référentiel géochimique, constitué d’une base de données préexistante et d’informations nouvelles acquises à l’occasion de prospections archéologiques, offre une perception nouvelle de la diversité chimique caractérisant les activités sidérurgiques anciennes au sein de l’espace lorrain et de ses marges. Des ensembles géochimiques de production ont ainsi été mis en évidence. Plusieurs contextes de consommation ont ensuite été considérés, offrant un éclairage sur les circuits de distribution du fer aux époques anciennes en Lorraine. Une démarche statistique, reposant sur l’emploi d’analyses descriptives et de modèles prédictifs, a été appliquée en ce sens, après avoir été éprouvée par l’étude d’ateliers sidérurgiques pour lesquels l’utilisation d’un minerai en particulier est assurée par le contexte archéologique.Les résultats obtenus permettent de préciser, parfois à l’encontre des hypothèses formulées au préalable, les pratiques d’échange du fer à différentes époques, en regard de nos connaissances quant aux modes de production sidérurgiques. Des discussions portant sur le rôle joué par le travail du fer au sein des sociétés anciennes sont initiées à la lumière des informations nouvellement acquisesLorraine was, during the 19th and 20th c., one of the most important ironmaking areas worldwide, relying on the use of a sedimentary ore, the Minette lorraine. Paradoxically, it has long been thought that no iron was produced using this ore before the modern era. A research program initiated 25 years ago totally renewed our perception of its metallurgical history. Production activities were indeed sporadically performed since the Iron Age, before drastically increasing during medieval times. Research performed allows a first apprehension of the ironmaking activities’ forms in Lorraine and their evolution through successive periods, put into perspective in the European context. Iron trade and circulation remain however largely unknown, due to the lack of historical sources. A first insight of the trade networks relative to iron products extending throughout Lorraine and its fringes is exposed in this thesis, contributing to the perception of the use of iron in different periods.A methodology recently developed by the Laboratoire Métallurgies et Cultures and Laboratoire Archéomatériaux et Prévision de l’Altération, relying on the chemical characterization of smelting slags and slag inclusions entrapped in iron products, was employed to that purpose. This interdisciplinary work also offers new developments in the multivariate statistical treatment of chemical information, and contributes to answering the issues raised at the beginning of this work.A geochemical reference set, comprised of a pre-existing database and new information gathered on archaeological surveys performed during this work, was set up. It provides a new perception of the chemical diversity characterizing iron smelting activities within Lorraine and its fringes. Geochemical production sets were emphasized in doing so. Several iron consumption contexts were then considered, offering the possibility of shedding light on iron spreading networks during ancient times in Lorraine. A statistical approach, relying on the use of both descriptive statistical analyses and predictive modelling, was applied to that purpose. It was beforehand tested by studies performed on workshops for which the use of a given ore is attested by archaeological records.Results allow enlightening, sometimes against formerly formulated hypotheses, the practices in terms of the iron’s trade through different periods, facing our current knowledge about iron production modes. Benefiting from newly gathered information, discussions about the role played by ironworking activities among ancient societies are initiated
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Oberrauch, Hanns. "Alle origini del rogo votivo e della metallurgia alpina Il culto del fuoco nell’Età del Rame nel caso del Pigloner Kopf." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/322594.
Full textAbstract:
The archaeological site Pigloner Kopf (Vadena/Pfatten, South Tyrol, Italy) has revealed unexpected elements related to the local Bell Beaker culture, like the local production of shaft-hole axes, typologically linked to the Balkans and the Danube region. The site also shows the oldest evidence of ritual burnt offerings in the Eastern Alps. The mostly burnt animal bones, cereals, flint tools and fragments of pottery could be interpreted as the remains of a rock sanctuary with burnt offerings. The site can be considered as a prototype of the alpine places of worship and mountain sanctuaries. These burning rituals were practised from the beginning of the Bronze Age until the late Roman Empire. The aim of the paper is to present the results of the study of materials and their analyses, focussing on the metallurgical industry, composed mostly by objects produced with local copper, like 10 miniaturised shaft-hole axes, 7 awls and a pin and also by imported objects like a dagger blade and spiral ornaments. The deposition of copper tools in hoards in association with burnt offerings suggest a ritual interpretation of the site, dated to the late Copper Age with Bell Beaker elements in lithics and pottery.
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Mamani-Calcina, Elmer Antonio. "Microanálise de inclusões não-metálicas de artefatos ferrosos: investigação da assinatura química de procedência (Real Fábrica de Ferro São João de Ipanema, Sítio de Afonso Sardinha, Sítio de Missões e Mossend Iron Works) por análise hierárquica de conglomerados." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-18012017-151954/.
Full textAbstract:
Técnicas de caracterização microestrutural, incluindo microanálise química EDS (energy dispersive spectrometry), foram usadas para investigar as inclusões não-metálicas de amostras ferrosas da Real Fábrica de Ferro São João de Ipanema (Sorocaba, século XIX), da Ponte D. Pedro II (Bahia, produzida na Escócia, Mossend Iron Works, século XIX) e dos sítios arqueológicos de São Miguel das Missões (Rio Grande do Sul, século XVII) e de Afonso Sardinha (Sorocaba, século XVI). Estes resultados foram analisados por métodos estatísticos com o objetivo de estabelecer a assinatura química de cada uma das quatro procedências testadas. A análise dos gráficos bivariantes dos resultados de microanálise de inclusões \"globais\" (% SiO2 versus %Al2O3; %CaO versus %K2O; %MgO versus %Al2O3 e % SiO2 versus %FeO) não permitiu separar os resultados em agrupamentos significativos com relação à procedência das amostras. Os resultados de microanálise da correlação dos teores de %TiO2 e %V2O5 presentes na fase wüstita da microestrutura das inclusões de escória mostraram, no entanto, um agrupamento significativo para os resultados dos artefatos ferrosos de Bahia e de Missões, mas não permitiram separar os resultados dos artefatos de Ipanema e de Sardinha. Deste modo, foi usada a análise hierárquica de conglomerados dos resultados de microanálise das inclusões \"globais\" e de seus microconstituintes (fase wüstita e \"matriz\") com o objetivo de separar os resultados em quatro grupos coincidentes com as quatro procedências investigadas. Somente a análise hierárquica de conglomerados usando os teores de %MgO, %TiO2, %V2O5, %MnO e %Al2O3 presentes na fase wüstita permitiu separar com sucesso os quatro grupos de resultados. Finalmente, a baixa fração volumétrica de inclusões de escória das amostras de Ipanema (~1% contra uma média de 4% das demais amostras) indica a existência de certo grau de domínio tecnológico dos processos produtivos da Real Fábrica de Ferro São João de Ipanema.Microstructural characterization techniques, including EDX (Energy Dispersive X-ray Analysis) microanalyses, were used to investigate the slag inclusions of the microstructure of ferrous artifacts of the Royal Iron Factory of São João de Ipanema (first steel plant of Brazil, XIX century), the D. Pedro II Bridge (located in Bahia, assembled in XIX century and produced in Scotland) and the archaeological sites of São Miguel de Missões (Rio Grande do Sul, Brazil, production site of iron artifacts, the XVIII century) and Afonso Sardinha (São Paulo, Brazil production site of iron artifacts, XVI century). The microanalyses results were analyzed by a hierarchical cluster analysis and the dendrogram with the microanalyses results of the wustite phase (using as critical variables the contents of MnO, MgO, Al2O3, V2O5 and TiO2) allowed the identification of four clusters, which successfully represented the samples of the four production sites (Ipanema, Sardinha, Missões and Bahia). The comparatively low volumetric fraction of slag inclusions in the samples of Ipanema (~1% whit an average of 4% others samples) indicated the existence of some degree of proficiency in the ironmaking processing of the Royal Iron Factory of São João de Ipanema.
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Salvà, Simonet Bartomeu. "Arqueometal•lúrgia com a reflex de l’estratificació social a les Illes Balears." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/133597.
Full textAbstract:
Aquesta tesi es basa en una llarga experiència en diversos projectes i excavacions portats a terme a les Illes Balears, però sobre tot en el de l’excavació dels Closos de Can Gaià a Felanitx, que he codirigit juntament amb altres investigadors. La formació en arqueometal•lúrgia s’ha realitzat al Museo Arqueològico Nacional i en el CSIC Secció Arqueologia de Madrid, en l’època que es trobava en el mateix espai físic que el Museo Arqueológico.
Els materials estudiats procedeixen de molts diversos indrets i jaciments de les Balears, en la majoria dels casos d’excavacions antigues o de troballes casuals, que a l’actualitat es troben a diversos museus insulars. Així i tot, l’antiguitat de les excavacions i el deficient registre arqueològic de la majoria dels casos, ha estat suplert, en part, per les abundants informacions de moltes de les troballes i de l’acurat registre d’algunes campanyes a jaciments excavats a la segona meitat del segle XX, com és el cas de son Matge a Mallorca, o son Mercer de Baix a Menorca. Aquests últims citats, i alguns més han permès cimentar un ancoratge cronològic i de disposició micro i semimicroespacial, sense els quals la present feina hagués estat impossible. També s’han afegit els estudis encara més recents, que han estat cabdals per desenvolupar aspectes fonamentals, com és el cas de l’explotació de mineral local durant la prehistòria.
Pel que fa a la possibilitat de contextualitzar aquests metalls i el seu ús, s’han incorporat els coneixements adquirits els últims anys, a partir fonamentalment de la segona meitat de la dècada dels anys 90 del segle XX. El punt de partida primordial per l’estudi de les societats de l’Edat del Bronze es fonamentà en un estudi desenvolupat per l’autor, juntament al Dr. Manel Calvo (Calvo i Salvà, 1997).
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Vincent, Brice. "Samrit. Étude de la métallurgie du bronze dans le Cambodge angkorien (fin du XIe – début du XIIIe siècle)." Thesis, Paris 3, 2012. http://www.theses.fr/2012PA030032.
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Active pendant près d’un millénaire, la métallurgie du bronze khmère se distingue par une remarquable continuité et par la production aussi bien d’images sacrées que d’objets les plus divers et le plus souvent cultuels. Cette tradition métallurgique sera appréhendée dans le cadre de notre thèse à travers l’analyse d’une période de production spécifique comprise entre la fin du XIe et le début du XIIIe siècle, celle-ci ayant l’intérêt d’avoir fourni la plupart des vestiges en bronze jusqu’ici conservés. Sans négliger les approches "classiques" généralement retenues pour étudier les bronzes khmers, ce travail aura pour principal objectif de caractériser les savoir-faire techniques alors maîtrisés par les bronziers angkoriens. Après un nécessaire ancrage historique au sein d’un royaume khmer dominé par la dynastie de Mahīdharapura et par plusieurs grands centres politico-religieux dont Yaśodharapura / Angkor, la production étudiée sera présentée dans ses grandes lignes sous deux angles complémentaires, typologique et fonctionnel. L’épigraphie khmère sera ensuite sollicitée afin de fournir des premiers éléments quant aux pratiques et aux savoirs métallurgiques attestés au cours de l’époque angkorienne, à la fois pour le bronze, ou saṃrit en vieux khmer, et pour d’autres métaux. Un corpus raisonné de 167 statues et objets en bronze, issus de plusieurs collections muséales et soumis à diverses techniques d’examen et d’analyse, aidera enfin à reconstruire les séquences de travail de la chaîne opératoire présidant à la réalisation d’un bronze. Parmi celles-ci, les pratiques de fonte, bien documentées grâce aux résultats apportés par de récentes analyses élémentaires, feront l’objet d’un développement particulierActive for almost a millennium, Khmer bronze metallurgy is characterized by a remarkable continuity and by the production of sacred images as well as of objects of the most varied kind, but usually for ritual practices. This metallurgical tradition will be considered in the framework of our thesis through the analysis of a specific period of production that lies between the late eleventh and early thirteenth century, the latter having the advantage of providing the most numerous bronze remains conserved thus far. Without neglecting the "classical" approaches generally used to study Khmer bronzes, this work will serve primarily to characterize the technical know-how then mastered by Angkorian bronze craftsmen. After a necessary anchorage in history in a Khmer kingdom dominated by the Mahīdharapura dynasty and several major political and religious centers including Yaśodharapura / Angkor, the studied production will be presented in two complementary perspectives, typological and functional. Khmer epigraphy will then be solicited to provide the first elements on metallurgical knowledge and practices attested during the Angkorian period, both for bronze, or saṃrit in Old Khmer, as well as for other metals. An annotated corpus of 167 images and objects in bronze, from several museum collections and subject to various technical examinations and analyses, will finally aid in rebuilding the workflows of the chaîne opératoire governing the production of a bronze. Among these, foundry practices, well-documented by the results provided by recent elemental analyses, will be the object of deeper study
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Goy, Julie. "La métallurgie du cuivre à l'âge du Fer en péninsule d'Oman : organisations et caractéristiques techniques." Thesis, Paris 1, 2019. http://www.theses.fr/2019PA01H063.
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La péninsule d’Oman est une entité géo-culturelle qui s’organise autour des montagnes d’al-Hajjar, extrêmement riches en minerais de cuivre. Ce dernier a probablement été exploité dès la période Hafit (3000 - 2500 av.n.è.) et le métal produit deviendra une matière d’échange avec la Mésopotamie à la période Umm an-Nar (2500 - 1900 av.n.è.). À l’âge du Fer (1350 - 300 av.n.è.), ces échanges deviennent plus flous, mais la production de cuivre elle, ne diminue pas. Les sites de réduction et de travail du métal de la péninsule d’Oman sont extrêmement massifs et fonctionnent à l’aide d’une gestion et d’une organisation complexes. De plus, ce métal ne connaît pas de concurrence, le fer n’ayant été produit qu’à partir de la fin de l’âge du Fer et le bronze étant relativement peu représenté au sein du corpus métallique. Notre étude a tenté d’identifier les procédés mis en place par les métallurgistes grâce à une méthodologie croisant prospections archéo-métallurgiques et analyses physico-chimiques des vestiges de la production (scories, lingots et objets finis). Ces objets ont été retrouvés dans des contextes d’habitats, de caches ou d’ateliers métallurgiques, il s’agit principalement d’armes, de bracelets, de bols et de figurines de serpent, animal auquel les populations locales semblaient vouer un culte exclusif. Les analyses chimiques attestent une fabrication locale, à partir d’un minerai issu des montagnes d’al-Hajjar. Cependant, il apparaît que la pratique du recyclage d’objets contribue activement à l’approvisionnement des populations en cuivre. Le métal obtenu est chimiquement très mélangé et semble avoir été utilisé dans la fabrication de beaucoup d’objets, sans distinction de type ou d’usage. Malgré l’absence d’un système d’écriture connu, les populations de l’âge du Fer livrent des vestiges archéologiques qui attestent d’une organisation sociale complexe, au sein de laquelle le cuivre semble avoir joué un rôle important, en contribuant au maintien d’une identité locale forteThe Oman Peninsula is a geo-cultural entity organized around the al-Hajjar mountains, which are extremely rich in copper ores. This metal was probably exploited since the Hafit period (3000 - 2500 BC) and the metal produced will become a trading material with Mesopotamia during the Umm an-Nar period (2500 - 1900 BC). During the Iron Age (1350 - 300 B.C.), these exchanges became more blurred, but copper production did not decrease. The reduction and metalworking sites of the Oman Peninsula are extremely massive and operate with complex management and organization. Moreover, this metal is not competitive, as iron was only produced at the end of the Iron Age and bronze is relatively under-represented in the metallic corpus. Our study attempted to identify the processes implemented by metallurgists using a methodology that combines archaeometallurgical prospecting and physico-chemical analysis of production remains (slag, ingots and finished objects). These objects were found in various contexts : settlements, hiding places or metallurgical workshops. They are mainly weapons, bracelets, bowls and snake figurines, an animal to which the local populations seemed to devote an exclusive cult. Chemical analysis attest a local production, using ore from the al-Hajjar mountains. However, it appears that the practice of recycling objects actively contributes to the supply of copper to the population. The resulting metal is chemically highly mixed and appears to have been used in the manufacture of many objects, regardless of type or use. Despite the absence of a writing system, archaeological remains of the Iron Age populations attest to a complex social organization, in which copper seems to have played an important role, contributing to the development of a strong local identity
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Pappas, Adlerburg Nickolas T. "To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars." Thesis, Stockholms universitet, Arkeologiska forskningslaboratoriet, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-144383.
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This thesis aims to provide adequate analytical information on the spade shaped iron bars of Norrland and central Sweden. While their significance has been thoroughly debated for decades, analytical research on them has been confined to cases of single artefacts or theoretical interpretations of their value, meaning and origin. In this study a comprehensive approach is taken into consideration. Based on X-Ray fluorescence (XRF), scanning electron microscopy (SEM) and metallographical analysis this thesis seeks to facilitate new interpretations on quality, production centres and usage based on analytical results. Aiming to settle some of the long lasting questions regarding the artefacts while producing results which can further the discussion by raising new questions, previously unasked.
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Pappas, Adlreburg Nickolas. "To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars." Thesis, Stockholms universitet, Arkeologiska forskningslaboratoriet, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-145694.
Full textAbstract:
This thesis aims to provide adequate analytical information on the spade shaped iron bars of Norrland and central Sweden. While their significance has been thoroughly debated for decades, analytical research on them has been confined to cases of single artefacts or theoretical interpretations of their value, meaning and origin. In this study a comprehensive approach is taken into consideration. Based on X-Ray fluorescence (XRF), scanning electron microscopy (SEM) and metallographical analysis this thesis seeks to facilitate new interpretations on quality, production centres and usage based on analytical results. Aiming to settle some of the long lasting questions regarding the artefacts while producing results which can further the discussion by raising new questions, previously unasked.
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Kyek, Andreas [Verfasser]. "Non-destructive Mössbauer spectroscopy in archaeometallurgy / Andreas Kyek." 2000. http://d-nb.info/959786333/34.
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Loureiro, Joana Gonzalez. "Archaeometallurgical study of the Proto-historic collection of Moinhos de Golas (North Portugal): a forecast for technological changes?" Master's thesis, 2014. http://hdl.handle.net/10362/14381.
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This work presents the archaeometallurgical study of a group of metallic artefacts found in Moinhos de Golas site, Vila Real (North of Portugal), that can generically be attributed to Proto-history (1st millennium BC, Late Bronze Age and Iron Age).
The collection is composed by 35 objects: weapons, ornaments and tools, and others of difficult classification, as rings, bars and one small thin bent sheet. Some of the objects can typologically be attributed to Late Bronze Age, others are of more difficult specific attribution.
The archaeometallurgical study involved x-ray digital radiography, elemental analysis by micro-energy dispersive X-ray fluorescence spectrometry and scanning electron microscopy with energy dispersive spectroscopy, microstructural observations by optical microscopy and scanning electron microscopy. The radiographic images revealed structural heterogeneities frequently related with the degradation of some artefacts and the elemental analysis showed that the majority of the artefacts was produced in a binary bronze alloy (Cu-Sn) (73%), being others produced in copper (15%) and three artefacts in brass (Cu-Zn(-Sn-Pb)). Among each type of alloy there’s certain variability in the composition and in the type of inclusions. The microstructural observations revealed that the majority of the artefacts suffered cycles of thermo-mechanical processing after casting.
The diversity of metals/alloys identified was a discovery of great interest, specifically due to the presence of brasses. Their presence can be interpreted as importations related to the circulation of exogenous products during the Proto-history and/or to the deposition of materials during different moments at the site, from the transition of Late Bronze Age/Early Iron Age (Orientalizing period) onwards, as during the Roman period.
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Vidigal, Rosa Orestes Cerdeira. "The early metallurgy in Southwestern Iberia: metals from the Chalcolithic Settlement of São Pedro (Redondo)." Master's thesis, 2015. http://hdl.handle.net/10362/16440.
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Archaeological excavations carried out in the archaeological site of São Pedro (Southern Portugal) revealed a Chalcolithic settlement occupied in different moments of the 3rd millennium BC. The material culture recovered includes different types of materials, such as ceramics, lithics and metals. The later comprises about 30 artefacts with different typologies such as tools (e.g. awls, chisels and a saw) and weapons (e.g. daggers and arrowheads) mostly belonging to the 2nd and 3rd quarter of the 3rd millennium BC.
In the present work the collection of chalcolithic metallic artefacts recovered in São
Pedro was characterized. Analytical studies involved micro energy dispersive X-ray fluorescence spectrometry (micro-EDXRF) to determine elemental composition, together with optical microscopy and Vickers microhardness testing for microstructural characterisation and hardness determination.
Main results show copper with variable amounts of arsenic and very low content of
other impurities, such as iron. Moreover, nearly half of the collection is composed by
arsenical copper alloys (As > 2 wt.%) and an association was found between arsenic content and typology since the weapons group (mostly daggers) present higher values than tools (mostly awls). These results suggest some criteria in the selection of arsenic-rich copper ores or smelting products. Furthermore, after casting an artefact would have been hammered, annealed and sometimes, finished with a hammering operation. Additionally, microstructural variations in this collection reveal somewhat different operational conditions during casting, annealing and forging, as expected in such a primitive metallurgy.
Moreover the operational sequence seems to be used to achieve the required shape to the object, rather than to intentionally make the alloy harder.
Overall, this study suggests that Chalcolithic metallurgists might have a poor control
of the addition of arsenic and/or were unable to use this element to increase the hardness of tools and weapons.
Finally, the compositions, manufacturing processes and hardness were compared to
those from neighbouring regions and different chronological periods.
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Pryce, Thomas. "Prehistoric copper production and technological reproduction in the Khao Wong Prachan Valley of central Thailand." Phd thesis, 2009. http://tel.archives-ouvertes.fr/tel-00601676.
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Employing a technological approach derived from the 'Anthropology of Technology' theoretical literature, this thesis concerns the identifi cation and explanation of change in prehistoric extractive metallurgical behaviour in the Khao Wong Prachan Valley of central Thailand. The 'Valley' metallurgical complex, amongst the largest in Eurasia, constitutes Southeast Asia's only documented industrial-scale copper-smelting evidence. The two smelting sites investigated, Non Pa Wai and Nil Kham Haeng, provide an interrupted but analytically useful sequence of metallurgical consumption and production evidence spanning c. 1450 BCE to c. 300 CE. The enormous quantity of industrial waste at these sites suggests they were probably major copper supply nodes within ancient Southeast Asian metal exchange networks. Excavated samples of mineral, technical ceramic, and slag from Non Pa Wai and Nil Kham Haeng were analysed in hand specimen, microstructurally by refl ected-light microscopy and scanning electron microscopy (SEM), and chemically by polarising energy dispersive x-ray fl uorescence spectrometry ([P]ED-XRF) and scanning electron microscopy with energy dispersive x-ray fl uorescence spectrometry (SEM-EDS). Resulting analytical data were used to generate detailed technological reconstructions of copper smelting behaviour at the two sites, which were refi ned by a programme of fi eld experimentation. Results indicate a long-term improvement in the technical profi ciency of Valley metalworkers, accompanied by an increase in the human effort of copper production. This shift in local 'metallurgical ethos' is interpreted as a response to rising regional demand for copper in late prehistory.
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Odler, Martin. "Společenský kontext mědi ve starověkém Egyptě do konce Střední říše." Doctoral thesis, 2020. http://www.nusl.cz/ntk/nusl-434783.
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1 Odler, Martin 2020: The social context of copper in Ancient Egypt down to the end of Middle Kingdom. PhD thesis. Prague: Charles University, Faculty of Arts. Supervisor: Prof. Mgr. Miroslav Bárta, Dr. Abstract The subject of the doctoral thesis is a reconstruction of the chaîne opératoire of copper in ancient Egypt from its earliest occurrence in the fourth millennium BC until the end of the Middle Kingdom. As copper was the metal most widely used in ancient Egyptian society, its study can offer statistical "big data" otherwise rarely available for ancient cultures. Three large groups of sources are discussed successively: written and iconographic sources, archaeological sources (material culture, i.e. artefacts), and archaeometallurgical sources, divided into several consecutive stages of the chaîne opératoire. Copper was named bjA and read [byr] in the periods under study, while an interpretation as arsenical copper with a low and high content of arsenic, respectively, is proposed for so- called Asian copper and Hsmn. In the Middle Kingdom, the term Hsmn begun to be used also for tin bronze. The word for crucible was bD(.t) and the word for metalworker (incorporating both metallurgists and smiths) was bD.ty. There is no substantial Egyptian evidence from the periods under study for the current...