Littérature scientifique sur le sujet « Ceramica industriale »
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Articles de revues sur le sujet "Ceramica industriale"
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Albarella, Umberto, Valeria Ceglia et Paul Roberts. « S. Giacomo degli Schiavoni (Molise) : an early fifth century AD deposit of pottery and animal bones from central Adriatic Italy ». Papers of the British School at Rome 61 (novembre 1993) : 157–230. http://dx.doi.org/10.1017/s0068246200009971.
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S. GIACOMO DEGLI SCHIAVONI (MOLISE): UN DEPOSITO DI CERAMICA E OSSA ANIMALI DELL'INIZIO DEL V SECOLO d.C.—ADRIATICO CENTRALE, ITALIAGli scavi recentemente effettuati presso S. Giacomo degli Schiavoni (CB) hanno portato alla luce un complesso di carattere industriale, con zone lavorative, magazzini ed un sistema idraulico di pozzi, contenitori e fogne, centrato su di una cisterna.Il riempimento di questa cisterna conteneva una grande quantità di ceramica (400 vasi circa), databile agli anni 420–440 sulla base della terra sigillata chiara africana e focese ivi rinvenuta. Inoltre erano presenti anfore da trasporto dell'Africa e del Mediterraneo orientale, lucerne di produzione locale e molta ceramica dipinta e comune (anche quest'ultima, in parte, inportata dal Mediterraneo orientale).La presenza di scarti di fornace di ceramica dipinta e comune e l'alta percentuale di ceramica importata suggeriscono che il sito avesse un ruolo economico abbastanza importante durante il tardo impero. La qualità delle importazioni dal Mediterraneo orientale suggerisce la presenza di un sistema economico apparentemente diverso da quello dell'Italia tirrenica.Lo scavo della cisterna ha messo in luce anche un piccolo campione faunistico di estremo interesse.La relativamente ampia varietà di specie, la inusuale (per questo periodo) predominanza degli ovicaprini sui suini e la presenza di una scapola di cammello (o dromedario) sembrano rappresentare gli elementi di maggiore interesse di questa fauna.Interessante è anche la presenza di ossa di equidi (sia cavallo che asino) il cui ipotetico utilizzo come animali da trasporto fa supporre che il sito avesse un ruolo in un sistema economico di più ampia scala, nel cui ambito anche la presenza del cammello potrebbe essere interpretata.Seppure l'incompleto recupero del materiale (dovuto ad assenza di setacciatura) e la piccolezza del campione invitino alla cautela, sembra lecito ipotizzare la presenza di un sito dalle molteplici attività economiche: allevamento (probabilmente per carne, latte e lana), agricoltura, caccia, commercio.
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Di Taranto, Enrico. « Il co-branding nell'industria alberghiera : un caso di studio ». ECONOMIA E DIRITTO DEL TERZIARIO, no 2 (décembre 2010) : 247–63. http://dx.doi.org/10.3280/ed2010-002003.
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Il presente lavoro si colloca all'interno del filone di studi che approfondisce le potenzialitŕ e i rischi degli accordi di co-branding nel settore turistico-alberghiero. La formazione di tali accordi č generalmente finalizzata ad allargare il raggio d'azione delle marche coinvolte, ad incrementarne la reputazione al fine di entrare in nuovi mercati, comprendere e presidiare nuove frontiere tecnologiche, ridurre i costi attraverso le economie di scala e/o di condivisione nonché rinnovare l'immagine aziendale (Collesei e Checchinato, 2007; Busacca e Bertoli, 2006). Se fino ad anni relativamente recenti tali accordi hanno riguardato soprattutto le relazioni di tipo verticale e orizzontale, negli ultimi tempi sono andati invece acquisendo rilevanza gli accordi di tipo laterale, in cui la relazione per la condivisione della marca s'instaura fra imprese che operano in settori merceologici differenti: i partner sono cioč aziende che, pur collaborando in alcune attivitŕ, mantengono la propria vocazione a competere in ambiti distinti (Bertoli, 1995; Della Corte e Sciarelli, 2003). In particolare, obiettivo del lavoro sarŕ quello di presentare una iniziativa di cobranding laterale sviluppata da due imprese di grande tradizione e operanti in settori differenziati: l'Hotel "Il San Pietro" di Positano - tra gli alberghi piů prestigiosi al mondo - e la Ceramica Stingo - antica manifattura di maioliche artistiche protagonista del panorama proto-industriale dell'area napoletana. Due imprese, dunque, lontane per settore di attivitŕ, ma vicine per allure, tradizione e qualitŕ, hanno dato vita ad una efficace simbiosi che testimonia come marchi di eccellenza possano interagire, potenziarsi a vicenda e, per quanto riguarda il settore turistico, rappresentare un peculiare fattore di attrattivitŕ di cui l'impresa ricettiva deve dotarsi per posizionarsi in una situazione di vantaggio rispetto ai concorrenti.
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Di, Yong Jiang, Bi Jia et Jun Wang. « Synthesis and Microstructure of Porous Ceramics Made from Industrial Solid Residues ». Key Engineering Materials 602-603 (mars 2014) : 179–83. http://dx.doi.org/10.4028/www.scientific.net/kem.602-603.179.
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Industrial solid residues and poor quality clay as main raw material were used to prepare porous ceramic balls by ceramics process with coal and wood powder as pore-forming additive to improve the porosity of the ceramics ball. Effect of pore-forming additive on the properties of ceramic ball was investigated. The phase composition and section morphology of the ceramics balls was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The apparent porosity and crushing force of the ceramic balls were tested by Archimedes hydrostatic weighing method and crushing strength tester respectively. The tested results showed that the apparent porosity of the porous ceramic balls mainly influenced by species and addition amount of the pore-forming additive. The apparent porosity increases with the adding of the pore-forming additive. The apparent porosity and crushing force of the optimized porous ceramic balls was 49.68% and 1.17 kN respectively, which is a potential candidate used for waste water filtration.
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Jiang, Hong. « Research on Applied-Information Technology in Online Compact System Based on Serial Communication ». Advanced Materials Research 1046 (octobre 2014) : 431–35. http://dx.doi.org/10.4028/www.scientific.net/amr.1046.431.
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The ceramic industry fall into two main categories: daily used ceramics and craft ceramic. With the demand for daily used ceramics is increasing in my country, ceramics enterprises are faced with intense market competition. Based on the investigation of ceramic industrial production, the traditional method for Ceramic production has some disadvantages, such as long periods of dies production, complicated production process, wasting human resource, high cost, short life, poor quality, easy to damage. According to the characteristics of daily used ceramics, this paper presents a rapid prototyping system based on RS-232C compacts. This system can cancel the long and complex development process of the dies, and can achieve rapid prototyping of ceramic body, thereby greatly reducing the cost of production of ceramic manufacturers.
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Pek, Emrah, Sezer Cihaner Keser et Çetin Güler. « Deficiencies and potential corrections in ceramic art education according to the ceramic industry employees ». Cypriot Journal of Educational Sciences 17, no 9 (30 septembre 2022) : 3367–77. http://dx.doi.org/10.18844/cjes.v17i9.7739.
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Ceramics may be considered one of the most important and oldest inventions that give information about the history of humanity. Dating back to 8000 BC, ceramic has been used in many areas of daily life, such as kitchenware, sanitary ware, space technology, weapon industry and artistic production. In this context, the use of ceramics as an industrial material has resulted in the ceramic industry which requires education as an indispensable field. This study aims to determine the deficiencies and potential corrections for these deficiencies from the views of the employees who currently work in the field of ceramics. The study was conducted as a phenomenological study, which is one of the qualitative research designs. Fifteen employees participated in the study. The data of the study was collected by interviewing the employees. The findings of the study suggest that outdated curricula, narrow and insufficient industrial field courses, the need for self-development of the lecturer in the industrial field, the necessity of establishing a relationship between the ceramic industry and education and insufficient and inadequate computer design courses with software not suitable for the industry are the main deficiencies along with some others. Keywords: Art education, ceramic, industrial ceramic, design, sector, employee
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Sugiyama, Toyohiko, Hajime Nagae, Kazuo Suzuki et Kenichi Nakano. « Ceramic Brick with High Water Retentivity Prepared from Ceramic Waste and by Products ». Advances in Science and Technology 45 (octobre 2006) : 2235–39. http://dx.doi.org/10.4028/www.scientific.net/ast.45.2235.
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Many kinds of industrial waste were examined as potential constituents of ceramic bricks or tiles. The basic physical properties of these materials were measured, such as sintering temperature, water absorption, porosity, density, color, chemical stability and bending strength. Several kinds of sintered ceramics containing large amounts of waste materials were obtained by adjusting the amount of the waste materials added to the ceramics. These were fired at temperatures lower than 1000°C. A lowering of firing temperature results in a reduction of discharge of CO2 on the production process. Ceramic brick with high water retention is expected to mitigate the heatisland phenomenon by the latent heat of evaporation. Porous ceramics were prepared using industrial waste, burned ash and recycled roofing tile as raw materials. The permeability, water retentivity, water absorption, and other properties of the porous recycled ceramics were investigated. The pF value of the ceramics was measured as an indicator of water retentivity. An appropriate method of characterizing water retentive ceramic materials was also discussed based on results of fundamental examination of the ceramics under practical conditions.
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Regueiro, M., E. Sánchez, V. Sánz et E. Criado. « Cerámica Industrial en España ». Boletín de la Sociedad Española de Cerámica y Vidrio 39, no 1 (28 février 2000) : 5–30. http://dx.doi.org/10.3989/cyv.2000.v39.i1.872.
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He, Jiabei, Mengshan Song, Kaiyun Chen, Dongxiao Kan et Miaomiao Zhu. « Polymer-Derived Ceramics Technology : Characteristics, Procedure, Product Structures, and Properties, and Development of the Technology in High-Entropy Ceramics ». Crystals 12, no 9 (13 septembre 2022) : 1292. http://dx.doi.org/10.3390/cryst12091292.
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Ceramics have become indispensable materials for a wide range of industrial applications due to their excellent properties. However, the traditional preparation of ceramic materials is often time-consuming and involves high sintering temperatures. These result in considerable energy consumption and high production costs, which limit the application of these materials in some industries. This paper focuses on the advent of polymer-derived ceramics (PDCs) technology, which enabled the application of ceramics to fibers, composites, coatings, and films, mainly due to the excellent design, process, and low-temperature ceramic properties. We review and evaluate the important research progress made in polymer-derived ceramics technology in recent years and discuss its recent development into high-entropy ceramics. The development of polymer-derived ceramics technology in the field of high-entropy ceramics has broad research prospects, which can greatly improve the understanding and design of high-entropy materials and accelerate their application in the industrial field.
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Chen, Lili, Ulana Cikalova, Beatrice Bendjus, Stefan Muench et Mike Roellig. « Characterization of ceramics based on laser speckle photometry ». Journal of Sensors and Sensor Systems 9, no 2 (20 octobre 2020) : 345–54. http://dx.doi.org/10.5194/jsss-9-345-2020.
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Abstract. Advanced ceramic components are frequently used in industrial applications. As a brittle material, ceramic reacts very suddenly to excessively high stresses. Existing defects lead to rapid crack growth followed by spontaneous destruction. This leads to a functional failure of the entire component. It is therefore important to develop innovative techniques to ensure a good quality condition of ceramic products. Laser speckle photometry (LSP) is an optical nondestructive testing method. It is based on the dynamic analysis of time-resolved speckle patterns that are generated by an external excitation. In this paper, we will present two investigations on ceramic components using the LSP technique. One is the nondestructive stress characterization on ceramic surfaces, and the other is the defect detection on ceramics components. The aim is to improve the quality and safety control of ceramic production in the challenging industrial field. Preliminary results have shown the potential of the LSP sensor system for the nondestructive characterization of ceramics in terms of stress monitoring and surface defect detection.
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Ding, Liang. « Analysis of Creative Teaching of Ceramics and Student Creativity in Colleges and Universities in China ». Scientific and analytical journal Burganov House. The space of culture 18, no 2 (10 mai 2022) : 80–86. http://dx.doi.org/10.36340/2071-6818-2022-18-2-80-86.
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Ceramic art has been an important part of human culture for thousands of years and it has had a significant influence all over the world. China is the home country of ceramics and the progression of ceramic culture has contributed much to the development of human history and civilisation. Education has played a key role in this progression of ceramic art and through ceramics education, the ceramic culture, ceramic arts and the crafts of ceramics, ceramic skills have been passed down from one generation to the next. Ceramics education is an important part of art education. Faced with the globalisation of culture and economics, Chinese ceramic art education and global ceramic art education have a mutual influence on each other and are closely linked together. Therefore, achieving perfection and development in the ceramics education in Chinese universities, specifically in ceramics teaching, is important. In the long term, training students that have creative abilities will influence the current status and the future of ceramics education in China. Today, in China, ceramics are classified as either ‘handwork’ or ‘industrial arts’, focusing on production-oriented requirements like practicality, aesthetic appearance and economy. Ceramics teaching has been restricted by this traditional thinking as it conforms to existing stereotypes. Lacking an interactive paradigm that is open to change, the ceramics teaching in China attaches great importance to the mere training of skills. By analysing the current situation of ceramics education in colleges and universities in China, this paper discusses how to use creative teaching methods to guide students' learning consciousness, improve learning motivation and develop students' creativity from the perspectives of creative teaching and teaching creativity. This is to provide enlightening reflections on the cultivation of students' creativity in ceramics education in colleges and universities.
Thèses sur le sujet "Ceramica industriale"
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Montaleone, Daniel. « Studio ed ottimizzazione di processi per la produzione di membrane ceramiche per la separazione di idrogeno ». Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7624/.
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Questa tesi descrive l’attività scientifica svolta presso l’istituto CNR-ISTEC di Faenza. Lo scopo è stato lo studio e l’ottimizzazione del processo per la realizzazione di una membrana ceramica permselettiva all’idrogeno usufruibile in applicazioni industriali. Grazie alle prove effettuate è stata possibile la realizzazione tramite colaggio su nastro dei due strati ceramici che formano la membrana: un supporto poroso e un film sottile e denso. I nastri, dopo essiccamento, sono stati tagliati con la geometria desiderata, impilati uno sull’altro, termocompressi e sinterizzati. L’attività svolta ha permesso l’ingegnerizzazione di una membrana ad elevato contenuto tecnologico con le proprietà necessarie per poter essere impiegata in un processo di purificazione di idrogeno più semplice, efficiente ed economico rispetto a quelli utilizzati fino ad ora.
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Lo, Giudice Agata Stella Maria Bianca. « La dichiarazione ambientale di prodotto come strumento di sviluppo sostenibile di un territorio. Il distretto industriale della ceramica di Caltagirone ». Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/968.
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La storia della ceramica in Sicilia è strettamente connessa con quella delle sue città e, soprattutto, del territorio che, con le sue risorse materiali, ha, da sempre, favorito lo sviluppo di attività artigianali legate all arte fittile.
Nonostante l evidente crisi che il settore sta attraversando, appare importante sottolineare il ruolo fondamentale che, ancora oggi, la ceramica ha nell economia e nel tessuto sociale siciliano: il sistema produttivo ceramico, infatti, è uno dei pochi sistemi produttivi ad essere citato, come punta di eccellenza, nel documento della Regione Sicilia Strategia regionale per l innovazione 2007-2013 .
Questa crisi, se da una parte rappresenta, sicuramente, un fattore negativo dall altro lato, se ben sfruttata, potrebbe rappresentare anche un opportunità di rilancio per questo ambito produttivo.
In tale contesto si inserisce l idea di questo elaborato che ha come obiettivo quello di proporre, accanto agli usuali marchi di qualità ed eccellenza delle produzione, l utilizzo di uno dei marchi ambientali volontari di III tipo attualmente più diffuso, l EPD, nell ambito di uno dei distretti più rilevanti a livello non solo regionale ma anche italiano e internazionale: quello della ceramica artistica e tradizionale di Caltagirone.
L adozione di un sistema di questo, convalidato da una terza parte indipendente, potrebbe contribuire a sottolineare, da una parte, l impegno alla tutela dell ambiente degli artigiani e, dall altra, e costituire un valido strumento di valorizzazione e differenziazione, sul mercato, dei prodotti ceramici calatini e, di conseguenza, anche del territorio dove essi hanno origine; in più, porrebbe rappresentare un ulteriore segno distintivo per proteggere, e tutelare, i prodotti tipici e difenderli dalla concorrenza (es: dalle imitazioni cinesi).
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FAVALLI, RENATA C. « Modelagem e simulacao do processo de atomizacao na industria de revestimento ceramico ». reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11016.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
FAPESP:96/11957-7
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Poletto, Emílio Rafael [UNESP]. « Relações de produção e apoio intitucional no arranjo produtivo local de pisos e revestimentos cerâmicos de Santa Gertrudes ». Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/95619.
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Nas últimas duas décadas aumentaram as pesquisas sobre as aglomerações de Pequenas e Médias Empresas (PMEs), que apresentavam alto crescimento e competitividade no mercado mundial. Os arranjo produtivo locais (APLs) podem ser designados como aglomerações de agentes econômicos, políticos e sociais, localizados em um mesmo território, com foco em um conjunto específico de atividades do setor produtivo e que apresentam vínculos expressivos de interação, cooperação e aprendizagem. Os APLs geralmente incluem empresas, que são aquelas que produzem os bens e serviços finais, fornecedoras de equipamentos e outros insumos, prestadoras de serviços, vendedoras, clientes, cooperativas, associações e representações. O APL de pisos e revestimentos cerâmicos de Santa Gertrudes (SP) é formado pelos municípios de Santa Gertrudes, Rio Claro, Cordeirópolis, Limeira e Piracicaba. Há 33 indústrias ceramistas localizadas neste APL, além de uma rede de instituições e prestadores de serviços. Os objetivos do presente trabalho são: buscar uma melhor compreensão da dimensão local do aprendizado e da cooperação entre indústrias e instituições no território do APL de Santa Gertrudes e mostrar como os recursos do território foram utilizados na competitividade das indústrias ceramistas locais.
In the last two decades have increase the researchs about the agglomerations of Small and Medium Enterprises (SME), which had high growth and competitiveness in the global trade. The Local Productive Arrangements (LPAs) can be designated as agglomerations of economic, political and social agents, located in the same territory, with a focus on a specific activities branch of the productive sector and that have expressive linkages of interaction, cooperation and learning. The LPAs usually include enterprises, which are those that produce the final goods and services, suppliers of equipments and other inputs, service providers, sellers, customers, cooperatives, associations and representations. The LPA of ceramic floors and tiles of Santa Gertrudes is formed by municipalities Santa Gertrudes, Cordeirópolis, Rio Claro, Limeira and Piracicaba. There are 33 industries located in this LPA, and a network of institutions and service providers. The aims of present dissertation are: seek a better comprehension of the local dimension of learning and cooperation between industries and institutions in the territory of Santa Gertrude’s LPA and show how the resources were used in the competitiveness of the locals ceramists industries.
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Schmitt, Thais de Jesus. « Vidro de sistema Li2O-ZrO2-SiO2 como alternativa para síntese de pigmento cerâmico contendo resíduo industrial rico em Fe2O3 ». Universidade do Estado de Santa Catarina, 2012. http://tede.udesc.br/handle/handle/1625.
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Recently, the traditional ceramics industry has developed great interest in obtaining pigments which may have firing temperature stable, so that the action of molten glass does not interfere with the final product. In the coating industry, whose selection is strongly influenced by the visual appearance of the decorated surface, the color is an important feature. In order to search for new pigments that replace or optimize the old, new synthetic methods has being studied, as well as new systems and the incorporation of pigments alternative raw materials. Thus, this work studied the possibility of use of industrial byproducts, rich in iron, in the synthesis of pigments encapsulated in glassy matrix. The by product from the surface treatment of sheet metal was evaluated and characterized by chemical composition, crystalline phases and morphology of particles. The residue was added to the glassy matrix, homogenized using conventional milling and calcined at temperatures of 700 ° C to 900 ° C for 15 minutes. The characterization of the pigments obtained were performed using XRD and SEM. The pigments were used in ceramic and enamel porcelain paste and observed by optical microscopy and SEM. The results showed that color development becomes effective when the pigment is incorporated into porcelain paste, because it is a less aggressive. Was concluded that the developed color is influenced by oxide content employed, milling conditions and the processing temperature. The results showed that the use of the pigment developed does not interfere in the microstructural characteristics of pigmented material.
Recentemente, na indústria cerâmica tradicional, tem havido um interesse crescente na obtenção da inclusão de pigmentos na qual a temperatura de queima seja estável de tal forma que ação dos vidros fundidos não interfiram no produto final. No setor de revestimento, cuja seleção é fortemente influenciada pelo aspecto visual da superfície decorada, a cor passa a ser uma importante característica. Com o intuito de buscar novos pigmentos que substituam ou otimizem os já conhecidos, novos métodos de síntese estão sendo pesquisados, bem como novos sistemas pigmentantes e a incorporação de matérias primas alternativas. Desta forma, no presente trabalho, procurou-se estudar a possibilidade de aproveitamento de subprodutos industriais, ricos em ferro, na síntese de pigmentos encapsulados em matriz de vidro. O subproduto que é proveniente, do processo de tratamento superficial de chapas metálicas foi avaliado. O subproduto foi caracterizado quanto a sua composição química, fases cristalinas presentes e morfologia das partículas. O resíduo foi adicionado à matriz vítrea, sendo posteriormente homogeneizados, utilizando moagem convencional e seguidos de calcinação nas temperaturas de 700°C até 900°C por 15 minutos. As caracterizações dos pigmentos obtidos foram realizadas através de difratometria de raios X e microscopia eletrônica de varredura. Os pigmentos foram aplicados em esmalte cerâmico e em massa porcelânica. Posteriormente, foram realizadas análises de microscopia ótica e eletrônica de varredura. Os resultados evidenciaram que o desenvolvimento da cor torna-se efetivo quando o pigmento é incorporado em massa porcelânica, por se tratar de um meio menos agressivo. A coloração desenvolvida é influenciada por variáveis como o teor de óxido empregado, condições de moagem e temperatura de processamento. Os resultados mostraram ainda que a utilização do pigmento desenvolvido não interfere nas características microestruturais do material pigmentado.
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Prim, Sônia Richartz. « Síntese e caracterização de pigmento de hematita, obtido a partir de um subproduto da indústria siderúrgica ». Universidade do Estado de Santa Catarina, 2009. http://tede.udesc.br/handle/handle/1749.
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Previous issue date: 2009-11-27Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
In the ceramic industry of wall and floor tiles, whose selection is strongly influenced by the visual aspect of the decorated surface, the color becomes one of the most important characteristics. With the purpose to search for new pigments that replace or optimize the already known, news method to synthesis are being researched, such as new pigments system and the incorporation of new raw materials. In this work was investigated the possibility of use of a waste industrial rich in iron in the synthesis of encapsulated pigments. It was selected five wastes, four from casting surfacing process and one waste from sheet metal treatment process. The wastes was characterized by chemical composition, cristalline phases present and morphology of the particles. The waste that introduced more percentage of hematite were added to the silica matrix, crystalline and amorphous and then homogenized using conventional milling and high energy followed by calcination at temperatures of 1050 to 1300ºC for 2 hours. The characterizations of pigments obtained were made through X-ray diffraction and scanning electron microscopy. The pigments were applied in ceramic enamel and porcelain body. Afterwards, it was carried out by colorimetry and scanning electron microscopy. The results showed that the development of color becomes effective when the pigment is incorporated in ceramic body, because it is less aggressive. The color developed is influenced by variables such as the oxide content employed, conditions of milling and processing temperature. The results have showed that the use of developed don t interfere in microstructural characteristics of pigmented material.
Na indústria da cerâmica de revestimento, cuja seleção é fortemente influenciada pelo aspecto visual da superfície decorada, a cor passa a ser uma importante característica. Com o intuito de buscar novos pigmentos que substituam ou otimizem os já conhecidos, novos métodos de síntese estão sendo pesquisados, bem como novos sistemas pigmentantes e a incorporação de matérias primas alternativas. Desta forma, no presente trabalho, procurou-se estudar a possibilidade de aproveitamento de subprodutos industriais, ricos em ferro, na síntese de pigmentos encapsulados em matriz de sílica. Foram avaliados cinco subprodutos, sendo quatro provenientes do processo de acabamento de peças fundidas e um gerado no processo de tratamento superficial de chapas metálicas. Os subprodutos foram caracterizados quanto a sua composição química, fases cristalinas presentes e morfologia das partículas. O subproduto que apresentou maior percentual de hematita foi adicionado à matriz de sílica, na forma cristalina (quartzo) e amorfa, sendo posteriormente homogeneizados, utilizando moagem convencional e de alta energia seguidos de calcinação nas temperaturas de 1050 a 1300ºC por 2 horas. As caracterizações dos pigmentos obtidos foram realizadas através de difratometria de raios X e microscopia eletrônica de varredura. Os pigmentos foram aplicados em esmalte cerâmico e em massa porcelânica. Posteriormente, foram realizadas análises colorimétrica e de microscopia eletrônica de varredura. Os resultados evidenciaram que o desenvolvimento da cor torna-se efetivo quando o pigmento é incorporado em massa porcelânica, por se tratar de um meio menos agressivo. A coloração desenvolvida é influenciada por variáveis como o teor de óxido empregado, condições de moagem e temperatura de processamento. Os resultados mostraram ainda que a utilização do pigmento desenvolvido não interfere nas características microestruturais do material pigmentado.
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Silva, Bruna Pereira da. « Estudo da utilização de cinza de casca de arroz e efluente de biogás na plasticidade de materiais cerâmicos ». Universidade Estadual do Oeste do Paraná, 2017. http://tede.unioeste.br/handle/tede/3117.
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The study analyzed the importance of seeking technologies for sustainable development in the field of red ceramic products. The plasticity characteristics of three types of soils, dystroferric Red Latosol, kaolinite and bentonite were evaluated when tested with water and with condensed gas (biogas effluent). Composites were made, and the Latosol was considered as the matrix and the additions of kaolinite, bentonite and rice husk ash as reinforcements. The methodology used followed the prerogatives of ABNT standards, NBR 6459, to determine the liquidity limit. The main focus of the analysis was the variation in the plasticity range of the composites when the molding fluid changes from water to condensed gas. The results showed that the Red Latosol in natura does not present a high plasticity, suggesting the incorporation of additives, whereas kaolinite and bentonite in natura have high plasticity. The incorporation of the reinforcements increased the plasticity of the matrix, and the kaolinite implied a smaller increase of plasticity and the bentonite in a larger increase. It was also observed that the use of condensed gas in substitution of water resulted in an improvement of the plastic characteristics of the matrix, suggesting its use in the manufacture of ceramic pieces. The contribution of this study is the reduction of the use of natural resources and the substitution of water by an industrial residue, in the production of ceramic materials, as regards to the improvement of plasticity.
O estudo analisou a importância de se buscar tecnologias para o desenvolvimento sustentável, no ramo dos produtos cerâmicos vermelhos. Foram avaliadas as características de plasticidade de três tipos de solos, Latossolo Vermelho distroférrico, caulinita e bentonita,quando ensaiados com água e com gás condensado (efluente de biogás). Foram feitos compósitos, sendo o Latossolo considerado a a matriz e as adiçoes de caulinita, bentonita e cinza de casca de arro consideradas como reforços. A metodologia empregada seguiu as prerrogativas das normas da ABNT, NBR 6459 para determinação do limite de liquidez. O principal foco da análise foi a variação na faixa de plasticidade dos compósitos quando o fluido de moldagem muda de água para gás condensado. Os resultados mostraram que o Latossolo Vermelho in natura não apresenta uma elevada plasticidade, sugerindo-se a incorporação de aditivos, enquanto a caulinita e a bentonita in natura apresentam plasticidades altas. A incorporação dos reforços elevou a plasticidade da matriz, sendo que a caulinita implicou em menor incremento de plasticidade e a bentonita em maior incremento. Observou-se também que a utilização do gás condensado em substituição a água resultou em melhora das características plásticas da matriz, sugerindo seu uso na fabricação de peças cerâmicas. A contribuição deste estudo está na redução da utilização de recursos naturais e na substutição da água por um resíduo industrial, na produção de materiais cerâmicos, no que se refere à melhoria da plasticidade.
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Mazzacani, Valentina. « La gestione delle acque nell'industria ceramica : il caso di studio della Florim Ceramiche SpA ». Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
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L'acqua non è solo un bene essenziale, è anche una risorsa molto versatile in grado di procurare un'ampia gamma di benefici ma al tempo stesso è importante avere la consapevolezza che si tratti di una risorsa esauribile. Uno dei suoi maggiori utilizzi è quello industriale nel quale non è di fondamentale importanza solo il quantitativo di risorsa idrica sfruttata ma anche le sue caratteristiche qualitative.
Obiettivo della tesi è quello di indagare la gestione della risorsa idrica nel contesto dell'industria ceramica cercando di capire quali sono gli utilizzi principali, i quantitativi e lo standard qualitativo dell'acqua al termine del processo industriale. Un ruolo principale nell'ambito della sostenibilità ambientale è svolto dalle aziende ceramiche del territorio che sempre più acquisiscono know-how ambientale e si adottano di procedure e tecnologie in grado di salvaguardare il territorio in cui operano. A tal fine ho condotto uno studio su una delle maggiori aziende del distretto ceramico di Sassuolo: Florim ceramiche s.p.a. analizzando il processo produttivo, quello depurativo e i quantitativi utilizzati cercando di capire gli ambiti di miglioramento attraverso la definizione di interventi sostenibili.
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Knop, Wanessa Rejane. « Estudo da viabilização da incorporação do pó de exaustão em massa cerâmica ». Universidade do Estado de Santa Catarina, 2009. http://tede.udesc.br/handle/handle/1744.
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Previous issue date: 2009-09-28Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Inside the context of alternative search for the use of industrial waste as natural raw for the industrial ceramic, this work had the objective to evaluate the possibility of the use of exhauster powder generated in the foundry process. The characterization was performed by scanning electron microscopy, x-ray difratometry and thermal analysis (ATD, TG) noting that it is a powder with a high content of fine and compatible with the composition of ceramic bodies. Formulations were prepared with different exhauster powder content. The sintered materials at 1000, 1100 and 1200oC were characterized according technological properties as water absorption, linear shrinkage, bulk density. Microstructural analysis was carried out by scanning electron microscopy and X-ray diffraction. The results showed that it is possible to use the waste. It was observed that the waste increase the density in sintering process, and with high levels of waste occurs an increase of the porosity and intensification in the color of the new material. According to the results obtained in preliminary stage set up the methodology of work for the development of new materialThe second stage were developed new formulations prepared with different exhauster powder content, based on the preliminary stage of research and using as criterion the behavior after sintered. This new material were characterization by thermal analysis (ATD, TG), and some technological properties such as water absorption, linear shrinkage, bulk density. Finally were tests for resistance to bending, resistance to abrasion than the morphological analysis.The results showed the new material can be used as ceramic tiles, for, in general no significant changes it s physical and mechanical studied of ceramic body exhauster powder content in relation to the samples only with the mass, and all the compositions are within the minimum required for the characteristics analyzed.
Dentro do contexto de busca de alternativas para a utilização de subprodutos industriais como matéria-prima para a indústria cerâmica, este trabalho avaliou a possibilidade do emprego de pó de exaustão proveniente do processo de fundição em massa cerâmica atomizada tipo semi-grês. Este material foi caracterizado em uma etapa preliminar por Microscopia Eletrônica de Varredura (MEV), Difração de Raios-X (DRX), Análise Térmica Diferencial e Termogravimétrica (ATD e TG) constatando-se que se trata de um pó com alto teor de finos e composição compatível com a de massas cerâmicas. Foram desenvolvidas formulações com diferentes teores de pó de exaustão. Os materiais sinterizados entre 1000 e 1200oC foram caracterizados quanto a propriedades tecnológicas como a absorção de água, retração linear e densidade aparente. A análise microestrutural foi realizada utilizando Microscopia Eletrônica de Varredura (MEV). Estes resultados demonstraram a viabilidade da utilização do subproduto. Através dos experimentos observou-se que o subproduto promoveu um incremento no grau de sinterização, e elevados teores do mesmo aumentam a formação de porosidade e intensificam a cor do novo material. De acordo com os resultados obtidos na etapa preliminar definiu-se a metodologia de trabalho para o desenvolvimento do novo material. Na segunda etapa foram desenvolvidas novas formulações com a incorporação do pó de exaustão, baseada na etapa preliminar da pesquisa e utilizando como critério o comportamento após a sinterização. Este novo material foi caracterizado através da análise térmica diferencial, termogravimétrica, e de algumas propriedades tecnológicas como a absorção de água, retração linear e densidade aparente. Por fim foram realizados testes de resistência á flexão, resistência à abrasão além da análise morfológica.Os resultados obtidos demonstram que o novo material pode ser utilizado como placa cerâmica para revestimento, pois, em geral não houve mudanças significativas nas propriedades físicas e mecânicas estudadas da massa cerâmica com a incorporação do subproduto pó de exaustão em relação com as amostras somente com a massa e todas as composições estão dentro dos valores mínimos exigidos para as características analisadas.
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Prim, Sônia Richartz. « Desenvolvimento de pigmentos espinélio : uma alternativa para uso de resíduos de galvanoplastia ». Universidade do Estado de Santa Catarina, 2014. http://tede.udesc.br/handle/handle/614.
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Previous issue date: 2014-08-20Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
The search for ceramic pigments with good properties are the basis of research conducted in this industry, in view of the importance of color for the final finished product. Aiming at seeking new pigments to replace or optimize existing ones, new synthesis methods and the incorporation of alternative raw materials are under study. In this work, we studied the possibility of using industrial waste from the treatment of effluents from the galvanoplasty process to synthetize pigments with spinel structure. The characterization of this type of waste and analysis of its potential to be used as chromophoric source were assessed in terms of chemical and mineralogical composition, thermal behavior, among others. The proportion of the transition elements, nickel and chromium present in the waste, allowed for the formation of important spinel structures. The synthesis method adopted consisted of the following steps: formulation; homogenization; calcination; and washing, when necessary. Firstly, we studied the addition of chromophoric ions Cr, Ni and Co in the structures MAl2O4, M=Zn, Mg, as well as the adoption of different temperatures (1000 to 1400 ºC/3h). The effect caused by solid dissolution of each ion in the structures and its relationship with the synthesis temperature was evaluated. It was possible to develop pigments with interesting color performance and different hues. Afterwards, the selection of a structure to obtain pigments from this selected chromophoric source was evaluated. We chose to work with structures NiCr2O4 and (Ni,Fe)(FeCr)2O4. The calcination temperature adopted was 1200 ºC/3h. The structures allowed for black pigments, however, with low pigmenting performance. In order to improve the performance of pigments with the addition of residue, we chose to further investigate the pigments formed with the 17 three elements nickel, iron and chromium at an equal molar ratio, resulting in the supposed structure (Ni0,5Fe0,5)(Fe0,5Ni0,5Cr1,0)O4, taking into consideration their degree of inversion. For this new step of the study, the synthetizing temperature adopted was 1000 ºC/3h. The aim was to assess the possibility of recovering the CaSO4 derived from the residue composition. For such, a washing stage was added to the pigment synthesis process. This new formulation favored the formation of the desired spinel phase, reducing the presence and intensity of secondary phases. The absence of the characteristic peaks indicating the presence of CaSO4 no DRX indicates the effectiveness of the washing process, which contributes to a reduction of a liquid phase formation and a better granulometric control. The results obtained after application showed that the synthesized pigments presented some instability during the application process. Therefore, studies were conducted to assess the influence of adding different concentrations of cobalt. The pigments synthetized with the addition of 0.3 mol of cobalt presented better pigmenting properties compared to pigments synthetized with the same structure. Adding waste into this composition led to the formation of pigments with improved performance, especially after application testing. The results allowed to associate this effect with the presence of secondary phases such as pyroxene, derived from the presence of SiO2 and CaO in the waste, resulting from the treatment process. The reproducibility of pigments synthesized with different batches of waste for the best composition studied was also evaluated. It was observed that they presented a good performance in face of the industrial conditions.
A busca por pigmentos cerâmicos com boas propriedades são a base das pesquisas realizadas neste setor, tendo em vista, a importância da cor para o produto final acabado. Com o intuito de buscar novos pigmentos que substituam ou otimizem os já conhecidos, novos métodos de síntese estão sendo pesquisados, bem como, a incorporação de matérias primas alternativas. No presente trabalho, estudou-se a possibilidade de aproveitamento de um resíduo industrial, proveniente do tratamento de efluentes do processo de galvanoplastia, na síntese de pigmentos com estrutura espinélio. A caracterização do resíduo e análise de suas potencialidades para uso como fonte cromófora, foram avaliadas em termos de composição química e mineralógica, comportamento térmico, entre outros. Os percentuais dos elementos de transição Níquel e Cromo presentes no resíduo possibilitaram a formação de estruturas de espinélios importantes. O método de síntese adotado englobou as seguintes etapas: formulação; homogeneização; calcinação e lavagem quando necessário. Primeiramente, foi estudada a adição dos íons cromóforos Cr, Ni e Co nas estruturas, MAl2O4, M=Zn, Mg, bem como, de diferentes temperaturas (1000 a 1400 ºC/3h). Avaliou-se o efeito causado pela dissolução sólida de cada íon nas estruturas, e sua relação com a temperatura de síntese. Foi possível desenvolver pigmentos com desempenho cromático interessante e tonalidades distintas. Posteriormente, foi avaliada a seleção de uma estrutura para a obtenção de pigmentos a partir desta fonte cromófora selecionada. Optou-se por trabalhar com as estruturas NiCr2O4 e (Ni,Fe)(FeCr)2O4. A temperatura de calcinação adotada foi de 1200 ºC/3h. As estruturas permitiram obter pigmentos negros, entretanto, com baixo desempenho pigmentante. A fim de aprimorar o desempenho dos pigmentos com adição de resíduo, 15 optou-se por investigar melhor os pigmentos formados com os três elementos Níquel, Ferro e Cromo, em uma igual proporção molar, resultando na suposta estrutura (Ni0,5 Fe0,5)(Fe0,5Ni0,5Cr1,0)O4, tendo em consideração o seu grau de inversão. Para esta nova etapa do trabalho a temperatura de sinterização adotada foi de 1000 ºC/3h. O objetivo foi avaliar a possibilidade de recuperação do CaSO4 proveniente da composição do resíduo. Para tanto, uma etapa de lavagem foi inserida no processo de síntese dos pigmentos. Esta nova formulação favoreceu a formação da fase espinélio desejada, diminuindo a presença e intensidade das fases secundárias. A não observância dos picos característicos da presença de CaSO4 no DRX, indica a eficácia do processo de lavagem, contribuindo para redução da formação de fase líquida e melhor controle granulométrico. Os resultados obtidos após aplicação permitiram concluir que os pigmentos sintetizados apresentaram certa instabilidade durante o processo de aplicação. Portanto, foram realizados estudos para avaliar a influência da adição de diferentes concentrações de Cobalto. Os pigmentos sintetizados com adição de 0,3 mol de Cobalto apresentaram melhores propriedades pigmentante ao serem comparados aos pigmentos sintetizados com a mesma estrutura. A incorporação de resíduo nesta composição propiciou a formação de pigmentos com melhor desempenho, principalmente após os testes de aplicação. A análise dos resultados permitiu associar este efeito a presença de fases secundárias, como o piroxênio, provenientes da presença de SiO2 e CaO no resíduo, resultante do processo de tratamento. A reprodutibilidade dos pigmentos, sintetizados com distintos lotes de resíduo para a melhor composição estudada, também foi avaliada. Pode-se observar que os mesmos apresentaram bom desempenho frente às condições industriais.
Livres sur le sujet "Ceramica industriale"
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Carlo, Bojani Gian, Ballardini Gaetano 1878-1953, Museo internazionale delle ceramiche (Faenza, Italy) et Museo artistico industriale (Rome, Italy), dir. Gaetano Ballardini e la ceramica a Roma : Le maioliche del Museo artistico industriale. Firenze : Centro Di, 2000.
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Gentili, Enzo Biffi. Guido Andloviz : Designer e direttore artistico per quarant'anni di ceramica industriale italiana : 1923-1961 : catalogo della mostra. Monfalcone [Italy] : Edizioni della laguna, 1995.
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Interceram, Tile & Brick International. et Keramische Zeitschrift, dir. Ceramic suppliers international : Industrial buyers' guide for ceramics. Freiburg : Verlag Schmid Publication, 1993.
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Interceram, Tile & Brick International. et Keramische Zeitschrift, dir. Ceramic suppliers international : Industrial buyers' guide for ceramics. Freiburg : Verlag Schmid Publication, 1994.
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Nicola, Babini Gian, Haviar Miroslav, Šajgalík Pavol et NATO Advanced Research Workshop on Engineering Ceramics '96 (1996 : Smolenice, Slovakia), dir. Engineering ceramics '96 : Higher reliability through processing. Dordrecht : Kluwer, 1997.
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G, Kostorz, Eidgenössische Technische Hochschule Zürich et ETHZ Latsis Symposium (1988 : Zürich, Switzerland), dir. High-tech ceramics : Viewpoints and perspectives. London : Academic Press, 1989.
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(Firm), Find/SVP, dir. High technology industrial ceramics. New York, NY : FIND/SVP, 1987.
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Jones, J. T. Ceramics industrial processing and testing. 2e éd. Ames : Iowa State University Press, 1993.
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Institute of Ceramics (Great Britain), dir. Health and safety in ceramics : A guide for educational workshops and studios. 3e éd. Penkhull, Stoke-on-Trent, Staffs : The Institute, 1991.
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Hurley, George F. Processing for reliability of advanced caramics : Proceedings of a conference sponsored by the Industrial Research Institute and held at the Corning Glass Works, Corning, New York on October 21-22, 1986. Sous la direction de Industrial Research Institute (New York, N.Y.). New York : Industrial Research Institute, 1986.
Trouver le texte intégralChapitres de livres sur le sujet "Ceramica industriale"
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Stubos, A. K., A. Mitropoulos, T. Steriotis, F. K. Katsaros, G. E. Romanos et N. K. Kanellopoulos. « Ceramic Membranes : Industrial Applications ». Dans Physical Adsorption : Experiment, Theory and Applications, 485–510. Dordrecht : Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5672-1_19.
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Rigaud, M. « Corrosion of Industrial Refractories ». Dans Ceramic Transactions Series, 135–54. 735 Ceramic Place, Westerville, Ohio 43081 : The American Ceramic Society, 2012. http://dx.doi.org/10.1002/9781118370940.ch7.
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R&D Colorobbia Department. « Ceramic Inkjet Inks ». Dans Handbook of Industrial Inkjet Printing, 151–62. Weinheim, Germany : Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527687169.ch7.
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Hatta, Hiroshi, Roland Weiss et Patrick David. « Carbon/Carbons and their Industrial Applications ». Dans Ceramic Matrix Composites, 85–146. Hoboken, NJ, USA : John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118832998.ch5.
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Soula, Gérard. « Ceramics from Organometallic Polymers : Industrial Perspectives ». Dans Inorganic and Organometallic Polymers with Special Properties, 31–42. Dordrecht : Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2612-0_3.
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Withers, C. J. « Fibrous ceramic filters in industrial use ». Dans Gas Cleaning in Demanding Applications, 130–49. Dordrecht : Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-1451-3_7.
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Ferber, M. K., et H. T. Lin. « Characterization of Ceramic Components Exposed in Industrial Gas Turbines ». Dans Ceramic Transactions Series, 237–51. Hoboken, NJ, USA : John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118405970.ch16.
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Müller-Simon, Hayo. « Redox-Dependent Glass Properties and Their Control Under Industrial Conditions ». Dans Ceramic Transactions Series, 299–313. Hoboken, NJ, USA : John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118405949.ch29.
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Yuan, Fangmin. « Application of Piezoelectric Ceramics in Industrial Products ». Dans Lecture Notes in Electrical Engineering, 807–13. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3250-4_103.
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Kübler, Jakob, Fernando Eblagon, Thomas Graule et Bruno Ehrle. « Development of Ceramic Composites for Industrial Wood-Cutting Tools ». Dans High-Performance Ceramics V, 1062–67. Stafa : Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/0-87849-473-1.1062.
Texte intégralActes de conférences sur le sujet "Ceramica industriale"
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Wenglarz, Richard A., Satish M. Calcuttawala et J. Edward Pope. « Ceramic Vane Demonstration in an Industrial Turbine ». Dans ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-gt-155.
Texte intégralRésumé :
A U. S. Department of Energy (DOE) program with the Allison Engine Company will demonstrate ceramic vanes in an industrial turbine. First-stage ceramic vanes and their metallic mounts are to be designed, fabricated, and operated in a relatively short-term engine test (up to 50 hr). The ceramic vanes and mounts will then be retrofitted into an existing turbine for operation at a commercial site for an extended duration test (up to 8000 hr). The ceramic vanes and metallic mounts have been designed. Thermal and stress analyses of the vanes have calculated acceptable fast fracture stress levels and probabilities of survival exceeding 99.99% for turbine continuous power and emergency shutdown (thermal shock) conditions. The maximum calculated steady-state stress is 169 MPa (24.5 ksi) at a material temperature of 1182°C (2160°F). Consequently, currently available ceramics appear to provide acceptable fast fracture strengths for use in industrial turbines. Long-term materials tests will evaluate the life times and retained strength of ceramics at stress and temperature levels in the range calculated from the ceramic vane analyses. The results of these tests will support the decision on which vane material will be used in the long duration turbine demonstration. A successful demonstration could provide a basis for incorporating first-stage ceramic vanes into current generation industrial turbines and also the introduction of ceramic airfoils into downstream rows of future high temperature Advanced Turbine System (ATS) engines.
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Wenglarz, Richard, Sy Ali et Abbie Layne. « Ceramics for ATS Industrial Turbines ». Dans ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-319.
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The U.S. Department of Energy and most U.S. manufacturers of stationary gas turbines are participating in a major national effort to develop advanced turbine systems (ATS). The ATS program will achieve ultra-high efficiencies, environmental superiority, and cost competitiveness compared with current combustion turbine systems. A major factor in the improved efficiencies of simple cycle ATS gas turbines will be higher operating temperatures than current engines. These temperatures strain the limits of metallic alloy and flow-path cooling technologies. Ceramics materials offer a potential alternative to cooled turbine alloys for ATS turbines due to higher melting points than metallics. This paper evaluates ceramics technology and plant economic issues for ATS industrial turbine systems. A program with the objective of demonstrating first-stage ceramic vanes in a commercial industrial turbine is also described.
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Meffre, A., R. Olives, X. Py, C. Bessada, P. Echegut et U. Michon. « Design and Industrial Elaboration of Thermal Energy Storage Units Made of Recycled Vitrified Industrial Wastes ». Dans ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62930.
Texte intégralRésumé :
New sensible heat storage materials for CSP (Concentrated Solar Power-plant) made of recycled ceramics from vitrified asbestos containing wastes are considered. Up to now, those inert ceramics are only used for road construction and the raw vitrified product is cooled industrially in cast-iron ingot mould without any particular care. Nevertheless, all obtained industrial glass-ceramic ingots present similar macro and micro structures. The present work is first focused on macro and micro structural properties of those materials related to cooling conditions and secondly on a comprehensive model of the current industrial cooling step. One of the major advantages of this storage material is the possibility to shape it directly at the outlet of the vitrification process to produce the thermal storage elements. Therefore, various geometries of the storage material could be obtained leading to a possible optimization of heat transfer performances and reduction in pressure drop. On the basis of the relationship between cooling conditions and properties, the cooling protocol needed to manufacture efficient thermal storage modules can be considered.
4
Easley, M. L., et J. R. Smyth. « Ceramic Gas Turbine Technology Development ». Dans ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-367.
Texte intégralRésumé :
Under the U.S. Department Of Energy/National Aeronautics and Space Administration (DOE/NASA) funded Ceramic Turbine Engine Demonstration Program, AlliedSignal Engines is addressing the remaining critical concerns slowing the commercialization of structural ceramics in gas turbine engines. These issues include demonstration of ceramic component reliability, readiness of ceramic suppliers to support ceramic production needs, and enhancement of ceramic design methodologies. The AlliedSignal/Garrett Model 331-200[CT] Auxiliary Power Unit (APU) is being used as a ceramics test bed engine. For this program, the APU First-stage turbine blades and nozzles were redesigned using ceramic materials, employing the design methods developed during the earlier DOE/NASA funded Advanced Gas Turbine (AGT) and Advanced Turbine Technologies Application Project (ATTAP) programs. The present program includes ceramic component design, fabrication, and testing, including component bench tests and extended engine endurance testing and field testing. These activities will demonstrate commercial viability of the ceramic turbine application. In addition, manufacturing process scaleup for ceramic components to the minimum level for commercial viability will be demonstrated. Significant progress has been made during the past year. Engine testing evaluating performance with ceramic turbine nozzles has accumulated over 910 hours operation. Ceramic blade component tests were performed to evaluate the effectiveness of vibration dampers and high-temperature strain gages, and ceramic blade strength and impact resistance. Component design technologies produced impact-resistance design guidelines for inserted ceramic axial blades, and advanced the application of thin-film thermocouples and strain gages on ceramic components. Ceramic manufacturing scaleup activities were conducted by two ceramics vendors, Norton Advanced Ceramics (East Granby, CT) and AlliedSignal Ceramic Components (Torrance, CA). Following the decision of Norton Advanced Ceramics to leave the program, a subcontract was initiated with the Kyocera Industrial Ceramics Company Advanced Ceramics Technology Center (Vancouver, WA). The manufacturing scaleup program emphasizes improvement of process yields and increased production rates. Work summarized in this paper was funded by the U.S. Dept. Of Energy (DOE) Office of Transportation Technologies, part of the Turbine Engine Technologies Program, and administered by the NASA Lewis Research Center, Cleveland, OH under Contract No. DEN3-335.
5
Schenk, Bjoern. « Ceramic Gas Turbine Technology Development ». Dans ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-315.
Texte intégralRésumé :
AlliedSignal Engines is addressing the critical concerns that are slowing commercialization of structural ceramics in gas turbines. The 331-200[CT] auxiliary power unit (APU) test bed features ceramic first-stage nozzles and blades. Fabrication of ceramic components provides manufacturing process demonstration scale-up to the minimum levels needed for commercial viability. On-site endurance tests are demonstrating component reliability, and additional field testing in APUs onboard commercial aircraft and stationary industrial engines is planned. Manufacturing scale-up activities showed significant progress during 1998. Subcontractors AlliedSignal Ceramic Components (Torrance, CA) and Kyocera Industrial Ceramics Corporation (Vancouver, WA) transitioned process refinements to full demonstration. Both suppliers achieved demonstration capability of ceramic nozzle production at the rate of 100 pieces/month. These suppliers are also developing fixed processes to fabricate ceramic integrally-bladed turbine rotor disks (“blisks”). Ceramic design technology advanced, and 776 hours engine operational testing of a ceramic blisk were successfully completed. Ceramic turbine nozzles were readied for planned field demonstrations, with 2.213 hours of engine endurance testing completed. High-temperature ceramic material tests in the cyclic oxidation test rigs were initiated, to establish functional operating temperature limits for current silicon nitride materials in gas turbine environments. This work was funded as part of the Turbine Engine Technologies Program by the U.S. Dept. of Energy Office of Transportation Technologies under Contract No. DE-AC02-96EE50454.
6
Nagamatsu, Soichi, Kazuyuki Mizuhara, Yukio Matsuda, Akio Iwanaga et Shoji Ishiwata. « Current Status of Industrial and Automotive Ceramic Gas Turbine R&D in Japan ». Dans ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/91-gt-101.
Texte intégralRésumé :
The current status of Japan’s national Ceramic Gas Turbines (CGTs) projects is overviewed. The Japanese Ministry of International Trade and Industry (MITI) is conducting two national R&D projects on CGT. These include a project on 300kW industrial CGTs for co-generation and mobile power generation use and a project on 100kW CGT for automotive use. The 300kW project was started in 1988, and is scheduled to develop three kinds of CGTs over nine years. The New Energy and Industrial Technology Development Organization (NEDO) is the main contractor, and three groups of private industries are sub contractors. Three national research institutes are involved in the project to conduct supportive research of ceramic materials and engine components. The 100kW project has started in 1990, and is scheduled to develop a single shaft automotive CGT over seven years. Petroleum Energy Center (PEC) and JARI are the main contractors with the cooperation of several petroleum and automotive companies. The goals for the two projects are 42% and higher for thermal efficiency at a turbine inlet temperature of 1350C. Such targets could not be achieved without applying high temperature ceramics to the engine components. Therefore many R&D objectives are directed towards developing the ceramic components which have a higher flexure strength and fracture toughness. Currently, 300kW base metal gas turbine engines are being developed to prove the design concepts. Blade shapes suitable to ceramics are being studied by the FEM method. Forming and manufacturing large components are also being studied, and some ceramics components have been successfully made.
7
Jimenez, Oscar, John McClain, Bryan Edwards, Vijay Parthasarathy, Hamid Bagheri et Gary Bolander. « Ceramic Stationary Gas Turbine Development Program — Design and Test of a Ceramic Turbine Blade ». Dans ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-529.
Texte intégralRésumé :
The goal of the Ceramic Stationary Gas Turbine (CSGT) Development Program, under the sponsorship of the United States Department of Energy (DOE), Office of Industrial Technologies (OIT), is to improve the performance (fuel efficiency, output power, and exhaust emissions) of stationary gas turbines in cogeneration through the selective replacement of hot section components with ceramic parts. This program, which is headed by Solar Turbines Incorporated and supported by various suppliers, and national research institutes, includes detailed engine and component design, procurement, and field testing. A major challenge in the successful introduction of ceramic parts into a gas turbine is the design of the interface between the ceramic parts and metallic hardware. A turbine blade, which incorporated a dovetail root, was designed with such considerations. A relatively thin compliant layer between the ceramic-metallic loading surface was considered for equalizing pressure face load distributions. Five monolithic siliocn nitride ceramic materials were considered: AS800 and GN10, AlliedSignal Ceramic Components; NT164, Norton Advanced Ceramics; SN281 and SN253, Kyocera Industrial Ceramics Corporation. The probability of survival using NASA/CARES for 30,000 hours of engine operation was calculated for each material. The blade frequencies, stresses, and temperatures were predicted. The influence of the dovetail angle was also analyzed to determine the most optimum configuration. Prior to engine installation all blades underwent extensive nondestructive evaluation and spin proof testing. This paper will review the design, life prediction, and testing of the first stage ceramic turbine blade for the Solar Turbines Centaur 5OS engine.
8
Easley, Michael L., Bjoern Schenk et Hongda Cai. « Ceramic Gas Turbine Technology Development ». Dans ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-553.
Texte intégralRésumé :
AlliedSignal Engines is addressing critical concerns slowing commercialization of structural ceramics in gas turbines. The AlliedSignal 331-200[CT] APU test bed features ceramic first-stage nozzles and blades. Fabrication of ceramic components provides manufacturing process demonstration scale-up to minimum levels for commercial viability. Endurance tests and field testing in commercial aircraft will demonstrate component reliability. Manufacturing scale-up activities showed significant progress in 1997. Subcontractors AlliedSignal Ceramic Components (CC, Torrance, CA) and Kyocera Industrial Ceramics Corporation (KICC, Vancouver, WA), transitioned process refinements to demonstration. CC initiated trial production of 100 nozzles/month. These suppliers are also developing fixed processes to fabricate ceramic integrally-bladed turbine rotors (“blisks”). Ceramic design technology advanced with carbon particle impact testing supporting impact model verification, and 300 hours successful engine testing of longer-life inserted blade attachment compliant layers. Ceramic turbine nozzles were readied for planned field demonstrations with 473 hours of engine testing. This work was funded as part of the Turbine Engine Technologies Program by the DoE Office of Transportation Technologies under Contract No. DE-AC02-96EE50454.
9
Easley, Michael L., Bjoern Schenk et Hongda Cai. « Ceramic Gas Turbine Technology Development ». Dans ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-554.
Texte intégralRésumé :
AlliedSignal Engines is addressing critical concerns slowing commercialization of structural ceramics in gas turbines. The AlliedSignal 331-200[CT] APU test bed features ceramic first-stage nozzles and blades. Fabrication of ceramic components provides manufacturing process demonstration scale-up to minimum levels for commercial viability. Endurance tests and field testing in commercial aircraft will demonstrate component reliability. Manufacturing scale-up activities showed significant progress in 1997. Subcontractors AlliedSignal Ceramic Components (CC, Torrance, CA) and Kyocera Industrial Ceramics Corporation (KICC, Vancouver, WA), transitioned process refinements to demonstration. CC initiated trial production of 100 nozzles/month. These suppliers are also developing fixed processes to fabricate ceramic integrally-bladed turbine rotors (“blisks”). Ceramic design technology advanced with carbon particle impact testing supporting impact model verification, and 300 hours successful engine testing of longer-life inserted blade attachment compliant layers. Ceramic turbine nozzles were readied for planned field demonstrations with 473 hours of engine testing. This work was funded as part of the Turbine Engine Technologies Program by the DoE Office of Transportation Technologies under Contract No. DE-AC02-96EE50454.
10
Burakov, B., V. Gribova, A. Kitsay, M. Ojovan, N. C. Hyatt et M. C. Stennett. « Synthesis of Crystalline Ceramics for Actinide Immobilisation ». Dans The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7047.
Texte intégralRésumé :
Methods for the synthesis of ceramic wasteforms for the immobilization of actinides are common to those for non-radioactive ceramics: hot uniaxial pressing (HUP); hot isostatic pressing (HIP); cold pressing followed by sintering; melting (for some specific ceramics, such as garnet/perovskite composites). Synthesis of ceramics doped with radionuclides is characterized with some important considerations: all the radionuclides should be incorporated into crystalline structure of durable host-phases in the form of solid solutions and no separate phases of radionuclides should be present in the matrix of final ceramic wasteform; all procedures of starting precursor preparation and ceramic synthesis should follow safety requirements of nuclear industry. Synthesis methods that avoid the use of very high temperatures and pressures and are easily accomplished within the environment of a glove-box or hot cell are preferable. Knowledge transfer between the V. G. Khlopin Radium Institute (KRI, Russia) and Immobilisation Science Laboratory (ISL, UK) was facilitated in the framework of a joint project supported by UK Royal Society. In order to introduce methods of precursor preparation and ceramic synthesis we selected well-known procedures readily deployable in radiochemical processing plants. We accounted that training should include main types of ceramic wasteforms which are currently discussed for industrial applications.
Rapports d'organisations sur le sujet "Ceramica industriale"
1
Gonzalez, J. M., J. L. Ferri et W. J. Rebello. Industrial operating experience of the GTE ceramic recuperator. Office of Scientific and Technical Information (OSTI), juin 1990. http://dx.doi.org/10.2172/6516673.
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2
Caplan, M., R. Tandon et R. Callis. Microwave Sintering of Ceramic Materials for Industrial Application Final Report CRADA No. TC-1116-95. Office of Scientific and Technical Information (OSTI), octobre 2017. http://dx.doi.org/10.2172/1406412.
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Gregory Corman, Krishan Luthra, Jill Jonkowski, Joseph Mavec, Paul Bakke, Debbie Haught et Merrill Smith. Melt Infiltrated Ceramic Matrix Composites for Shrouds and Combustor Liners of Advanced Industrial Gas Turbines. Office of Scientific and Technical Information (OSTI), janvier 2011. http://dx.doi.org/10.2172/1004879.
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