Relevant bibliographies by topics / Titanium Carbonitride

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Titanium Carbonitride'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 May 2022

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Journal articles on the topic "Titanium Carbonitride"

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Lou, Yan Zhi. "HREM Study on Heterogeneous Formation of Titanium Carbonitride in Ti Microalloyed Steel." Applied Mechanics and Materials 456 (October 2013): 541–44. http://dx.doi.org/10.4028/www.scientific.net/amm.456.541.

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HREM study on Ti-carbonitride particles in Ti-microalloyed steels has been carried out. It shows that many tiny Ti-carbonitride precipitates formed on nitride, sulfide or oxide particles. These carbonitrides possess twin relationship or have continuous interface with the particles existed already. The results imply that the twinning and epitaxial growth may be the important mechanisms for Ti-carbonitride formation in the steels. These nucleation mechanisms can highly lower the interfacial energy of new precipitates, resulting in the nucleation rate greatly increased. Therefore, the mechanical properties of the Ti-microalloyed steels are effectively improved.
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Korchagin, Michail A., Dina V. Dudina, Alexander I. Gavrilov, Boris B. Bokhonov, Natalia V. Bulina, Alexey V. Panin, and Nikolay Z. Lyakhov. "Combustion of Titanium–Carbon Black High-Energy Ball-Milled Mixtures in Nitrogen: Formation of Titanium Carbonitrides at Atmospheric Pressure." Materials 13, no. 8 (April 11, 2020): 1810. http://dx.doi.org/10.3390/ma13081810.

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In this work, titanium carbonitrides were synthesized by self-propagating high-temperature synthesis (SHS) in nitrogen. For the first time, the synthesis of titanium carbonitrides by combustion was realized in nitrogen at atmospheric pressure. The synthesis was carried out by subjecting high-energy ball-milled titanium–carbon black powder mixtures to combustion in a nitrogen atmosphere. The influence of the ball milling time on the phase composition of the products of SHS conducted in the Ti+0.3C reaction mixture was studied. It was found that the titanium–carbon black mixtures need to be milled for a certain period of time for the combustion synthesis to yield a single-phase carbonitride product.
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Gong, Xi Na, Jin Feng Sun, Kun Quan, and Yong Qiang Meng. "Synthesis and Application of Titanium Carbonitride." Advanced Materials Research 634-638 (January 2013): 2373–77. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.2373.

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The characteristics of each method for synthesis titanium carbonitride were introduced. The property of titanium carbonitride synthesized by each method is affected by raw materials, parameters and external conditions. The application of titanium carbonitride is mainly on cermets cutting tools, it also exhibits a lot of good properties on coating materials, superhard cutting tools and multi phase ceramics.
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Akhmetov, A. V., G. D. Kusainova, S. N. Sharkaev, K. M. Muskenova, V. B. Basin, and T. S. Sejsimbinov. "A concept of control of processes of vanadium, niobium and titanium carbonitrides forming by consecutive alloying." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information, no. 9 (September 25, 2018): 48–57. http://dx.doi.org/10.32339/0135-5910-2018-9-48-57.

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Base on laboratory and industrial experiments, as well as subsequent studies of the microstructure of steel samples alloyed with a certain sequence by vanadium, niobium, and titanium, a concept including compliance with the order of those microalloying elements introducing into steel developed and justified. According to the concept, the sequence of introduction is determined by the difference in the degree of their thermodynamic affinity to the nitrogen and carbon dissolved in the steel.Investigations of the microstructure of experimental microalloyed samples by an optical microscope, with a magnification x250, showed the most significant grain refinement with a consecutive additive – first vanadium with niobium and after 10 minutes of holding – titanium.The efficiency of the developed alloying method for the advanced formation of vanadium and niobium carbonitrides was evaluated by studies with the Mira3 Tescan electron scanning microscope having an X-ray energy dispersive microanalysis system X-Act (Oxford Instruments). When studying the compositions and the form of carbonitrides discovered in steel samples alloyed with a different sequence of additives, it was established, that during simultaneous additive of titanium, vanadium and niobium into steel, titanium carbonitrides account for a majority, while vanadium and niobium carbonitrides are not actually formed or are represented by single inclusions. Conversely, in steel samples alloyed with a consecutive additive to steel, first vanadium with niobium and later titanium, carbonitride of vanadium and niobium inclusions prevail. In this case, titanium carbonitrides are represented only by single and fine inclusions. Thus, first introducing of vanadium and niobium, allows them to react fully with stoichiometrically insufficient concentrations of nitrogen and carbon, ahead of the formation of titanium nitrides.Based on the results of the research in JSC “ArcelorMittal Temirtau”, using the developed concept of consecutive alloying by carbonitride-forming elements, the technology of 09G2FB grade steel production with a ferrite-bainite structure developed and implemented, fully meeting API Spec 5L requirements for steel of strength category X80.
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Eslamloo-Grami, M., and Z. A. Munir. "The mechanism of combustion synthesis of titanium carbonitride." Journal of Materials Research 9, no. 2 (February 1994): 431–35. http://dx.doi.org/10.1557/jmr.1994.0431.

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Titanium carbonitride, TiC0.5N0.5, is synthesized directly by a self-propagating reaction between titanium and carbon in a nitrogen atmosphere. Complete conversion to the carbonitride phase is achieved with the addition of TiN as diluent and with a nitrogen pressure ≥0.6 MPa. Thermodynamic phase-stability calculations and experimental characterizations of quenched samples support a proposed mechanism in which the formation of the carbonitride is a two-step process. The first step involves the formation of the nonstoichiometric carbide, TiC0.5, and is followed by the formation of the product by the incorporation of nitrogen in the defect-structure carbide to form the carbonitride solid solution.
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Li, J. T., W. S. Liu, Y. L. Xia, and C. C. Ge. "Combustion co-synthesis of Si3N4-based in situ composites." Journal of Materials Research 11, no. 12 (December 1996): 2968–70. http://dx.doi.org/10.1557/jmr.1996.0377.

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The feasibility of synthesizing silicon nitride-silicon carbide-titanium carbonitride composites by combustion reactions is demonstrated. With titanium carbonitride taken to be an ideal solid solution, its composition is determined as TiC0.36N0.64. Thermodynamic analysis supports the experimental results.
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Ermakov, A. N., I. G. Grigorov, O. N. Ermakova, Yu G. Zainulin, V. G. Pushin, and L. I. Yurchenko. "Microcomposite hard titanium carbonitride-titanium nickelide cermets." Russian Metallurgy (Metally) 2010, no. 7 (July 2010): 630–34. http://dx.doi.org/10.1134/s0036029510070098.

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Lee, Dong-Won, Jae-Hwan Ahn, and Hyungsik Chung. "Synthesis and nitrogen stability of ultrafine titanium carbonitride particles." Journal of Materials Research 22, no. 1 (January 2007): 233–37. http://dx.doi.org/10.1557/jmr.2007.0024.

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The ultrafine titanium carbonitride particles (TiC0.5N0.5) with 100 nm in mean size was successfully synthesized by nitridation treatment at ordinary temperatures, 1373∼1473 K of the nanostructured half-stoichiometric titanium carbide (TiC0.5) particles, which were produced by the magnesium reduction of gaseous TiCl4+1/4C2Cl4. In addition, the nitrogen stability for the produced titanium carbonitride particles at various temperatures and vacuum conditions was investigated experimentally and compared with values calculated by an ideal solution model.
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Liu, N., Q. M. Zeng, and X. M. Huang. "Microstructure in titanium carbonitride cermets." Materials Science and Technology 17, no. 9 (September 2001): 1050–54. http://dx.doi.org/10.1179/026708301101511167.

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Bergmann, E., H. Kaufmann, R. Schmid, and J. Vogel. "Ion-plated titanium carbonitride films." Surface and Coatings Technology 42, no. 3 (December 1990): 237–51. http://dx.doi.org/10.1016/0257-8972(90)90156-7.

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Dissertations / Theses on the topic "Titanium Carbonitride"

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Zhu, Bo, and lswan@deakin edu au. "Tribology of lubricated nitrocarburised and titanium carbonitride surfaces." Deakin University. School of Engineering and Technology, 2004. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20061024.112959.

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In the current work, two different coatings, nitrocarburised (CN) and titanium carbonitride (TiCN) on M2 grade high speed tool steel, were prepared by commercial diffusion and physical vapour deposition (PVD) techniques, respectively. Properties of the coating were characterised using a variety of techniques such as Glow-Discharge Optical Emission Spectrometry (GD-OES) and Scanning Electron Microscopy (SEM). Three non-commercial, oil-based lubricants with simplified formulations were used for this study. A tribological test was developed in which two nominally geometrically-identical crossed cylinders slide over each other under selected test conditions. This test was used to evaluate the effectiveness of a pre-applied lubricant film and a surface coating for various conditions of sliding wear. Engineered surface coatings can significantly improve wear resistance of the tool surface but their sliding wear performances strongly depend on the type of coating and lubricant combination used. These coating-lubricant interactions can also have a very strong effect on the useful life of the lubricant in a tribological system. Better performance of lubricants during the sliding wear testing was achieved hen used with the nitrocarburised (CN) coating. To understand the nature of the interactions and their possible effects on the coating-lubricant system, several surface analysis techniques were used. The molecular level investigation of Fourier Transform Infrared Spectroscopy (FTIR) revealed that oxidative degradation occurred in all used oil-based lubricants during the sliding wear test but the degradation behaviour of oil-based lubricants varied with the coating-lubricant system and the wear conditions. The main differences in the carbonyl oxidation region of the FTIR spectra (1900-1600 cm-1) between different coating-lubricant systems may relate to the effective lifetime of the lubricant during the sliding wear test. Secondary Ion Mass Spectrometry (SIMS) depth profiling shows that the CN coating has the highest lubricant absorbability among the tested tool surfaces. Diffusion of chlorine (C1), hydrogen (H) and oxygen (O) into the surface of subsurface of the tool suggested that strong interactions occurred between lubricant and tool surface during the sliding wear test. The possible effects of the interactions on the performance of whole tribological system are also discussed. The study of Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS) indicated that the envelope of hydrocarbons (CmHn) of oil lubricant in the positive TOF-SIMS spectra shifted to lower mass fragment after the sliding wear testing due to the breakage of long-chain hydrocarbons to short-chain ones during the degradation of lubricant. The shift of the mass fragment range of the hydrocarbon (CmHn) envelope caries with the type of both tool surface and lubricant, again confirming that variation in the performance of the tool-lubricant system relates to the changes in surface chemistry due to tribochemical interactions at the tool-lubricant interface under sliding wear conditions. The sliding wear conditions resulted in changes not only in topography of the tool surface due to mechanical interactions, as outlined in Chapter 5, but also in surface chemistry due to tribochemical interactions, as discussed in Chapters 6 and 7.
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El, Azhari Idriss. "Multiscale mechanical and microstrutural characterization of titanium and zirconium carbonitride hard coatings." Doctoral thesis, TDX (Tesis Doctorals en Xarxa), 2020. http://hdl.handle.net/10803/669821.

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The present dissertation is an in-depth investigation from the macro to atomic scale of industrial wear-resistant CVD hard coatings deposited on cemented carbides for cutting tool applications. Micro-compression tests at the micro-scale and contact damage induced by means of millimetric spherical indentation were deployed to study deformation mechanisms of two systems consisting of a defined cemented carbide substrate coated with two different films: Ti(C,N) and Zr(C,N). The latter system exhibited a superior tool life in comparison to the conventional Ti(C,N) one. Several characterization techniques were used: confocal microscopy, scanning electron microscopy, focused ion beam, electron back scattered diffraction, X-ray synchrotron and atom probe tomography. It was found that remnant structural integrity related to the absence of an extensive cracking network for Zr(C,N) - in the as deposited state - is one of the main reasons that could explain better performance in interrupted cutting. Adapted coefficient of thermal expansion toward the substrate, plastic deformation and better cohesive strength at the grain boundaries (which renders more toughness) are factors that contribute not only to this preserved structural integrity but also to the extended tool life during in-service interrupted cutting.
En esta tesis doctoral se presenta una investigación extensa y detallada, desde la escala macroscópica hasta la atómica, de recubrimientos industriales - duros y resistentes al desgaste - depositados por CVD sobre carburos cementados para su aplicación como herramientas de corte. El estudio se realizó en dos sistemas recubiertos empleando diferentes capas cerámicas - Ti(C,N) y Zr(C,N) - pero sin variar el carburo cementado empleado como sustrato. Los mecanismos de deformación de ambos sistemas se evaluaron mediante ensayos de micro-compresión de pilares, así como de indentación esférica (con bolas de radios milimétricos), estos últimos buscando inducir daño de forma controlada a nivel superficial y subsuperficial. El sistema recubierto con la capa de Zr(C,N) exhibió una vida útil superior al más convencional - Ti(C,N). El estudio incluyó la implementación de varias técnicas de caracterización: microscopía confocal, microscopía electrónica de barrido, haz de iones focalizados, difracción de electrones retrodispersados, sincrotrón de rayos X, y tomografía con sonda atómica. Se encontró que la elevada integridad estructural remanente relacionada con la ausencia de fisuración interconectada en el caso de Zr(C,N) – justo después de ser depositado – es alguna de las principales razones para explicar el mayor rendimiento de este sistema recubierto en operaciones de mecanizado que involucran corte interrumpido. La adecuación del coeficiente de expansión térmica, relativo al que exhibe el sustrato, la capacidad de absorber deformación plástica, y la relevante resistencia cohesiva en los bordes de granos (lo que proporciona una mayor tenacidad) son factores que contribuyen no sólo a preservar la integridad estructural, sinó también a prolongar la vida útil de la herramienta durante condiciones de servicio que conlleven corte interrumpido.
Die vorliegende Dissertation ist eine eingehende Untersuchung vom makrobis zu der atomaren Skala von industrieller verschleißfester CVD-Hartschichten auf Hartmetallschneidwerkzeugen abgeschieden. Mikrodruckversuche und Kontaktschädigung ausgelöst durch millimetergenaue Kugel Eindruck wurden eingesetzt, um Verformungsmechanismen von zwei Systemen, bestehend aus einem definierten Hartmetallsubstrat, das mit zwei verschiedenen Schichten beschichtet ist: Ti(C,N) und Zr(C,N). Letzteres System zeigt eine höhere Standzeit als das herkömmliche Ti(C,N). Es wurden eine Vielzahl von Charakterisierungstechniken eingesetzt: Konfokale Mikroskopie, Rasterelektronenmikroskopie, fokussierter Ionenstrahl, Elektronenrückstreubeugung, Synchrotron und Atomsonden- Tomographie. Es wurde festgestellt, dass die erhaltene strukturelle Integrität in Bezug auf das Fehlen eines ausgedehnten Rissnetzwerks für Zr(C,N) - im abgeschiedenen Zustand - einer der Hauptgründe ist, der die bessere Leistung beim unterbrochenen Schnitt Verfahren erklären könnte. Angepasste Wärmeausdehnungskoeffizienten entgegen das Substrat, plastische Verformung und bessere Korngrenzen-Kohäsion (was zu mehr Zähigkeit führt) sind Faktoren, die nicht nur zu dieser erhaltenen strukturellen Integrität beitragen, sondern auch zu einer verlängerten Standzeit beim Fräsen im Einsatz.
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El, Azhari Idriss [Verfasser]. "Multiscale mechanical and microstructural characterization of titanium and zirconium carbonitride hard coatings / Idriss El Azhari." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2019. http://d-nb.info/1216503494/34.

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Bravo, Salazar Jaime Alejandro. "Estudo do processo de fabricação de compósitos AA6061 + TiCN por sinterização com fase líquida e caracterização do produto." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263635.

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Orientadores: Maria Helena Robert, Elisa Maria Ruiz Navas
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
Made available in DSpace on 2018-08-19T00:27:43Z (GMT). No. of bitstreams: 1 BravoSalazar_JaimeAlejandro_D.pdf: 9695376 bytes, checksum: d35ebfbcaf1dac8c6665392b7d784d23 (MD5) Previous issue date: 2007
Resumo: Este trabalho estuda o processo de fabricação de compósitos de matriz de alumínio AA6061 reforçado com TiCN por metalurgia do pó, envolvendo as etapas de mistura de pós, compactação uniaxial e sinterização com fase líquida. Para efeitos de comparação foram produzidos e caracterizados compactados da liga AA6061 sem adição de reforços. Foram investigados os parâmetros de processo: teores de reforço (5% e 10% massa), teor de aditivos Pb e Sn (0,1, 0,15, 0,2 e 0,4% massa), pressão de compactação (400, 600 e 800 MPa), tempos (15, 30, 45 e 60 min) e temperatura de sinterização (590, 600, 610 e 620 ºC). Em cada etapa do processo foram caracterizados os produtos (mistura de pós e compactados); o produto final obtido, após sinterização, foi caracterizado com relação à sua microestrutura, propriedades físicas (densificação e variação dimensional) e mecânicas (resistência à flexão e dureza). Os resultados obtidos mostraram uma grande eficiência do processo na obtenção de compósitos; a adição do teor de reforço de 5%TiCN foi eficiente na promoção de rupturas das camadas de óxidos do pó da liga de alumínio compactado à pressão de 400 MPa, auxiliando a sinterização por difusão da fase líquida formada a partir da fusão de Al+Mg2Si, melhorando a densificação e diminuindo a variação dimensional dos produtos sinterizados. Do ponto de vista metalúrgico, os materiais compósitos obtidos apresentaram microestruturas homogêneas, com uma boa distribuição dos reforços na matriz e relativa diminuição de poros. A adição de Pb e Sn promovem maior eficiência de ativação de mecanismos de sinterização; para compactados produzidos à pressão de 800 MPa, a adição de 0,1% desses elementos já apresentou significativa influência na sinterização. Com relação às propriedades mecânicas e físicas observou-se que a adição de TiCN aumentou quase no dobro de seus valores obtidos quando são comparados com a liga AA6061
Abstract: This work investigates the process of production of composites of the alloy AA6061 reinforced with TiCN particles, by powder metallurgy involving the steps: conventional mixture of powders, compaction by uniaxial cold pressing and sintering with formation of a liquid phase. For comparative analysis it was also produced sintered AA6061 without addition of reinforcements. The following processing parameters were studied: reinforcing particles content (5 and 10 wt%); content of trace elements Pb and Sn (0.1, 0.15, 0.2 0.4 wt%); compaction pressure (from 400, 600 and 800 MPa); time and temperature of sintering (15, 30, 45, 60 min and 590, 600, 610, 620 oC). In each step products were characterized (powder mixture and green compacts); the final sintered product was characterized related to microstructure, physical (densification and dimensional changes) and mechanical (hardness and bending strength) properties. Obtained results showed high efficiency of the applied process to produce reliable composite products; the addition of 5 wt% TiCN was efficient to promote fracture of the oxide layer in the aluminum particles surface during pressing. At sintering temperatures liquid phase is formed by Al+Mg2Si melting and is distributed among particles through the fractures of the oxide layer, improving the material densification and its mechanical properties. Microstructures obtained showed homogeneous distribution of TiCN and reduced porosity, whereas AA6061 alloy microstructure showed higher porosity. Addition of Pb and Sn promoted higher efficiency of sintering mechanisms in compacts submitted to high pressures, leading to enhanced physical and mechanical properties in those materials.
Doutorado
Materiais e Processos de Fabricação
Doutor em Engenharia Mecânica
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Pasqualeti, Aniélli Martini. "Eletrocatalisadores formados por nitretos, carbetos e óxidos metálicos para o eletrodo de oxigênio." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-14062017-102848/.

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O desenvolvimento de eletrocatalisadores eletricamente condutores com alta atividade para a reação de redução de oxigênio (ORR - Oxygen Reduction Reaction) e desprendimento de oxigênio (OER - Oxygen Evolution Reaction) é de extrema importância e interesse para dispositivos de eletro-conversão de energia, como as células a combustível e eletrolisadores, que operam tanto em meio alcalino quanto ácido. Em meio alcalino, é possível o uso de metais não nobres e, assim, são viáveis para o uso em larga escala. Em meio ácido, é necessário o uso de materiais estáveis, uma vez que eles são expostos a um ambiente extremamente corrosivo e à altos potenciais, principalmente durante o processo de liga/desliga do dispositivo. Diante disso, este trabalho foi dividido em três linhas de pesquisa: Parte I - estudos de eletrocatalisadores bifuncionais para a ORR e OER em meio alcalino, sendo eles compostos por espinélios de manganês-cobalto em combinação com nanopartículas de ouro (MnCo2O4/Au). Parte II - estudos de eletrocatalisadores alternativos para a ORR em eletrólito ácido, onde foram considerados carbetos e nitretos de molibdênio (Mo2C-MoN) e, oxinitretos de tântalo (Ta-ON). Parte III - estudo de suportes alternativos ao carbono para a ORR em eletrólito ácido, sendo eles compostos por carbonitretos de tântalo e titânio (Ta-CN e Ti-CN). Os resultados da Parte I para MnCo2O4/Au mostraram que houve um aumento significativo na atividade de MnCo2O4 com a adição de ouro para ambas as reações. Foi possível observar que a combinação de nanopartículas condutoras (ouro) com nanopartículas ativas, mas não condutoras (MnCo2O4), é promissora para o desenvolvimento de eletrocatalisadores ativos para uso como eletrodos de oxigênio. Quanto a Parte II, os materiais compostos por Mo2C-MoN foram obtidos por meio da inserção de carbono e nitrogênio com tratamento térmico, na presença de carbono Vulcan e NH3, em alta temperatura. O material nomeado como MoN + Mo2C (molibdato) foi o que apresentou maior atividade catalítica, o que pôde ser atribuído ao menor tamanho de cristalito, maior quantidade da sua fase MoN e ao efeito sinérgico entre MoN e Mo2C, facilitando a ORR em comparação ao nitreto e carbeto de molibdênio puros. Nesta mesma linha de pesquisa, oxinitretos de tântalo foram sintetizados utilizando ureia como fonte de nitrogênio. Foi observado que Ti-Ta-ON apresentou maior atividade catalítica quando comparado aos demais eletrocatalisadores. Já na Parte III, os resultados para carbonitreto de titânio como suporte para a platina (Pt/Ti-CN) mostraram que, além da sua atividade para a ORR ser semelhante à platina suportada em carbono (Pt/C), ele também se mostrou mais estável que Pt/C após a realização de testes de estabilidade.
The development of conductive electrocatalysts with high activity for the oxygen reduction and evolution reactions (ORR and OER) is of extremely importance for devices that electroconvert energy, such as fuel cells and electrolizers, which work in alkaline and acid media. A substantial amount of metals can be employed in alkaline electrolytes once the latter do not require the use of noble metals. The acid medium asks for stable materials, since they are exposed to a high oxidative environment and potentials during the start-up/shutdown events of the device. On the base of these facts, this research work has been divided into three parts: Part I - bifunctional electrocatalysts studies for the ORR and OER in alkaline electrolyte, the materials were composed of spinel manganese-cobalt oxide combined with gold nanoparticles (MnCo2O4/Au). Part II - studies of alternative electrocatalysts for the ORR in acid electrolyte, which included molybdenum carbides and nitrides (Mo2C-MoN), and tantalum oxynitrides (Ta-ON). Part III - alternative supports to the carbon for the ORR in acid electrolyte, which included tantalum and titanium carbonitrides (Ta-CN and Ti-CN). The results for MnCo2O4/Au, in Part I, showed that the addition of gold on the surface of the oxide improved the latter activity for both reactions. The combination of conductive nanoparticles (gold) with active, but non-conductive, nanoparticles (MnCo2O4) seems promising for the development of active electrocatalysts for the ORR and OER. In Part II, the materials composed of Mo2C-MoN were synthesized through carbon and nitrogen insertion, in a high temperature heat treatment, in the presence of Vulcan carbon and NH3. Among the gotten materials, the so called MoN + Mo2C (molybdate) showed the better electrocatalytic activity for the ORR, which could be attributed to its smaller crystallite size and the greater amount of its MoN phase, along with the synergistic effect between MoN and Mo2C. In this way, tantalum oxynitrides materials were obtained via a urea synthesis. The catalyst referred to as Ti-Ta-ON showed the better ORR activity among all the others studied oxynitrides materials. In Part III, besides the activity for the ORR of platinum supported on titanium carbonitride (Pt/Ti-CN) was similar to the activity of platinum supported on carbon (Pt/C), Pt/Ti-CN was also more stable than the latter, after the stability tests.
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Hassine, Nabile. "Microwave-assisted synthesis of non-oxide ceramic powders." Thesis, University of Nottingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240494.

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Holmes, Melanie. "Electrochemical Behaviour of Ti(C,N) and TiC Cermets." 2012. http://hdl.handle.net/10222/15345.

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Three samples of Ti(C,N) were fabricated with 40 vol.% Ni3Al: Ti(C0.3N07), Ti(C0.5N0.5) and Ti(C0.7N0.3), as well as TiC with 10, 20, 30 and 40 vol.% Ni3Al binder addition by means of melt infiltration and sintering. Each sample was evaluated for density and microstructure before being placed in a flat cell for electrochemical testing. Open circuit potential was evaluated, followed by the application of a cathodic potential, whereby the response was tracked using Corrware corrosion software throughout the duration of potentiodynamic testing. Following corrosion testing, each sample was reevaluated for changes in microstructure and chemical composition. Ti(C,N) samples were found to have adequate resistance to corrosion, with increased resistance with increasing carbon content, however these samples demonstrated a greater frequency of breakdown and repassivation, suggesting a greater susceptibility to corrosion, despite the initial improved resistance. SEM imaging demonstrated significant crevice corrosion throughout. TiC-cermets demonstrated similar results in terms of SEM evaluation of microstructure. TiC-cermets with the lowest binder content (10 vol.% Ni3Al) demonstrated greater initial resistance to corrosion but also had the greatest potential for breakdown.
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Shieh, Jiann, and 謝健. "Nanostructured titanium-aluminum-carbonitride system coatings prepared by plasma enhanced chemical vapor deposition." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/y88qvw.

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博士
國立成功大學
材料科學及工程學系碩博士班
90
Titanium-aluminum-carbonitride system nanostructured coatings are investigated in this study. Firstly the effects of graded interlayer and coffee-bean-like morphology on the preferred orientation of Ti-C-N coatings are discussed. TiN, TiC, and TiCxN1-x were prepared by plasma-enhanced chemical vapor deposition. The results showed that the topography of the TiCxN1-x, which resembled coffee beans, resulted from a twinning core structure that caused the dendritic grain shape and enhanced the (422) texture of TiC0.62N0.38 and TiC0.75N0.25. As graded coating was used as a transition layer, the texture of TiC was changed from (111) to (200), and TiN was changed from (200) to (111) due to the pseudomorphic forces provided by the first layer plus graded layer. The residual stress contributions to this phenomenon are also discussed. Then the nanostructured and the corresponding mechanical behavior of Ti-Al-N coatings are investigated. The phase and microstructure of Ti1-xAlxN deposited were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Film hardness and reduced elastic modulus were measured by nanoindentation interfaced with an atomic force microscopy. High-resolution transmission electron micrograph shows that the grain size of Ti1-xAlxN decreased to less than 10 nm as aluminum contents in the film increased up to the ratio of Al/(Al+Ti)=0.63. The hardness measurement shows that the microstructure feature is the major factor to determine the film hardness. Finally, a new metastable phase of TiAlCN is identified and a new nanocomposite, titanium aluminum carbonitride/amorphous-carbon, is invented using titanium tetrachloride, aluminum trichloride, methane and nitrogen as reactants. In this study hydrogen was used as carrier gases. A substrate temperature of 500 ℃ and an RF power of 100 W were used in all depositions. The films were characterized by X-ray powder diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, and scanning electron microscopy. The results show that nanograins of titanium aluminum carbonitride with B1-NaCl structure are embedded in an amorphous carbon matrix. The coatings have a (200) preferred orientation with columnar cross-section morphology. Mechanical properties were analyzed by nanoindentation and hardness was demonstrated to increase via this microstructure design approach. The effects of microstructure on mechanical properties, especially the high plasticity property at room temperature, are also determined.
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Kasonde, Maweja. "The mechanical alloying of sub-stoichiometric titanium carbonitride-tungsten-aluminium by high energy ball milling." Thesis, 2012. http://hdl.handle.net/10539/11177.

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The transformations occurring in the sub-stoichiometric Ti(C,N) – W - Al system processed by high energy ball mill were investigated. The milling parameters included the milling time and the temperature comprising milling at subzero temperature and above 25°C. Two sub-stoichiometric Ti(C,N) stocks were selected, the Ti(C0.5N0.05) containing more interstitial elements than the Ti(C0.5N0.5)0.6.The transformation stages and mechanisms of alloying are discussed with respect to the changes in crystal structures of the powder constituents. The milling atmosphere had an effect on the lattice strain of milled products, and hence on the kinetics of solid state dissolution between the powder constituents, but it did not affect the fracturing process. The release of the stored crystallite lattice strain energy was the major determinant in mechanical alloying, with particle size reduction playing a necessary, but less significant role. The strain energy and the fine particle size contributed to the increased chemical reactivity with oxygen of the powders milled for shorter times. The affinity of the powders with oxygen decreased after W dissolution in Ti(C,N), and the subsequent decrease in lattice strains. The annealing behaviour of Ti(C0.5N0.05) - 40wt% W and Ti(C0.5N0.5)0.6 - 40wt% W mechanically alloyed powders were investigated using XRD, TEM, SEM and DTA techniques. It was observed that the reaction start and finish temperatures between constituents were lower in the system that had higher residual lattice strains after milling. The compositions of the intermetallic compounds and the solid solutions formed were dependent on the milling conditions and the annealing temperature. Thermal alloying was observed during annealing of Ti(C0.5N0.05) - 40wt% W mechanically alloyed products, whereas de-mixing of W-rich phases from the metastable solid solution occurred during annealing of the Ti(C0.5N0.5)0.6 - 40wt% W milled powders. The effects of Al addition and milling at subzero temperatures on the transformation of Ti(C0.5N0.05)-W powder mixtures were investigated. Addition of Al powder improved the kinetics of solid solution between powder constituents. The effect of Al was ascribed to the increase of lattice strain during short milling time followed of relaxation at longer time, and to the fast diffusion of atoms. Also, it was noticed that the high viscosity of the process control agent could inhibit the alloying process. Multiple three-component compounds could be formed. Aluminium preferably reacted with tungsten. The W(Al,C) and W(Al,Ti) formed were stable, thus solubility of W in Ti(C0.5N0.05) in the presence of Al was limited. The evolution of the morphologies of Ti(C,N)-W mixtures show that fracturing of hard particles dominated in the early stage of milling in the absence of Al, whereas with Al, plastic deformation of particles and cold welding of Ti(C,N) and W particles by the softer Al prevailed at the same time. Longer milling time improved the homogeneity and the formation of nanostructured binder pools in the sintered products. Lower oxygen contents in sintered PcBN were achieved by mechanically alloying Ti(C,N), W and Al in the high energy ball milling stage. Low level of Co in the infiltration layer was also achieved when sintering PcBN with this type of binder. A link was established between the addition of Al at the attrition milling stage and high oxygen content in the sintered PcBN, thus should be avoided. The pressure and temperature applied during sintering or annealing had a strong effect on the compositions and the crystal structures of the phases formed in the mechanically alloyed binder. The lattice strains of the binder and the PcBN were higher in the sintered materials prepared with the Ti(C0.5N0.5)0.6-W binder than in those made using the Ti(C0.5N0.05)-W alloys.
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Бабенкова, Лілія Олександрівна. "Розробка методу визначення нітрогену в дисперсних сполуках титану з нітрогеном." Магістерська робота, 2020. https://dspace.znu.edu.ua/jspui/handle/12345/3911.

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Бабенкова Л. О. Розробка методу визначення нітрогену в дисперсних сполуках титану з нітрогеном : кваліфікаційна робота магістра спеціальності 102 "Хімія" / наук. керівник Н. П. Синяєва. Запоріжжя : ЗНУ, 2020. 57 с.
UA : У роботі 57 сторінок, 7 таблиць, 12 рисунків, використано 51 літературне джерело, з них 13 іноземною мовою. Об’єктом дослідження є дисперсні системи карбонітридів титану різної стехіометрії. Предметом дослідження є дисперсність, температура плавлення (Тпл), маса наважки. Методи досліджень та апаратура метод К’єльдаля, метод відновного плавлення та метод окислювального плавлення в атмосфері інертного газу – аргон; аналітичні терези фірми «Сарторіус», аналізатор фірми LECO, піч яка забезпечує нагрів температури, порцеляновий човник. Метою кваліфікаційної роботи є: створення експресної, надійної, відтворюваної методики визначення Нітрогену в карбонітридах титану. Теоретично та експериментально визначено : загальний вміст Нітрогену методом плавлення в атмосфері інертного газу – аргон. Для забезпечення повноти виділення Нітрогену з пробах рекомендовано лужний плавень NaOH : CaO (1:1, 2:1) та температура плавлення Тпл = 900 ℃ Визначено метрологічні характеристики методики. Доведена правильність та відтворюваність.
EN : In the work 57 pages 7 tables, 12 pictures were used 51 literary sources, including 13 in a foreign language. The object of the disperse systems of titanium carbonitrides. The subject of the development of the dispersion, melting point, the mass of the sample. Research methods and equipment – Kjeldahl method, reductive melting method and oxidative melting method in an inert gas atmosphere - argon; analytical scales of Sartorius firm, LECO analyzer, furnace which provides temperature heating, porcelain shuttle. The purpose of the qualification work is: to create an express, reliable, reproducible method for the determination of Nitrogen in titanium carbonitrides. Theoretically and experimentally determined the the total content of Nitrogen by melting in an atmosphere of inert gas - argon. To ensure the complete release of Nitrogen from the samples, the alkaline melt NaOH: CaO (1: 1, 2: 1) and the melting point T = 900 ℃ are recommended. The metrological characteristics of the method are determined. Proven correctness and reproducibility.
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Book chapters on the topic "Titanium Carbonitride"

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Hugot, F., and M. Desmaison. "Elaboration of Titanium Carbonitride-Nickel and Titanium Carbonitride-TA6V Bonds, Modelling of the Thermomechanical Behaviour." In Metal Matrix Composites and Metallic Foams, 197–201. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527606203.ch35.

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Pastor, H. "Titanium-Carbonitride-Based Hard Alloys for Cutting Tools." In Sintering ’87, 1287–95. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1373-8_217.

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Eslamloo-Grami, M., and Z. A. Munir. "The synthesis of titanium nitride and titanium carbonitride by self-propagating combustion." In The Chemistry of Transition Metal Carbides and Nitrides, 215–32. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1565-7_11.

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Matsubara, Hideaki, and Taketo Sakuma. "Microstructure and Mechanical Properties of Titanium-Carbonitride Base Cermets." In Sintering ’87, 1269–74. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1373-8_214.

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Panasyuk, A. D., A. P. Umansky, S. S. Chuprov, and A. S. Vrublevsky. "Composite Material on the Base of Titanium Carbonitride with Iron-Chromium Binder." In MICC 90, 910–14. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3676-1_172.

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Alexeev, N. V., D. E. Kirpichev, A. V. Samokhin, M. A. Sinayskiy, and Yu V. Tsvetkov. "Nanopowders Synthesis of Oxygen-Free Titanium Compounds—Nitride, Carbonitride, and Carbide in a Plasma Reactor." In Proceedings of the Scientific-Practical Conference "Research and Development - 2016", 469–79. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62870-7_50.

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"Case Study: Titanium Carbonitride-Nickel-Based Cermets." In Tribology of Ceramics and Composites, 377–406. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118021668.ch24.

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Conference papers on the topic "Titanium Carbonitride"

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Bonnot, A. M., H. Belkhir, and D. Pailharey. "Optical Properties Of Titanium And Zirconium Carbonitride Thin Films." In 1986 International Symposium/Innsbruck, edited by Claes-Goeran Granqvist, Carl M. Lampert, John J. Mason, and Volker Wittwer. SPIE, 1986. http://dx.doi.org/10.1117/12.938331.

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Mamaeva, A. A., A. V. Panichkin, A. K. Kenzhegulov, and B. B. Kshibekova. "Deposition of a titanium carbonitride coating by magnetron sputtering on a substrate with a potential voltage." In Challenges of Science. Institute of Metallurgy and Ore Beneficiation, Satbayev University, 2021. http://dx.doi.org/10.31643/2021.16.

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Titanium carbonitride (TiCN) is of high relevance in the field of creating wear-resistant protective coatings in order to ensure maximum wear resistance and service life of parts of friction units. Titanium carbonitride coatings were obtained by magnetron sputtering at various bias substrate in the range from 0 to -130 V with a step of 10 V. The effect of the bias substrate on the deposition rate, phase and elemental composition, and the friction coefficient of the obtained coatings was investigated. As a result of the obtained dependences, the most optimal mode of deposition by the method of reactive magnetron sputtering with a negative bias voltage on the substrate was determined.
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Soni, Sheetal, A. Pandey, A. K. Sinha, and Ratnesh Gupta. "Formation of titanium carbonitride film by laser treatment: Structural and transport properties." In NANOFORUM 2014. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4917959.

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Markov, Yuriy M., and E. Amosov. "Synthesis of composite powders of titanium carbonitride-chromium composition ti0,77cr0,23c0,5n0,5 mode SHS al." In III International scientific conference "Trends in the development of science and education". LJournal, 2015. http://dx.doi.org/10.18411/2015-07-3-1-7-11.

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"The Tribological Properties of Titanium Carbonitride TiCN Coating Lubricated with Non-Toxic Cutting Fluid." In 10th Conference on Terotechnology. Materials Research Forum LLC, 2018. http://dx.doi.org/10.21741/9781945291814-9.

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Chakraborty, Anurag, Forest Thompson, Jason T. Ash, Phil Ahrenkiel, Frank Kustas, and Robert Anderson. "Use of a Trilayer Shell Model to Determine Intrinsic Stress Within Titanium-Silicon Carbonitride Coating." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87929.

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Thin films of titanium-silicon carbonitride (TiSiCN) with titanium adhesion layers were deposited at approximately 280°C on horizontally and vertically-mounted strips of 301-stainless steel by reactive magnetron sputtering. Considerable differences in the mid-deflections and radii of curvature between the vertical and horizontal samples were observed. Cross-sectional characterizations done on a TEM revealed a columnar growth and uniform microstructure. A finite-element model of the tri-layer sandwich structure using Mesh-Tie constraints was developed to estimate the intrinsic stress levels in the overcoat as probable functions of substrate location and orientation. The computational model in the absence of intrinsic stress was validated by analytical expressions for multilayer films. The initial stress state parameter was varied in Abaqus until consistency in curvature-values was achieved with the physical measurement obtained from an optical setup specially-constructed for this purpose. The difference in the S11/S22 principal stresses provided the intrinsic stress estimate. The calculated values of intrinsic stress were then applied to an FEA test model with fixed constraints to computationally determine the stress reduction for individual samples.
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Kuznetsov, Pavel V., Nina K. Galchenko, and Irina V. Belyaeva. "Features of the coating structure with additives of titanium carbonitride nanoparticles and of the 09G2S steel heat affected zone." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON PHYSICAL MESOMECHANICS. MATERIALS WITH MULTILEVEL HIERARCHICAL STRUCTURE AND INTELLIGENT MANUFACTURING TECHNOLOGY. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0034315.

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Galchenko, Nina K., Ksenya A. Kolesnikova, Pavel V. Kuznetsov, Sergey V. Panin, and Viktor P. Samartsev. "Effect of titanium carbonitride and oxynitride nanoparticles on structure and mechanical properties of arc-surfaced coatings formed on 09Mn2Si steel." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON PHYSICAL MESOMECHANICS. MATERIALS WITH MULTILEVEL HIERARCHICAL STRUCTURE AND INTELLIGENT MANUFACTURING TECHNOLOGY. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0034522.

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Swminathan, V. P., Ronghua Wei, and David W. Gandy. "Erosion Resistant Nano Technology Coatings for Gas Turbine Components." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27027.

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Solid particle and liquid particle erosion in the compressor section of gas turbines and steam turbine vanes and blades lead to significant reduction in turbine efficiency over time. This results in increased downtime and operating cost of the power plants. Some of the conventional coatings and erosion protection shields used by the currently available commercial processes have limitations in their temperature and erosion protection capabilities. Under a project funded by the Electric Power Research Institute (EPRI), nano coatings with thickness within 40 microns (about 1.5 mils) have been produced on test samples using a state-of-the-art Plasma Enhanced Magnetron Sputtering (PEMS) technique. Five coatings were selected for the initial screening tests. Titanium silicon carbonitride nano-composite (TiSiCN), stellite and modified stellite, chromium carbide and Ti-TiN nano layered coatings are being studies in this project. The substrate selection is based on some of the alloys currently used in aeroderivative engine compressor blades, land based gas turbine compressor blades and steam turbine blades and vanes. They include titanium alloys and stainless steels. The PEMS coating technique differs significantly from the conventional techniques such as air plasma spray (APS), low-pressure plasma spray (LPPS), diffusion coatings, chemical or physical vapor deposition (CVD or PVD) used on blades and vanes. PEMS method involves a magnetron sputtering process using a vacuum chamber with an independently generated plasma source from which high current density can be obtained. This method used heavy ion bombardment prior to and during deposition to increase the coating adhesion and limit columnar growth in the coatings. Single-layered thick nitrides coatings up to about 80μm and thick carbonitride coatings of TiSiCN about 30μm have been obtained by this process. A novel method using trimethylsilane gas instead of solid targets was successful in producing this nanocomposite. Initial tests conducted on some of the coated titanium alloy samples produced thus far show significant improvement in the erosion resistance in laboratory sand erosion tests. It was observed that TiSiCN exhibited the best low-angle erosion resistance — nearly 25 times higher than the uncoated Ti-6Al-4V and about 5–10 times higher than all other nitrides. This paper covers a brief description of the deposition technology and the properties of the coatings. Scanning Electron Microscopy (SEM) with Energy Dispersive Spectroscopy (EDS), and X-Ray diffraction (XRD) analysis were used to study the microstructure and morphology of these coatings. Nanoindentation was conducted to determine the hardness and Young’s modulus, while sand erosion tests were conducted to rank the erosion resistance of the coatings produced using several processing variables.
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Malshe, Ajay P., Kok E. Khor, and Deepak G. Bhat. "Preliminary Results of Laser-Assisted Cleaning of Alumina Coated Carbide Tool Inserts." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-1154.

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Abstract This paper describes the results of a preliminary investigation of a novel non-contact surface cleaning method for the reclamation of coated cemented carbide cutting tools. Conventional cleaning processes used for cleaning of cutting tools rely either on aqueous methods which are often not very effective, mechanical methods such as grit blasting which can damage the tool cutting edges, or high-temperature chemical stripping methods which significantly reduce the strength and fracture toughness of the tools. In the present work, cobalt-bonded cemented carbide cutting tool inserts coated with titanium carbonitride (TiCN) and alumina (Al2O3) by CVD process were treated by an excimer laser-based technique to effectively remove partially delaminated or poorly bonded coating layers. The goal was to investigate the feasibility of applying a non-contact technique which is environmentally friendly, and is capable of large-scale application and automation. It is postulated that the process works by explosive and thermal shock which essentially delaminate the coating.
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