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Vol.42, No.2, 143 ~ 151, 2004
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| Title |
| Synthesis of Titanium Composites by the Reaction between Titanium Powder Compacts and Hydrocarbon Gas |
| 김용현 Kim Yong Hyeon , 김용진 Kim Yong Jin , 양동완 Yang Dong Wan , 이성규 Lee Seong Gyu , 안재환 An Jae Hwan , 정형식 Jeong Hyeong Sig |
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| Abstract |
| Titanium-base composites with TiC particulates were synthesized by reacting mixed elemental titanium alloy powder compacts with hydrocarbon gas such as propane gas, and sintered in a vacuum. Titanium carbide was formed as a thin layer around the surface of each titanium particle in the compact during the reaction. Various transient carbides and hydride were also formed during the reaction but completely disappeared during the high temperature vacuum sintering, leaving only titanium carbide globules. The density and structure of the sintered composites were significantly affected by the initial titanium powder size and the reaction parameters. The volume percent of the titanium carbide could be precisely controlled by adjusting the reaction temperature and time. The rate of titanium carbide formation increases with the reaction temperature but shows parabolic behavior with time. Based on the results, a model for the titanium carbide formation inside a titanium powder compact was proposed. |
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| Key Words |
| Titanium base composite, Titanium carbide, Propane gas, Reaction synthesis, Sintering |
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