Self-propagating high-temperature synthesis and reaction mechanism in Ti-W-C system

被引:0
作者
Li, Jinfeng
Zheng, Ziqiao
He, Guoxin
Tao, Xiaofeng
Zhang, Zhao
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来源
Fenmo Yejin Jishu/Powder Metallurgy Technology | 2000年 / 18卷 / 02期
关键词
Chemical reactions - Combustion - Synthesis (chemical);
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摘要
The effects of W content, Ti powder size and preheating temperature on combustion temperature and combustion velocity in self-propagating high-temperature synthesis (SHS) of Ti-W-C system were investigated. The phase components of SHS were examined. The reaction mechanism was studied. Uniphase (W, Ti)C can be synthesized without being preheated in the condition of W/(Ti+W)&le0.3. Preheating mixtures can accelerate the formation of (W, Ti)C. There are two reaction mechanisms in SHS reaction process, including solution-precipitation and diffusion-solution in solid state.
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页码:83 / 87
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