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Li Jingfeng, Zheng Ziqiao, Zhang Zhao, He Guoxin, Tao Xiaofeng. SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS AND REACTION MECHANISM IN Ti-W-C SYSTEM[J]. Powder Metallurgy Technology, 2000, 18(2): 83-87.
Citation: Li Jingfeng, Zheng Ziqiao, Zhang Zhao, He Guoxin, Tao Xiaofeng. SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS AND REACTION MECHANISM IN Ti-W-C SYSTEM[J]. Powder Metallurgy Technology, 2000, 18(2): 83-87.

SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS AND REACTION MECHANISM IN Ti-W-C SYSTEM

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  • Received Date: April 13, 1999
  • The effects of W content, Ti powder size and preheating temperature on combustion temperature and combustion velocity in SHS of Ti-W-C system were investigated. The phase components of SHS products were examined. The reaction mechanism was studied. Uniphase (W,Ti)C can be synthesized without being preheated in the condition of W/(Ti+W)≤0.3. Preheating mixtures can accelerate the formation of (W,Ti)C. There are two reaction mechanisms in SHS reaction process, which are solution-precipitation and diffusion-solution in solid state respectively.
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