Sintering technology of Ti(C, N) base cermets
The variations of chemical compositions, phases, microstructure evolution and shrinking of cermets compact debinded in H2 or in vacuum and sintered subsequently in vacuum were studied systematically using chemical analysis, back scattering scanning electron microscopy (SEM), and X-ray diffractometry (XRD). The total carbon of cermets debinded in H2 is lower than that debinded in vacuum by 0.4%-0.5%. The contents of carbon and oxygen are decreased sharply when being sintered at 1 100-1 300 ℃. The decomposition reaction of nitrogen is conducted sharply at 1 300 ℃. However, the decomposition of nitrogen is inhibited while the liquid phase appears, and then begins again above 1 500 ℃. The solution reaction of TaC and Mo2C into ring phase starts at 1 200 ℃, and WC into ring phase at 1 300 ℃ is finished. Therefore, the heating rate during sintering of cermets between 900 ℃ and 1 350 ℃ is important.
Ti(C, N) cermets sintering composition shrinkage microstructure
ZHOU Shu-zhu TAN Jin-hao PENG Wei-zhen WANG She-quan LI Ping
Zhuzhou Cemented Carbide Group Corp. Ltd, Zhuzhou 412000, China School of Metallurgical Engineering, School of Metallurgical Engineering, Hunan University of Technology, Zhuzhou 412008, China Zhuzhou Cemented Carbide Group Corp. Ltd, Zhuzhou 412000, China
国际会议
2009 Frontier Symposium of China Postductors on Materrials Science(2009年中国博士后材料科学前言论坛)
长沙
英文
696-700
2009-11-22（万方平台首次上网日期，不代表论文的发表时间）