Influence of Mo on the microstructure and mechanical properties of TiC-based cermets

作     者：WANG Xingqing,HE Xiaoxiang,and GUO Hailiang School of Materials Science and Engineering,Shanghai University,Shanghai 200072,China WANG Xingqing,HE Xiaoxiang,and GUO Hailiang School of Materials Science and Engineering,Shanghai University,Shanghai 200072,China

作者机构：School of Materials Science and Engineering Shanghai University Shanghai China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2010年第29卷第4期

页      面：346-350页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

主　　题：TiC-based cermets Mo effect sintering densification microstructure mechanical properties 

摘      要：The microstructures and mechanics properties of TiC-based cermets composed of TiC, WC, Ni, Co, Mo, and Cr3C2 were investigated. The results show that Mo has a great effect on the sintering densification, microstructures, and mechanical properties. The microstructures and distribution of Mo and Ti in the TiC-based cermets were analyzed. It was indicated that a new phase with Ti, Mo, W, and C was formed on the rim of （Ti,W）C grains by means of an addition of Mo into the TiC-based cermets. The new phase with a surrounding structure was of great aid to improve the wettability of the liquid phase on the solid phase surface of TiC, decrease the porosity and refine the grains of the hard phase, which gave rise to the increase in strength and hardness. The properties of the TiC-based cermets could be further improved to some extent by adding WC, Cr2C3, and Co.