Influence of Mo on the microstructure and mechanical properties of TiC-based cermets
来源期刊：Rare Metals2010年第4期
论文作者：WANG Xingqing,HE Xiaoxiang,and GUO Hailiang School of Materials Science and Engineering,Shanghai University,Shanghai ,China
文章页码：346 - 350
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.
WANG Xingqing,HE Xiaoxiang,and GUO Hailiang School of Materials Science and Engineering,Shanghai University,Shanghai 200072,China
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.
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