| 1 | Effect of VC addition on the microstructure and properties of Ti(C,N)-based nano cermets显示文摘In this paper,Ti(C,N)-based nano cermets were prepared by nano particles,and the effect of VC addition on the microstructure and proper-ties of Ti(C,N)-based nano cermets was investigated.The results showed that there existed black-core grayish-rim structure as well as gray-core grayish-rim structure in VC-doped Ti(C,N)-based nano cermets.With the increase of VC addition,the number of gray cores in-creased,the lattice parameter of Ti(C,N) phase increased,the grain size decreased,the hardness and fracture toughness of Ti(C,N)-based nano cermets were enhanced,and nearly full densification could be achieved.However,excessive addition of VC to 1 wt% resulted in slight decrease in hardness and fracture toughness.Some deep dimples were found in the fracture surface of cermets with VC addition,which cor-responded to ductile fracture. | YING Xiayu XIONG Ji GUO Zhixing CHEN Jianzhong XIONG Sujian YANG Mei FAN Hongyuan | 2011 | Rare Metals2011，30，6： | 7 |
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