烧结温度对(Ti,W,Mo)C-Ni金属陶瓷组织与性能的影响  

Effects of Sintering Temperature on the Microstructure and Properties of (Ti,W,Mo)C-Ni Cermet

作　　者：张志力[1] 熊惟皓[1] 张国鹏[1] 

机构地区：[1]华中科技大学材料成形与模具技术国家重点实验室,武汉430074

出　　处：《机械工程材料》2013年第12期46-49,共4页Materials For Mechanical Engineering

基　　金：国家重大专项资助项目(2009ZX04012-022)

摘　　要：通过碳热还原法制备（Ti，W，Mo）C预合金化固溶体粉末，采用粉末冶金法制备（Ti，W，Mo）C-Ni金属陶瓷，研究了烧结温度对金属陶瓷致密性、组织与性能的影响。结果表明：在1410～1470℃范围内，随烧结温度提高，金属陶瓷的硬度提高，致密性先提高后略下降；在1450℃时制备的金属陶瓷晶粒细小、组织均匀致密，呈现最佳综合力学性能，横向断裂强度为1751MPa，硬度为91.3HRA。（Ti,W,Mo）C pre-alloyed solid solution powders were produced by carbothermal reduction method and （Ti,W,Mo）C-Ni cermet was prepared by powder metallurgy method. The effects of sintering temperature on compactness, microstructure and properties of cermet were studied. The results show that in the range of 1 410-- 1 470℃, the compactness of cermet gradually improved and then decreased slightly, and the hardness rose, with the increase of sintering temperature. At 1 450℃, the cermet with homogeneous compact microstructure and fine grains, had the best comprehensive mechanical properties, a transverse rupture strength of 1 751 MPa and a hardness of 91.3 HRA.

关 键 词：(Ti W Mo)C金属陶瓷 烧结温度 组织 性能 

分 类 号：TG148[一般工业技术—材料科学与工程]