稀土和稀土氧化物对钨铜电触头材料性能影响的对比分析  

Influence of rare earth and its oxide on properties of W-Cu alloy

作　　者：陈勉之[1] 陈文革[1,2] 戴广乾[1] 

机构地区：[1]西安理工大学材料科学与工程学院,西安710048 [2]西北工业大学材料科学与工程学院,西安710072

出　　处：《粉末冶金技术》2008年第6期417-420,425,共5页Powder Metallurgy Technology

基　　金：中国博士后基金项目(20060401006)

摘　　要：利用粉末冶金技术制备出添加不同含量稀土和稀土氧化物的W-Cu电触头材料,比较稀土和稀土氧化物对W-Cu合金物理性能、力学性能的影响,同时利用金相显微镜观察组织形貌。结果表明,添加稀土单质较添加稀土氧化物更能提高W-Cu材料的相对密度、硬度及导电性能;而且W-Cu合金中最适宜的稀土添加量(质量分数)为3%。The W-Cu electrical contact materials doping different content of rare earth and its oxide were produced by powder metallurgy technology. The physical and mechanical properties of W-Cu alloy with rare earth and its oxide were tested. And the microstructure was observed by metalloscope. The results show that the relative density, hardness and conductivity of the W-Cu samples are greatly improved when the rare earth element rather than its oxide is added. It is also proved that the appropriate rare earth additive content in W-Cu alloy is about 3（weight） %.

关 键 词：钨铜合金 稀土 电触头材料 粉末冶金 

分 类 号：TM241[一般工业技术—材料科学与工程] O614.33[电气工程—电工理论与新技术]