稀土对Cu-Cr合金显微组织及电性能影响  

Effect of Rare Earth on Microstructure and Electrical Properties of Cu-Cr Alloy

作　　者：李晓燕[1] 王顺兴[1] 田保红[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《热加工工艺》2008年第10期24-26,共3页Hot Working Technology

基　　金：河南省杰出青年基金资助项目(6521002700);河南省高校创新人才培养工程(豫教高2005-126)

摘　　要：研究了不同稀土元素含量的Cu-Cr触头材料在低真空条件下的电击穿性能,通过对比不同稀土元素含量的Cu-Cr触头材料电击穿前后显微组织的变化,分析了Cu-Cr触头材料的击穿机理。结果表明,稀土元素的加入能显著细化晶粒,改善材料的抗熔焊性,使材料更容易成功开断。The electrical breakdown properties of Cu-Cr contact materials with different content of RE in low vacuum condition were studied. Breakdown mechamics of Cu-Cr contact material with different content of RE were analysed through comparing the variation of microstructure before and after breakdown. The results show that RE can make grain finer, and improve the resisting welding strength, make contact material successfully interrupt easily.

关 键 词：CU-CR 稀土 电击穿 

分 类 号：TG146.11[一般工业技术—材料科学与工程]