合金元素对CuCr触头材料不同温度下真空耐电压强度的影响  

作　　者：王亚平[1] 丁秉钧[1] 周敬恩[1] 

机构地区：[1]西安交通大学,710049

出　　处：《高压电器》1998年第3期13-16,共4页High Voltage Apparatus

基　　金：国家自然科学基金资助项目;国家粉末冶金重点实验室资助项目

摘　　要：研究了合金元素W、Co对真空中CuCr触头材料在不同温度下的真空耐电压强度的影响。研究结果表明,高温时CuCr材料的耐电压能力比室温耐电压能力有所降低,合金元素W、Co通过弥散强化、固溶强化和增大了CuCr的表面张力而提高了CuCr材料室温及高温时的耐电压能力。The effect of alloying elements W, Co on the vacuum dielectric strength of CuCr contact materials at different tempratures is investigated. The experimental results show that the voltage withstand capability of CuCr materials at high temperature is lower than that at normal temperature. The addition of the alloying elements increases the voltage withstand capability of CuCr materials at normal and higher temperature by the dispersive and soluble strengthening Cr phase as well as by improving the surface tension of CuCr.

关 键 词：合金 触头材料 耐受电压 真空断路器 

分 类 号：TM561.203[电气工程—电器]