纤维结构钨铜触头材料电性能的研究  

Electrical Performance of Fiber-structured W-Cu Contact Materials

作　　者：史毅敏[1] 昝会萍[1] 

机构地区：[1]西安建筑科技大学理学院,陕西西安710055

出　　处：《铸造技术》2011年第12期1680-1682,共3页Foundry Technology

摘　　要：采用真空熔渗法制备了纤维结构钨铜触头材料,对其耐电压强度、截流值和电弧侵蚀进行了测试和分析。结果表明,随着击穿次数的增多,耐压强度逐步升高、然后基本趋于稳定;放电曲线电流波动幅度较小,说明在小电流下的电弧稳定性高,电弧过零时的截流值降低;同时,从侵蚀形貌能够看出纤维结构的触头材料蚀坑小,且只有少量的液滴喷溅,表现出良好的抗侵蚀性能。The fiber-structured W-Ou contact material was produced by infiltration in vacuum sintering furnace. ＂The dielectric strength, chopping current and arc erosion was measured and analyzed. The results show that the dielectric strength gradually increases, then tends stabilization; current volatile is less in discharge curve, arc stability is high, Chopping current reduces when arc reach zero. It can be observed from the eroding surface in the sample that the fiber-structured tungsten-copper contact materials only have small pitting and splashing droplets, which exhibits well anticorrosion properties.

关 键 词：纤维结构 钨铜触头材料 耐电压强度 截流值 电弧侵蚀 

分 类 号：TM24[一般工业技术—材料科学与工程]