制备工艺对AgCuO电接触材料组织和电寿命的影响  

Effects of Preparation Method on Microstructure and Electrical Contact Performance for AgCuO Composites

作　　者：周晓龙[1] 曹建春[2] 陈敬超[1] 张昆华[3] 甘国友[2] 杜焰[1] 李晓林[2] 

机构地区：[1]昆明理工大学云南省新材料制备与加工重点实验室,云南昆明650093 [2]昆明理工大学材料与冶金工程学院,云南昆明650093 [3]昆明贵金属研究所,云南昆明650221

出　　处：《贵金属》2005年第3期25-29,共5页Precious Metals

基　　金：国家科技攻关项目(2001BA326C)

摘　　要：研究了用2种方法制备的AgCuO材料的组织形貌,发现在反应合成法制备的AgCuO材料中,生成的CuO颗粒较细小,并沿着Ag颗粒的边界分布;而粉末冶金法获得的AgCuO材料发生CuO颗粒的团状聚集,且孔隙较多。通过对接触电寿命的测试,结果表明反应合成法得到的AgCuO材料的电寿命是粉末冶金法制备的2倍。In the present paper, the microstructure difference of AgCuO composite materials prepared by reactive synthesis and powder metallurgy was studied. It was found that the particles of copper oxide distributed in the silver matrix was smaller and finer in the AgCuO materials prepared by reactive synthesis, whereas the distribution of copper oxide particles was inclined to agglomerate gather in the AgCuO materials prepared by powder metallurgy. The service life test showed AgCuO material prepared by reactive synthesis was two times longer than that prepared by powder metallurgy.

关 键 词：电寿命 材料组织 制备工艺 电接触 反应合成法 粉末冶金法 组织形貌 CUO 颗粒 

分 类 号：TG665[金属学及工艺—金属切削加工及机床] TM572.2[电气工程—电器]