银-金属氧化物触头材料电弧侵蚀产物的研究  

Research on Arc Erosion Products on Silver-metal Oxide Contacts Materials

作　　者：凌国平[1] 薛天[1] 倪孟良[1] 刘远廷[1] 

机构地区：[1]浙江大学金属材料研究所,浙江杭州310027

出　　处：《贵金属》2008年第3期1-5,共5页Precious Metals

基　　金：科技部创新基金资助项目(02C26213310205)

摘　　要：针对电寿命试验后AgSnO2触头周围出现黑色侵蚀产物的现象,通过光学显微镜、扫描电镜观察和能谱成分分析等手段,对比研究了AgCdO及AgSnO2触头电弧侵蚀产物的形貌及组成。结果表明:AgSnO2周围沉积物呈现黑色是由于电弧侵蚀后产物为须状形貌所致,而该形貌与AgSnO2的电弧侵蚀时以"蒸发"为主有关。另一方面,AgCdO的电弧侵蚀以"喷溅"为主,其产物呈菜花状。研究结果还表明:对电弧侵蚀产物的深入研究,有助于对触头材料电弧侵蚀机理的探讨。The morphologies and components of the arc erosion product on AgCdO and AgSnO2 were investigated by means of optical microscopy（OM） and scanning electronic microscopy（SEM）. The results indicate that the formation of the ＇ black＇ product on AgSnO2 is due to the morphology of whisker that is related to its main type of erosion ＇evaporation＇. Furthermore, the arc erosion on AgCdO contact is ＇spray＇ and its product is like ＇cauliflower＇. It also indicates that deeply researching on the arc erosion product is helpful to explore the erosion mechanism.

关 键 词：金属材料 触头材料 AGCDO AGSNO2 电弧侵蚀 

分 类 号：TG146.32[一般工业技术—材料科学与工程] TM201.4[金属学及工艺—金属材料]