纳米AgSnO_2电接触合金的电性能  

The electrical properties of nano AgSnO_2 electrical contact alloys

作　　者：付翀[1] 杨增超[1] 侯锦丽[1] 刘松涛[1] 王俊勃[1] 邱谨[1] 

机构地区：[1]西安工程大学机电工程学院,陕西西安710048

出　　处：《西安工程大学学报》2013年第3期396-399,共4页Journal of Xi’an Polytechnic University

基　　金：陕西省教育厅专项科研计划项目(11JK0808);西安工程大学博士启动基金(BS1108);西安工程大学大学生创新创业计划项目(201202023)

摘　　要：采用化学共沉淀、高能球磨及常压烧结等方法制备了纳米AgSnO2电接触合金,对合金进行了耐电压和模拟电弧侵蚀实验,并对合金电弧侵蚀前后形貌进行了观察和分析.结果发现,所制备的电接触合金其纳米第二相弥散均匀分布于Ag基体中.与商用AgSnO2In2O3合金相比,纳米AgSnO2电接触合金的平均耐电压强度低,但分布更为集中.纳米AgSnO2电接触合金具有优良的耐电弧侵蚀性能,放电表面烧蚀轻微,烧蚀速率明显小于商用合金.The nano AgSnO2 electrical contact alloys were prepared by chemical coprecipitation, high-en- ergy ball milling and general sintering technique. The properties including microstructures, breakdown strength and arc erosion of electrical contact alloys were investigated. Results show that the nano-scaled second phase particles disperse evenly in silver matrix of contacts alloys. Compare with commerce AgSnO2In2O3 contact alloy, the nano contact alloy exhibits concentrative statistical distribution of breakdown strength. The average breakdown strength of nano AgSnO2 contact is smaller than that of commerce AgSnO2Ins03. After arc discharging, the melt erosion on the nano AgSnOz contact surface is slighter than commerce AgSnO2 In2 O3.

关 键 词：常压烧结 纳米AgSnO2 耐电压强度 电弧侵蚀 

分 类 号：TG146.4[一般工业技术—材料科学与工程]