纳米Ag/SnO2电接触材料的化学沉积制备工艺及耐电弧烧蚀性能  

Chemical deposition preparation process and arc erosion resistance of nano Ag/SnO2 electrical contact material

作　　者：刘松涛 郭敏 王俊勃 师浩军 杨凯[2] 游义博 LIU Songtao;GUO Min;WANG Junbo;SHI Haojun;YANG Kai;YOU Yibo(School of Materials Science and Engineering, Xi’an Polytechnic University, Xi’an 710048,China;School of Environmental and Chemistry Engineering, Xi’an Polytechnic University, Xi’an 710048,China)

机构地区：[1]西安工程大学材料工程学院,陕西西安710048 [2]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《纺织高校基础科学学报》2020年第4期45-50,共6页Basic Sciences Journal of Textile Universities

基　　金：陕西省自然科学基础研究计划项目(2016JM5049);陕西省重点研发项目(2018GY-110)。

摘　　要：为改善SnO2在银基体中的分布,采用水热法制备纳米SnO2粉体,并利用化学沉积工艺制备纳米Ag/SnO2电接触材料,测试制得纳米Ag/SnO2电接触材料的物理性能和耐电弧烧蚀性能。利用透射电镜、扫描电镜、X射线衍射仪对制得纳米Ag/SnO2电接触材料的微观形貌和物相结构进行表征。结果显示:化学沉积工艺制得的纳米Ag/SnO2电接触材料组织分布均匀,未出现单一元素的偏聚;纳米Ag/SnO2电接触材料的硬度、密度、电导率分别为148.9、9.43 g/cm3、39.5%IACS;电弧烧蚀后,纳米Ag/SnO2电接触材料表面成分分布均匀,无Ag富集区和SnO2富集区出现。To improve the distribution of SnO2 in silver matrix,the nano-sized SnO2 powder was prepared by hydrothermal method.The nano Ag/SnO2 electrical contact material was prepared by chemical deposition process.The physical properties and arc erosion resistance of the nano Ag/SnO2 electrical contact material were tested.The microstructure and phase structure of the nano Ag/SnO2 electrical contact material were characterized by TEM,SEM and XRD.The results show that the microstructure of the nano Ag/SnO2 electrical contact material prepared by chemical deposition process is evenly distributed,and there is no single element segregation.The hardness,density and conductivity of the nano Ag/SnO2 electrical contact material are 148.9,9.43 g/cm3,39.5%IACS,respectively.After arc erosion test,the surface composition of the nano Ag/SnO2 electrical contact materials is evenly distributed,without Ag enrichment area and SnO2 enrichment area.

关 键 词：水热法 纳米SNO2 化学沉积工艺 纳米Ag/SnO2电接触材料 耐电弧烧蚀 

分 类 号：TM205[一般工业技术—材料科学与工程]