低压交流阻性负载条件下AgSnO_2触头材料抗电弧侵蚀性能研究  

Researches on Arc-erosion Resistance Properties of AgSnO_2 Contact Materials Under Low Voltage,AC and Resistive Load

作　　者：李靖[1] 黄锡文 叶凡 侯月宾 刘元[1] 蒙建州 廖丽丽 

机构地区：[1]湖南工程学院,湖南湘潭411101 [2]桂林电器科学研究院金格公司,广西桂林541004

出　　处：《电工材料》2011年第4期3-9,共7页Electrical Engineering Materials

基　　金：广西科学研究与技术开发计划项目(20090301)

摘　　要：利用小容量触头材料试验与测试系统,在低压交流50 Hz、220 V、15 A、纯阻性负载条件下,对分别采用混粉、化学和雾化工艺制备的添加WO3、Bi2O3、CuO或In2O3微量添加剂的8种AgSnO2触头材料进行了45 000次连续通断试验,并对试验过程中的燃弧能量、熔焊力、燃弧时间、静触头温度和接触电阻等参数进行了测量;采用电子分析天平称取了试验前后动、静触头的质量,采用SEM和EDS观察和分析了8种AgSnO2铆钉触头试验后的表面形貌与特殊区域的微区成分;探讨了制备工艺和微量添加剂对AgSnO2触头材料抗电弧侵蚀性能的影响。With a developed testing and measuring system for small-capacity contact mate- rials, a test of 45 000 continuous make-break operations under the low-voltage, alterna- tive-current（50 Hz, 220 V, 15 A） and purely resistive load were made with 8 kinds of AgSnO2 electrical contact materials in symmetric pairs, which were made by powder mix- ing, chemical or atomization process with different doped additives of WO3, Bi2O3., CuO or in203. The data such as arcing energy, welding force, arc duration, fixed contact temperature and contact resistance were measured during the test. The masses of AgSnO2 contact materials were measured before and after the test with electronic analytical ba- lance. The special surface profiles and the microstruetures of 8 AgSnO2 contact materials were observed and measured by SEM and EDS after the test. The effects of the manu- facturing processes and the doped additives on the arc-erosion resistance properties ofAgSn02. contact materials were discussed.

关 键 词：AGSNO2触头材料 电弧侵蚀 交流 制备工艺 添加剂 

分 类 号：TM201.3[一般工业技术—材料科学与工程] TM501.3[电气工程—电工理论与新技术]