50Hz和400Hz下银镍合金触头材料电弧侵蚀研究  

Research on arc erosion of AgNi alloy contact materials at 50Hz and 400Hz

作　　者：李靖[1,2] 马志瀛[1] 黄绍平[2] 李建明[2] 

机构地区：[1]西安交通大学电气工程学院,陕西西安710049 [2]湖南工程学院电气信息学院,湖南湘潭411101

出　　处：《电工电能新技术》2010年第1期4-7,66,共5页Advanced Technology of Electrical Engineering and Energy

基　　金：湖南省自然科学基金资助项目(05JJ40068)

摘　　要：为研究低压、小电流、纯阻性负载下银基合金触头材料在交流400Hz的电弧侵蚀特性,通过研制的小容量可变频ASTM触头通断微机测试系统、SEM和EDAX,测量与分析了50Hz和400Hz下触头开断过程中AgNi、AgC和AgW触头材料燃弧特征值,分析了AgNi触头材料的表面形貌与微区组份,探讨了50Hz和400Hz两种交流频率下AgNi合金触头材料电弧侵蚀的成因。Using a developed ASTM contact material experimental system of small-capacity and variable frequency, the arc erosion characteristics of the Ag-based contact material at 400Hz were investigated by means of SEM and EDAX during the electric contact current make-and-break test under low voltage, pure resistive load and small current. The values of contact material arcing characteristics of AgNi, AgC and AgW, the changes of AgNi contacts materials surface profile and micro-area constituent were measured and analysed. The surface morphologies and micro-area compositions of AgNi contact material were also analysed, and the reasons of arc erosion of AgNi alloy contact material at AC 50Hz and 400Hz were discussed.

关 键 词：50Hz 400Hz 低压 小电流 银镍合金 触头材料 电弧侵蚀 

分 类 号：TM501.3[电气工程—电器] TM241[一般工业技术—材料科学与工程]