处理温度对电沉积银石墨复合镀层接触电阻的影响  

Effect of Treatment Temperature on the Contact Resistance of Electro-deposition Silver-graphite Composite Coating

作　　者：叶志国[1] 何庆庆[1] 刘磊[1] 陈宜斌 陈川 马光 韩钰 

机构地区：[1]南昌航空大学,江西南昌330063 [2]国网温州供电公司,浙江温州325000 [3]国网智能电网研究院,北京102211

出　　处：《稀有金属材料与工程》2017年第12期3989-3993,共5页Rare Metal Materials and Engineering

基　　金：国网浙江省电力公司科技/信息化项目(B355DW140005);江西省自然科学基金(20151BAB206017);江西省科技成果重点转移转化计划项目(20151BBI90006)

摘　　要：使用电沉积方法在铜基表面分别制备了纯银层、银石墨复合镀层和纯银/银石墨复合镀层,研究了处理温度对3种镀层接触电阻的影响。研究表明,室温时相同力矩下复合镀层与纯银镀层相比具有更低的接触电阻,5 N·m力矩下纯银镀层、银石墨复合镀层和纯银/银石墨复合镀层的接触电阻分别为24.9、19.4和19.9μ?。25~240℃处理后,3种镀层的接触电阻变化不大。240~600℃处理后,纯银镀层和纯银/银石墨复合镀层的接触电阻随温度增加而逐渐增大,600℃处理后5 N·m力矩下分别为54.3和42.6μ?;银石墨复合镀层的接触电阻随温度增加而迅速增大,480℃处理后已达125.5μ?,镀层表面出现严重"脱皮"现象。The fine silver,silver-graphite and fine silver/silver graphite composite coatings were prepared on copper substrate using the electro-deposition method.The influence of treatment temperature on the contact resistance of three types of composite coating was investigated.The results show that the contact resistance of the composite coatings is lower than that of the fine silver coating under the same torque at room temperature.There are no significant differences of contact resistance for three types of coating after heat treatment from 25°C to 240°C.The contact resistances of the fine silver coating and silver/silver-graphite composite coating gradually increase,and achieve the values of 54.3 and 42.6 μΩ under the 5 N·m torque,respectively,with the increase of treatment temperature from 240 °C to 600 °C.However,the contact resistance of the silver-graphite composite coating rapidly increases with treatment temperature increasing from 240°C to 600°C,and achieves the values of 125.5 μΩ at 480°C with the serious desquamation on the coating surface.

关 键 词：高压开关 处理温度 银石墨复合镀层 接触电阻 

分 类 号：TQ153[化学工程—电化学工业]