不同电流下Ce掺杂AgCuO触头材料转移行为研究  

Study of Materials Transfer Behavior of Ce-Doped AgCuO Contact Materials at Different Current Levels

作　　者：王海涛[1,2] 王彦岭 李书舸 王景芹 李文华[1,2] 赵伟 Wang Haitao;Wang Yanling;Li Shuge;Wang Jingqin;Li Wenhua;Zhao Wei(State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology,Tianjin 300130,China;Provincial and Ministerial Co-construction Collaborative Innovation Center on Reliability Technology of Electrical Products,Tianjin 300130,China;University of Manchester,Manchester M139PL,UK)

机构地区：[1]省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津300130 [2]电工产品可靠性技术省部共建协同创新中心,天津300130 [3]曼彻斯特大学,英国曼彻斯特M139PL

出　　处：《电工技术学报》2025年第2期574-586,共13页Transactions of China Electrotechnical Society

基　　金：中央引导地方科技发展资金(216Z1011G);河北省省级科技计划(225676163GH)资助项目。

摘　　要：材料转移是电弧侵蚀中的一个必然过程,研究材料转移机制对于优化电极的材料选择和设计,开发更耐用、更稳定的电极材料有重要意义,该文以Ce掺杂的AgCuO触头为研究对象,分析材料转移方向在不同电流下变化的机理。通过溶胶-凝胶法和粉末冶金法制备触头试样,借助JF04D电接触测试系统,在18 V电压下设置10、15、20和25 A四个电流等级,对触头进行20000次电弧侵蚀实验。首先对比了15 A电流条件下添加Ce后材料的性能提升情况,然后重点关注AgCuOCeO_(2)触头在不同电流下的燃弧能量与燃弧时间,测定侵蚀实验后阴阳极的质量变化,采用三维表面轮廓仪和扫描电镜表征阳极和阴极的表面侵蚀形貌,并对不同电流下的材料转移机制进行深入讨论分析。结果表明,Ce元素提升了触头性能,电流大小影响电极间金属离子和气体离子的浓度,引发金属相或气体相电弧的产生,导致材料转移方向在电流增大时发生改变。为选用和开发性能优良的AgCuO触头材料,进而提升AgCuO触头可靠性提供了理论依据。AgCuO electrical contacts offer an eco-friendly alternative to AgCdO,which can undergo various physical and chemical erosions,resulting in material transfer between the cathode and anode and altering the surface morphology.In severe cases,contact action is slowed down,leading to electrical contact failure and system breakdown.However,current research on the transfer mechanism of AgCuO contact materials is relatively limited.In order to develop more durable and stable electrode materials,this paper focuses on AgCuOCeO_(2) contacts through Ce element doping.The impact of current on the transfer behavior of AgCuOCeO2 electrical contact material is analyzed.CuO nanopowders doped with the rare earth element Ce were prepared using a sol-gel method,employing CuCl_(2)·2H_(2)O and CeCl_(3)·7H_(2)O with a mass ratio of 6.83∶1 as starting material.Next,Ag powder and CuO powder with an 85∶15 mass ratio were transformed into AgCuOCeO_(2) contacts using the sol-gel method.Subsequently,the contacts underwent arc erosion experiments at four different currents—10,15,20,and 25 A—using the JF04D electrical contact test system.The voltage level was set at 18 V,and the load was resistive.The performance enhancement of the material after adding Ce under the 15 A current condition was compared.The arc energy,arc duration,and mass change of AgCuOCeO_(2) contacts under different currents are measured.Lastly,the eroded surface morphology was assessed using a three-dimensional surface profiler.The bulge’s height and crater’s depth after erosion were determined,and the morphology was characterized using a scanning electron microscope.Elemental changes in typical regions before and after erosion were tested using energy spectroscopy.The experimental results indicate that the Ce element enhances the contact performance,and arc duration and arc energy of the making and breaking arcs increase to varying degrees with rising current at all four current levels.Comparing material mass before and after erosion at different currents rev

关 键 词：AgCuO触头材料 电弧侵蚀 材料转移 表面形貌 燃弧能量 燃弧时间 

分 类 号：TM501[电气工程—电器]