化学气相沉积法及机械混合法添加石墨烯对铜铬触头性能的影响  

Theeffects of mechanical mixing and chemical vapor depositiondoping graphene on the CuCr contact

作　　者：陈华强 陶应啟 李晓静 吴云洪 王吉应 叶墨稼 余贤旺 CHEN Huaqiang;TAO Yingqi;LI Xiaojing;WU Yunhong;WANG Jiying;YE Mojia;YU Xianwang(Green Energy New Material R&D center,Zhejiang Metallurgical Research InstituteCo.,Ltd.,Hangzhou 310005,China)

机构地区：[1]浙江省冶金研究院有限公司绿能新材料研发中心,杭州310005

出　　处：《功能材料》2023年第12期12148-12153,12162,共7页Journal of Functional Materials

基　　金：浙江省2022年度“尖兵”“领雁”研发攻关计划项目(2022C01141)。

摘　　要：随着电力系统发展,其主要电气控制设备断路器的功率不断提升。作为断路器的核心部件,电触头材料的研究得到了越来越广泛的关注。本文以铜粉、铬粉和石墨烯为原料,分别通过机械混合法和化学气相沉积法添加石墨烯,再通过压制-烧结-复压-复烧工艺制成石墨烯增强铜铬复合材料。研究了不同工艺添加石墨烯对铜铬复合材料组织及性能的影响。研究发现,通过化学气相沉积法添加的石墨烯在基体中分布均匀,电导率提升至40.64 MS/s、平均燃弧时间为5.37 ms、熔焊力变化范围为13.550~13.636 N,电导率、抗熔焊性能和耐烧蚀性能等得到了明显的提高,有利于其进一步扩大在电接触材料领域的应用范围。With the development of the power system,the power of its main electrical control equipment circuit breakers continues to increase.As the core component of circuit breakers,the research on electrical contact materials has received increasing attention.In this paper,Cu powder,Cr powder and graphene are used as raw materials.Graphene was added by mechanical mixing and chemical vapor deposition respectively.Graphene reinforced CuCr contacts were made by pressing-sintering-repressing-resintering process.The effects of different processes on the microstructure and properties of CuCr contacts were studied.It is found that the graphene added by chemical vapor deposition is evenly distributed in the matrix.The conductivity is increased to 40.64 MS/s,the average arcing time is 5.37 ms,and the welding force ranges from 13.550 to 13.636 N.The conductivity,welding resistance and ablation resistance have been significantly improved,which is beneficial to further expand its application range in the field of electrical contact materials.

关 键 词：铜铬合金 石墨烯 熔焊力 燃弧时间 开断试验 

分 类 号：TB331[一般工业技术—材料科学与工程]