薛慧慧,田保红,张晓辉,刘勇,张毅

• 1:河南科技大学材料科学与工程学院
• 2:有色金属新材料与先进加工技术省部共建协同创新中心

摘要(Abstract)：

采用真空烧结和内氧化法制备了Al_2O_3-Cu/25W10Mo4Cr复合材料,研究了其硬度、导电率、密度等综合性能和电接触性能。利用JF04C电接触触点测试系统测试了复合材料的熔焊力、燃弧时间、质量转移等电接触性能参数;利用JMS-5610LV扫描电镜对电接触试验后复合材料的表面进行微观形貌分析。结果表明:电压为DC 25 V时,Al_2O_3-Cu/25W10Mo4Cr复合材料的燃弧时间、燃弧能量随负载电流的增大而增大;接触电阻随负载电流的增大而减小;电接触后触点材料表面有气孔、裂纹、凹坑等典型电弧侵蚀特征。

关键词(KeyWords)： Al_2O_3-Cu/25W10Mo4Cr复合材料;熔焊力;燃弧时间;燃弧能量;质量转移

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(U1704143);; 河南省科技开放合作项目(182106000018)

作者(Author): 薛慧慧,田保红,张晓辉,刘勇,张毅

DOI: 10.13289/j.issn.1009-6264.2019-0389

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