田保红,程新乐,张 毅,刘 勇.放电等离子烧结Cu-Mo-WC复合材料电接触特性[J].稀有金属材料与工程,2018,47(3):943~948.[Tian Bao-hong,Cheng Cin-le,Zhang Yi,Liu Yong.Study on Electrical ContactSCharacteristics of Cu-Mo-WC Composites Sintering by SparkSPlasmaSSintering Process[J].Rare Metal Materials and Engineering,2018,47(3):943~948.]
放电等离子烧结Cu-Mo-WC复合材料电接触特性
投稿时间:2016-01-24  修订日期:2016-10-11
中文关键词:  Cu-Mo-WC复合材料  电弧侵蚀  材料转移  接触电阻  熔焊力
基金项目:国家自然科学基金资助(项目号51101052)
中文摘要:
      本文采用放电等离子烧结(SPS)工艺制备出(Cu-50Mo)-0.5%LaCl3和(Cu-50Mo)-5%WC-0.5%LaCl3两种复合材料,对复合材料的密度、硬度、导电率和显微组织进行了对比分析。并对复合材料进行了电接触性能测试,研究了其在直流阻性负载条件下的阴极、阳极材料转移和质量损失规律,并通过扫描电镜观察材料在电弧侵蚀后的形貌,对复合材料的电弧侵蚀特征进行了初步分析。结果表明:采用SPS工艺制备的复合材料具有良好的综合性能;随电流的增大材料转移量不断增加;电弧侵蚀后的触头表面呈现气孔、熔池和凹坑等形貌特征,且电流值越大,其形貌特征越明显;接触电阻随电流的增大而减小;接触电阻随电流变化无明显波动,而熔焊力随电流增大呈增加趋势。
Study on Electrical ContactSCharacteristics of Cu-Mo-WC Composites Sintering by SparkSPlasmaSSintering Process
英文关键词:Cu-Mo-WC composite  arc erosion  material transfer  contact resistance  welding force
英文摘要:
      The (Cu-50Mo)-0.5%LaCl3 and (Cu-50Mo)-5%WC-0.5%LaCl3 composites were prepared by spark plasma sintering (SPS) process. The density, hardness, electrical conductivity and microstructure of the composites were investigated respectively. The electrical contact test was carried out for both composites. The materials transfer direction and the anode, cathode mass change and the contact ends total mass change of the composites were studied under the condition of different DC and resistance load respectively. The morphologies after arc erosion were investigated by means of scanning electronic microscopy (SEM). The electrical erosive characteristics of the composites were analyzed. The results show that the composites have better comprehensive properties prepared by SPS method. The transfer mass increases with increase of electrical current density. The contact surface of the composites present the appearance characteristics with pores、molten pool and pits after arc erosion test. The surface arc erosion characteristics are much more obvious with increasing of current density. The contact resistance decreases with increasing of current. The contact resistance with the current changes has no obvious fluctuation, while the welding force increases with increase of current.
作者单位E-mail
田保红 河南科技大学 bhtian007@163.com 
程新乐 河南科技大学  
张 毅 河南科技大学  
刘 勇 河南科技大学  
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