ISSN   1004-0595

CN  62-1095/O4

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孟令通, 谢鑫林, 李利, 张雷. Ag-Cu-MoS2复合材料的真空载流磨损性能[J]. 摩擦学学报, 2016, 36(6): 755-761. DOI: 10.16078/j.tribology.2016.06.013
引用本文: 孟令通, 谢鑫林, 李利, 张雷. Ag-Cu-MoS2复合材料的真空载流磨损性能[J]. 摩擦学学报, 2016, 36(6): 755-761. DOI: 10.16078/j.tribology.2016.06.013
MENG Lingtong, XIE Xinlin, LI Li, ZHANG Lei. Wear Performance of Ag-Cu-MoS2 Composites under Current-Loading in Vacuum[J]. TRIBOLOGY, 2016, 36(6): 755-761. DOI: 10.16078/j.tribology.2016.06.013
Citation: MENG Lingtong, XIE Xinlin, LI Li, ZHANG Lei. Wear Performance of Ag-Cu-MoS2 Composites under Current-Loading in Vacuum[J]. TRIBOLOGY, 2016, 36(6): 755-761. DOI: 10.16078/j.tribology.2016.06.013

Ag-Cu-MoS2复合材料的真空载流磨损性能

Wear Performance of Ag-Cu-MoS2 Composites under Current-Loading in Vacuum

  • 摘要: 采用粉末冶金方法制备了含有不同Cu质量分数(2%~ 4%)的Ag-Cu-MoS2复合材料, 并对其力学性能、电学性能和真空载流磨损性能进行了研究. 结果表明: 较高Cu质量分数的Ag-Cu-MoS2复合材料表现出较高的硬度和抗弯强度; 中等Cu质量分数(2.5%和3%)的Ag-Cu-MoS2复合材料电刷表现出较低的电压降和电噪声; 滑动速度的增加会降低材料间的接触稳定性, 进而导致较高的电压降和较大的电噪声. 在真空载流条件下与Ag合金盘滑动摩擦过程, 不同Cu质量分数的Ag-Cu-MoS2复合材料电刷均表现出较低的磨损, 其磨损率在1×10–14m3/(N·m)~ 2.5×10–14m3/(N·m)范围, 其磨损机理主要为疲劳磨损以及黏着磨损.

     

    Abstract: Ag-Cu-MoS2 composites with different weight friction of Cu (2%~4%) were prepared by powder metallurgy. The mechanical performance and vacuum electrical/wear behavior were investigated. The results show that the composites had a higher bending strength and brinell hardness at Cu weight friction of 3.0% to 4.0%, and a lower contact voltage and electrical noise at Cu weight friction of 2.5% to 3.0%. Furthermore, the contact voltage and electrical noise increased as sliding velocity increased. During the sliding against Ag alloy under current-loading in vacuum, all the Ag-Cu-MoS2 brushes exhibited relatively low wear rates at a range of 1×10–14~2.5×10–14 m3/(N·m), and the main wear mechanism was adhesive wear and fatigue wear.

     

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