Electrical Sliding Wear Properties of Mo-Reinforced MoS2/Cu Composites
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2015年第1期
论文作者：马窦琴 谢敬佩 LI Jiwen LIU Shu WANG Fengmei WANG Wenyan WANG Aiqin SUN Haoliang
文章页码：60 - 64
摘 要：An adequate hardness of MoS2/Cu composites has not been achieved if these materials are applied under the extreme wear conditions. Therefore, Mo-reinforced MoS2/Cu composites were prepared by powder metallurgy（P/M） methods. The electrical sliding wear properties in the absence or presence of Moreinforced MoS2/Cu composites were tested by HST-100 high speed electric-tribometer. The hardness, electrical conductivity, density, and microstructure of MoS2/Cu composites were observed. Mo-reinforcement MoS2/Cu composites are of good electrical conductivity, while the hardness of Mo-reinforcedment MoS2/Cu composites is about 33.3% higher than that of MoS2/Cu composites. With the addition of Mo, composites show better wear properties under high speed and large electric current due to the improvement of hardness. The effects of current intensity and sliding velocity on the wear properties of the tested materials are complicated, and the wear mechanisms of MoS2/Cu composites are mainly abrasive wear and adhesive wear with arc erosion.
马窦琴1，谢敬佩1,2,3，LI Jiwen2，LIU Shu2，WANG Fengmei2，WANG Wenyan2，WANG Aiqin2，SUN Haoliang2
1. School of Physical Engineering, Zhengzhou University2. School of Material Science and Engineering, Henan University of Science and Technology
摘 要：An adequate hardness of MoS2/Cu composites has not been achieved if these materials are applied under the extreme wear conditions. Therefore, Mo-reinforced MoS2/Cu composites were prepared by powder metallurgy（P/M） methods. The electrical sliding wear properties in the absence or presence of Moreinforced MoS2/Cu composites were tested by HST-100 high speed electric-tribometer. The hardness, electrical conductivity, density, and microstructure of MoS2/Cu composites were observed. Mo-reinforcement MoS2/Cu composites are of good electrical conductivity, while the hardness of Mo-reinforcedment MoS2/Cu composites is about 33.3% higher than that of MoS2/Cu composites. With the addition of Mo, composites show better wear properties under high speed and large electric current due to the improvement of hardness. The effects of current intensity and sliding velocity on the wear properties of the tested materials are complicated, and the wear mechanisms of MoS2/Cu composites are mainly abrasive wear and adhesive wear with arc erosion.
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