Electrical Sliding Wear Properties of Mo-Reinforced MoS_2/Cu Composites  

作　　者：马窦琴 谢敬佩 LI Jiwen LIU Shu WANG Fengmei WANG Wenyan WANG Aiqin SUN Haoliang 

机构地区：[1]School of Physical Engineering, Zhengzhou University [2]School of Material Science and Engineering, Henan University of Science and Technology [3]Non-ferrous Metal Generic Technology of Henan Collaborative Innovation Center

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2015年第1期60-64,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No:51371077);Non-ferrous Metal Generic Technology of Henan Collaborative Innovation Center

摘　　要：An adequate hardness of MoS2/Cu composites has not been achieved if these materials are applied under the extreme wear conditions. Therefore, Me-reinforced MoS2/Cu composites were prepared by powder metallurgy （P/M） methods. The electrical sliding wear properties in the absence or presence of Mereinforced MoS2/Cu composites were tested by HST-100 high speed electric-tribometer. The hardness, electrical conductivity, density, and microstmcture of MoS2/Cu composites were observed. Me-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 Me, 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.An adequate hardness of MoS2/Cu composites has not been achieved if these materials are applied under the extreme wear conditions. Therefore, Me-reinforced MoS2/Cu composites were prepared by powder metallurgy （P/M） methods. The electrical sliding wear properties in the absence or presence of Mereinforced MoS2/Cu composites were tested by HST-100 high speed electric-tribometer. The hardness, electrical conductivity, density, and microstmcture of MoS2/Cu composites were observed. Me-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 Me, 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.

关 键 词：me-reinforced MoS2/Cu composites powder metallurgy  electrical sliding wear properties wear mechanisms 

分 类 号：TB333[一般工业技术—材料科学与工程]