Friction Characteristics of Textured Surface of Graphene / copper Matrix Composites

被引：0
|
作者：
Xu L. [1 ]
Yang H. [1 ]
Kang H. [1 ]
Hou Y. [1 ]
机构：
[1] Faculty of Mechanical & Electrical Information, China University of Geosciences (Wuhan), Wuhan
来源：
Zhongguo Biaomian Gongcheng/China Surface Engineering | 2022年 / 35卷 / 04期
基金：
中国国家自然科学基金;
关键词：
friction and wear; graphene / copper matrix composites; hot pressing sintering; pit texture;
D O I：
10.11933/j.issn.1007-9289.20210824004
中图分类号：
学科分类号：
摘要：
The current research on graphene / copper matrix composites mainly focuses on the influence of the composite preparation process on the material properties, and there is a lack of in-depth investigation on the influence of surface friction properties of graphene / copper matrix composites. The graphene / copper matrix composites are prepared by hot pressing sintering process, followed by the various size and structure microtextured processing on composites surface using laser. The results show that when the content of graphene is 0.5%, the hardness of graphene / copper matrix composites peaks at 140 HV0.1, nearly 27% higher than that of copper alloy matrix. Besides, the surface friction coefficient and ear scar width of composites with pit texture show a “downward upward” trend with the increase of surface texture diameter. Specifically, the optimal result can be obtained when the pit diameter equals 200 μm a where the friction factor and the wear scar width reach their minimum at 0.377 and 231 μm, respectively. Thus, using well-designed textured structure with proper content of graphene can significantly contribute to both antifriction and abrasive resistance of graphene / copper matrix composites. The combination of powder metallurgy and laser structuring technology can provide a new method to improve the friction and wear properties of parts. © 2022 Chinese Mechanical Engineering Society. All rights reserved.
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页码：75 / 83
页数：8
相关论文
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