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Research Article | Open Access

An investigation on the tribological behaviors of steel/copper and steel/steel friction pairs via lubrication with a graphene additive

Junyuan MAO1, Guangyan CHEN1, Jun ZHAO2( ), Yongyong HE1( ), Jianbin LUO1
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Abstract

In this study, the tribological behaviors of graphene as a lubricant additive for steel/copper and steel/steel friction pairs were compared. For the steel/copper friction pair, the graphene sheets remarkably decreased the coefficient of friction and wear scar depth under low loads, but these slightly increased under high loads. The steel/steel friction pair showed excellent tribological properties even under high loads. Severe plastic deformation on the copper surface reduced the stability of the graphene tribofilm because of a rough copper transfer film on the steel during the running-in period. The results provide a better understanding of the mechanism of graphene as a lubricant additive.

Keywords

steel/copper and steel/steel friction pairstribological behaviorsgraphene additivestransfer film

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Friction
Volume 9 Issue 2,
April 2021
Pages 228-238
DOI: 10.1007/s40544-019-0327-x

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Cite this article:
MAO J, CHEN G, ZHAO J, et al. An investigation on the tribological behaviors of steel/copper and steel/steel friction pairs via lubrication with a graphene additive. Friction, 2021, 9(2): 228-238. https://doi.org/10.1007/s40544-019-0327-x

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Received: 05 May 2019
Revised: 22 July 2019
Accepted: 09 September 2019
Published: 18 January 2020
© The author(s) 2019

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