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Study on the Lubricating Characteristics of Graphene Lubricants

Authors :
Yi Dong
Biao Ma
Cenbo Xiong
Yong Liu
Qin Zhao
Source :
Lubricants, Vol 11, Iss 12, p 506 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

Graphene is considered a good lubricant additive. The lubricating properties of graphene lubricant at different concentrations and temperatures are studied via a four-ball friction and wear-testing machine. The results show that the coefficient of friction (COF) and wear scar diameter (WSD) of the steel ball with 0.035 wt% graphene lubricant decreased by 40.8% and 50.4%, respectively. Finally, through surface analysis, the following lubrication mechanism is proposed: as the added graphene particles can easily fill and cover the pores of the friction surface, the contact pressure of the rough peak is reduced, resulting in a lower COF and smoother surface. Although the COF increases with temperature, graphene lubricants still exhibit good lubrication effects.

Details

Language :
English
ISSN :
20754442
Volume :
11
Issue :
12
Database :
Directory of Open Access Journals
Journal :
Lubricants
Publication Type :
Academic Journal
Accession number :
edsdoj.2288d25c9ea4927bcefadfbea9652d4
Document Type :
article
Full Text :
https://doi.org/10.3390/lubricants11120506