5 months ago
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Lubricants, Vol. 11, Pages 506: Study on the Lubricating Characteristics of Graphene Lubricants
Lubricants doi: 10.3390/lubricants11120506
Authors: Yi Dong Biao Ma Cenbo Xiong Yong Liu Qin Zhao
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.
