Study on the Lubricating Characteristics of Graphene Lubricants

被引:3
作者
Dong, Yi [1 ]
Ma, Biao [1 ]
Xiong, Cenbo [1 ]
Liu, Yong [2 ]
Zhao, Qin [1 ]
机构
[1] Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China
[2] North Univ China, Sch Energy & Power Engn, Taiyuan 030051, Peoples R China
关键词
graphene lubricant; friction and wear properties; roughness; lubrication characteristics; NANOPARTICLES;
D O I
10.3390/lubricants11120506
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
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.
引用
收藏
页数:15
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