Study on the Lubricating Characteristics of Graphene Lubricants

Yi Dong, Biao Ma, Cenbo Xiong*, Yong Liu, Qin Zhao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

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.

Original languageEnglish
Article number506
JournalLubricants
Volume11
Issue number12
DOIs
Publication statusPublished - Dec 2023

Keywords

  • friction and wear properties
  • graphene lubricant
  • lubrication characteristics
  • roughness

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