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Tribological properties of oleic acid-modified graphene as lubricant oil additives

  • Wei Zhang
  • , Ming Zhou
  • , Hongwei Zhu
  • , Yu Tian
  • , Kunlin Wang
  • , Jinquan Wei
  • , Fei Ji
  • , Xiao Li
  • , Zhen Li
  • , Peng Zhang
  • , Dehai Wu
  • Tsinghua University

Research output: Contribution to journalArticlepeer-review

296 Scopus citations

Abstract

Liquid phase exfoliated graphene sheets were modified by oleic acid and dispersed in lubricant oils as additives. The tribological behaviours of graphene-contained oils were investigated using a four-ball tribometer. The lubricant with optimized graphene concentrations of 0.02-0.06 wt% showed enhanced friction and anti-wear performance, with friction coefficient and wear scar diameter reduced by 17% and 14%, respectively.

Original languageEnglish
Article number205303
JournalJournal of Physics D: Applied Physics
Volume44
Issue number20
DOIs
StatePublished - 25 May 2011
Externally publishedYes

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