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Investigation of the tribological behavior of graphene oxide nanoplates as lubricant additives for ceramic/steel contact

  • Lupeng Wu
  • , Zhijie Xie*
  • , Le Gu
  • , Baoyu Song
  • , Liqin Wang
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • School of Mechatronics Engineering, Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Effects of graphene oxide nanoplates (GOPs) as lubricant additives on tribological behavior of Si3N4 ceramic/GCr15 steel pairs were investigated, and especially focused on its effects under different rotational speeds and applied loads. Test results demonstrated that Load-carrying capacity, friction reduction and wear resistant were improved by 18.2%,14.7% and 34% with 0.5 wt% GOPs lubrication. Under all tested rotational speeds, GOPs enhanced friction reduction and wear resistance of sliding pairs. Compared to the low applied loads, the tribo-pairs exhibited better tribological properties under high applied loads. The rubbing surfaces were measured by Energy-Dispersive X-ray Spectroscopy and Raman Spectroscopy. The results illustrated that GOPs entered the contact interfaces to prevent tribo-pairs from direct contact, which reduced the materials transfer, friction and wear.

Original languageEnglish
Pages (from-to)113-120
Number of pages8
JournalTribology International
Volume128
DOIs
StatePublished - Dec 2018

Keywords

  • Friction
  • Graphene oxide nanoplates
  • SiN ceramics
  • Wear

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