Ultralow-friction and wear properties of IF-WS2 under boundary lubrication

Lucile Joly-Pottuz, F. Dassenoy, M. Belin, B. Vacher, J. M. Martin, N. Fleischer

Research output: Contribution to journalArticlepeer-review

235 Citations (Scopus)


Tested in boundary lubrication, inorganic fullerene-like WS2 nanoparticles used as additives in oil present interesting friction reducing and anti-wear properties. A dispersion with only 1 wt% of particles leads, from a contact pressure of 0.83 GPa, to a drastic decrease of the friction coefficient below 0.04 and to very low wear. High resolution transmission electron microscopy (HRTEM), Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), Raman Spectroscopy and video imaging were used to explain the lubrication mechanisms. A structural modification of fullerene-like nanoparticles into sheets during the friction test was evidenced to be the main effect at the origin of these properties.

Original languageEnglish
Pages (from-to)477-485
Number of pages9
JournalTribology Letters
Issue number4
Publication statusPublished - 2005 Apr


  • Boundary lubrication
  • Friction
  • Inorganic fullerene-like WS nanoparticles
  • Raman spectroscopy
  • Transmission electron microscopy
  • Tribology
  • Video-imaging
  • X-ray diffraction


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