Tribology Letters

, 37:75

Friction Properties of Carbon Nano-Onions from Experiment and Computer Simulations

  • L. Joly-Pottuz
  • E. W. Bucholz
  • N. Matsumoto
  • S. R. Phillpot
  • S. B. Sinnott
  • N. Ohmae
  • J. M. Martin
Original Paper

DOI: 10.1007/s11249-009-9492-9

Cite this article as:
Joly-Pottuz, L., Bucholz, E.W., Matsumoto, N. et al. Tribol Lett (2010) 37: 75. doi:10.1007/s11249-009-9492-9

Abstract

The carbon nano-onion can be considered as a new kind of interesting lubricating nanoparticle. Used as lubricant additives, carbon nano-onions lead to a strong reduction of both friction and wear, even at low temperature. To better elucidate the mechanisms by which these processes occur, coupled experimental and computational investigations are carried out. In addition, it is found that lubricious iron oxide nanoparticles are generated in the core of the steel contact through mechanisms that are not yet known. The molecular dynamics simulations of carbon onions placed between sliding diamond-like carbon surfaces at high contact pressure indicate that the lubrication mechanism of the onions is based on a coupled process of rolling and sliding inside the contact area. We conclude that most of carbon onions seem to remain intact under friction processes and do not generate graphitic planes, which is in contrast to the previously determined behavior of MoS2 fullerenes that are mainly exfoliated inside the contact area and liberate lubricating lamellar sheets of h-MoS2.

Keywords

Carbon nano-onionsTribologyMolecular dynamics simulations

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • L. Joly-Pottuz
    • 1
    • 4
  • E. W. Bucholz
    • 2
  • N. Matsumoto
    • 3
  • S. R. Phillpot
    • 2
  • S. B. Sinnott
    • 2
  • N. Ohmae
    • 3
  • J. M. Martin
    • 1
  1. 1.Ecole Centrale de LyonLTDSEcullyFrance
  2. 2.Department of Materials Science and EngineeringUniversity of FloridaGainesvilleUSA
  3. 3.Faculty of Engineering, Department of Mechanical EngineeringKobe UniversityKobeJapan
  4. 4.INSA de Lyon, MATEISUniversity of Lyon, UMR 5510VilleurbanneFrance