Superlubricity of steel surfaces in presence of polyhydric alcohols

M. I. De Barros Bouchet, C. Matta, J. M. Martin, L. Joly-Pottuz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Anomalous low friction of hydrogen-free tetrahedral hybridized carbon (ta-C) coated surfaces lubricated by pure glycerol was observed at 80°C. In the presence of glycerol, the friction coefficient is below 0.01 at steady state, corresponding to so-called superlubricity regime. This new mechanism of superlow friction is attributed to easy glide on tribo-formed OH-terminated surfaces. In addition to the formation of OH-terminated surfaces but at a lower temperature, we show here some evidence that superlow friction of polyhydric alcohols could also be associated with tribo-induced degradation of glycerol, producing a nanometer-thick film containing organic acids and water. Second, we show novel outstanding superlubricity of steel surfaces directly lubricated by a solution of myo-inositol in glycerol at ambient temperature (25°C). For the first time, under boundary lubrication at high contact pressure, friction of steel is below 0.01 in the absence of any long chain polar molecules. Mechanism is still unknown but could be associated with friction-induced dissociation of glycerol and interaction with steel surface.

Original languageEnglish
Title of host publication2008 Proceedings of the STLE/ASME International Joint Tribology Conference, IJTC 2008
Pages181-183
Number of pages3
Publication statusPublished - 2009 Oct 16
Externally publishedYes
Event2008 STLE/ASME International Joint Tribology Conference, IJTC 2008 - Miami, FL, United States
Duration: 2008 Oct 202008 Oct 22

Publication series

Name2008 Proceedings of the STLE/ASME International Joint Tribology Conference, IJTC 2008

Other

Other2008 STLE/ASME International Joint Tribology Conference, IJTC 2008
CountryUnited States
CityMiami, FL
Period08/10/2008/10/22

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Process Chemistry and Technology
  • Mechanical Engineering

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  • Cite this

    De Barros Bouchet, M. I., Matta, C., Martin, J. M., & Joly-Pottuz, L. (2009). Superlubricity of steel surfaces in presence of polyhydric alcohols. In 2008 Proceedings of the STLE/ASME International Joint Tribology Conference, IJTC 2008 (pp. 181-183). (2008 Proceedings of the STLE/ASME International Joint Tribology Conference, IJTC 2008).