Friction properties of surface-fluorinated carbon nanotubes

R. L.Vander Wal, K. Miyoshi, K. W. Street, A. J. Tomasek, H. Peng, Y. Liu, J. L. Margrave, V. N. Khabashesku

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

Surface modification of the tubular or sphere-shaped carbon nanoparticles through chemical treatment, e.g., fluorination, is expected to significantly affect their friction properties. In this study, a direct fluorination of the graphene-built tubular (single-walled carbon nanotubes) structures has been carried out to obtain a series of fluorinated nanotubes (fluoronanotubes) with variable CnF (n = 2-20) stoichiometries. The friction coefficients for fluoronanotubes, as well as pristine and chemically cut nanotubes, were found to reach values as low as 0.002-0.07, according to evaluation tests run in contact with sapphire in air of about 40% relative humidity on a ball-on-disk tribometer which provided an unidirectional sliding friction motion. These preliminary results demonstrate ultra-low friction properties and show a promise in applications of surface modified nanocarbons as a solid lubricant.

Original languageEnglish (US)
Pages (from-to)738-743
Number of pages6
JournalWear
Volume259
Issue number1-6
DOIs
StatePublished - Jul 2005

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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