Synthesis of carbon films with ultra-low friction in dry and humid air

Christina A. Freyman, Yanfeng Chen, Yip Wah Chung*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Using pulsed dc magnetron sputtering, we synthesized hydrogenated amorphous carbon films with and without sulfur doping. These films were smooth and amorphous, with low compressive stress (< 1 GPa). Auger electron spectroscopy confirmed the incorporation of sulfur, and X-ray photoelectron spectroscopy showed that sulfur atoms are chemically bound. Most significant, ball-on-flat tribo-testing showed that hydrogenated carbon films doped with 5 at.% sulfur have ultra-low friction coefficients (< 0.01) in air with relative humidity from 0% to 50%.

Original languageEnglish (US)
Pages (from-to)164-167
Number of pages4
JournalSurface and Coatings Technology
Volume201
Issue number1-2
DOIs
StatePublished - Sep 12 2006

Keywords

  • Friction
  • Hydrogenated carbon films
  • Magnetron sputtering
  • Sulfur doping

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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