Friction and wear of DLC films in hydrogen gas

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In order to investigate the effects of hydrogen on friction and wear of DLC (Diamond-like carbon), reciprocating sliding tests were conducted with a-C:H (hydrogenated amorphous carbon) and ta-C (tetrahedral amorphous carbon) DLC films in controlled gas including hydrogen, air, argon and vacuum. The specimens were transferred to XPS (X-ray photoelectron spectrometer) for surface analysis without exposure to ambient air. It was found that ta-C DLC exhibited lower coefficient of friction and specific wear in hydrogen than in other environments, while a-C:H DLC showed lower friction in air and hydrogen. These results were discussed with the surface analysis with XPS. It was suggested that the low coefficient of friction depended on oxygen content on the sliding surfaces. It was also suggested that graphitization affected the friction, and that ta-C DLC graphitized less in hydrogen than in the other environments, which resulted in the low friction.

Original languageEnglish
Pages (from-to)701-709
Number of pages9
JournalToraibarojisuto/Journal of Japanese Society of Tribologists
Volume54
Issue number10
Publication statusPublished - Dec 28 2009

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Friction and wear of DLC films in hydrogen gas'. Together they form a unique fingerprint.

  • Cite this