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Resistance of hydrogenated titanium-doped diamond-like carbon film to hyperthermal atomic oxygen

Metals, ISSN: 2075-4701, Vol: 5, Issue: 4, Page: 1957-1970
2015
  • 7
    Citations
  • 0
    Usage
  • 13
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    7
    • Citation Indexes
      7
  • Captures
    13

Article Description

The effect of irradiation by a hyperthermal-atomic-oxygen beam on hydrogenated titanium-doped diamond-like carbon (hydrogenated Ti-DLC) films, applied as a solid lubricant for equipment used in low-earth orbit was investigated. Unlike the film thickness of hydrogenated non-doped DLC films, that of hydrogenated Ti-DLC films was found to be constant after the films were exposed to atomic oxygen. In addition, bulk composition of the hydrogenated Ti-DLC film stayed constant, and in particular, hydrogen content in the film did not decrease. These results indicate that a hydrogenated Ti-DLC film can keep its low friction properties under vacuum. Surface chemical analysis showed that a titanium-oxide layer is form on the film by exposure to atomic oxygen. The thickness of the titanium oxide layer was estimated to be about 5 nm from the element distribution in the depth direction of the hydrogenated Ti-DLC films. The titanium-oxide layer was interpreted to protect the bulk film from erosion by hyperthermal atomic oxygen.

Bibliographic Details

Kengo Kidena; Minami Endo; Hiroki Takamatsu; Masahito Niibe; Kazuhiro Kanda; Masahito Tagawa; Kumiko Yokota; Yuichi Furuyama; Keiji Komatsu; Hidetoshi Saitoh

MDPI AG

Materials Science

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