New in situ low-friction technology for diamond-like carbon coatings using surface discharge treatment in ambient air

Motoyuki Murashima, Shintaro Oyama, Hiroyuki Kousaka, Takayuki Tokoroyama, Woo Young Lee, Noritsugu Umehara

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

In the present paper, we develop a new in situ low-friction technology for diamond-like carbon coatings using surface discharge in ambient air. As a result, the friction coefficient dropped from 0.18 to 0.06 shortly after surface discharge. Surface profiles and Raman analysis revealed the effectiveness of surface discharge to provide a thick and soft transfer layer, providing the optimal low friction condition described by Halling. Finally, we clarified the optimum surface discharge design that low-energy surface discharge produced a thick transfer layer due to concentration of the produced debris, resulting in low friction.

Original languageEnglish
Article number107306
JournalTribology International
Volume165
DOIs
Publication statusPublished - 2022 Jan
Externally publishedYes

Keywords

  • Diamond-like carbon coatings
  • In situ surface treatment
  • Low friction technology
  • Surface discharge

ASJC Scopus subject areas

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

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