Influence of DLC coating thickness on tribological characteristics under sliding rolling contact condition

Masahiro Fujii, M. Ananth Kumar, Akira Yoshida

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Diamond-like-carbon (DLC) coating of thickness 3 and 10 μm were developed with and without radical nitriding pretreatment on steel rollers and spur gear pair. The friction coefficient and wear amount were evaluated under sliding rolling contact condition in vacuum and under oil lubrication. Delamination of coatings was observed at the interface of the substrate. The wear resistance of coatings improved with the thickness of the coating. In vacuum both the roller and the gear pair of 10 μm coating thickness with radical nitriding showed identical wear behavior. The radical nitriding seemed to enhance the life of DLC coatings.

Original languageEnglish
Pages (from-to)1289-1295
Number of pages7
JournalTribology International
Volume44
Issue number11
DOIs
Publication statusPublished - Oct 1 2011

Keywords

  • Coating thickness
  • DLC
  • Rollers
  • Spur gear

ASJC Scopus subject areas

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

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