Synthesis and tribological properties of carbon nitride as a novel superhard coating and solid lubricant

Ming Y. Chen, X. Lin, V. P. Dravid

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

Abstract

This paper reports the discovery of a new crystalline thin-film material suitable for tribological applications. Carbon nitride thin films were synthesized using DC magnetron sputtering of a high-purity graphite target in an argon/nitrogen plasma using various substrates held at ambient temperatures. These thin films comist of mixed amorphous and crystalline phases. Unlike previous work, a significant amount of nitrogen, the NIC ratio exceeding 0.4 in the bulk, was incorporated. Infra-red studies showed that nitrogen was bonded to carbon in the film. These films appeared to be very wear-resistant under lubricated sliding conditiom. In dry sliding, carbon nitride gave friction coefficients as low as 0.16, comparable to diamond.

Original languageEnglish (US)
Pages (from-to)491-495
Number of pages5
JournalTribology Transactions
Volume36
Issue number3
DOIs
StatePublished - Jul 1993

ASJC Scopus subject areas

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

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