Synthesis and properties of amorphous and crystalline carbon nitride superhard coatings

Yip Wah Chung*

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

Prompted by the theoretical prediction of Liu and Cohen that crystalline β-C3N4 may have mechanical properties similar to diamond, many research groups attempted to synthesize carbon nitride using various deposition techniques. Until recently, only amorphous carbon nitride coatings were made. These coatings, though much softer than diamond, display excellent tribological properties. The lack of success in making crystalline coatings suggests that β-C3N4 is metastable. Using TiN as seeding layers, we were able to synthesize fully crystalline carbon nitride composite coatings with hardness in the 45-55 GPa range, which is in the low end of diamond. Suggestions for further improvements and implementation with other deposition techniques will be described.

Original languageEnglish (US)
Pages51-67
Number of pages17
StatePublished - Jan 1 1996
EventProceedings of the 1995 9th International Conference on Surface Modification Technologies - Cleveland, OH, USA
Duration: Oct 29 1995Nov 2 1995

Other

OtherProceedings of the 1995 9th International Conference on Surface Modification Technologies
CityCleveland, OH, USA
Period10/29/9511/2/95

ASJC Scopus subject areas

  • Engineering(all)

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