Tribological properties of tetrahedral carbon films deposited by filtered cathodic vacuum arc technique

X. Shi, B. K. Tay, D. I. Flynn, Z. Sun

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

10 Scopus citations

Abstract

Ta-C films have been deposited using FCVA technique. The hardness and Young's modulus of the films on both silicon and sapphire substrates are determined by an ultra low load depth sensing nanoindenter to examine their dependence on the carbon ion energy. An optimum ion energy around 80 to 90 eV has been found, which coincides with the energy at which the sp3 content and film density reach maximum values. At this ion energy, the hardness, modulus and critical load of a 60 nm film on sapphire exhibit maximum values of 60 GPa, 580 GPa and 7 mN, respectively, whilst the frictional coefficient shows a minimum of 0.16.

Original languageEnglish
Title of host publicationThin Films
Subtitle of host publicationStresses and Mechanical Properties VI
DOIs
StatePublished - 1996
Externally publishedYes
EventProceedings of the 1996 MRS Spring Meeting - San Francisco, CA, USA
Duration: 8 Apr 199612 Apr 1996

Publication series

NameMaterials Research Society Symposium - Proceedings
Volume436
ISSN (Print)0272-9172

Conference

ConferenceProceedings of the 1996 MRS Spring Meeting
CitySan Francisco, CA, USA
Period8/04/9612/04/96

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