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Indentation Characterisation of Carbon Materials

Published online by Cambridge University Press:  15 February 2011

John S. Field  and
M. V. Swain
John S. Field
Affiliation:
CSIRO Division of Applied Physics, Lindfield, NSW 2070, Australia, and Department of Mechanical Engineering, University of Sydney, NSW 2006, Australia
M. V. Swain
Affiliation:
CSIRO Division of Applied Physics, Lindfield, NSW 2070, Australia, and Department of Mechanical Engineering, University of Sydney, NSW 2006, Australia
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Abstract

High precision force-displacement measurements of various forms of glassy and graphitic carbon have been made with a Berkovich and spherical tipped indenter. The force-displacement data show almost complete recovery despite contact pressures exceeding a considerable fraction of the elastic modulus. With a spherical tipped indenter the transition from elastic to inelastic response could be readily identified. It was found that the extent of the hysteretic response with a spherical indenter increased with increasing load. Only minor differences in the force-displacement response of crystalline graphite indented normal to the basal plane and the glassy carbon was identified. A simple model for interpreting the force-displacement data is developed. These results are compared with indentations made on diamond like carbon films on various substrates.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 383: Symposium I – Mechanical Behavior of Diamond and Other Forms of Carbon , 1995 , 85
Copyright
Copyright © Materials Research Society 1995

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References

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