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Validated measurement of Young's modulus, Poisson ratio, and thickness for thin coatings by combining instrumented nanoindentation and acoustical measurements

Published online by Cambridge University Press:  03 March 2011

N.M. Jennett ,
G. Aldrich-Smith  and
A.S. Maxwell
N.M. Jennett
Affiliation:
NPL Materials Centre, National Physical Laboratory, Teddington, United Kingdom
G. Aldrich-Smith
Affiliation:
NPL Materials Centre, National Physical Laboratory, Teddington, United Kingdom
A.S. Maxwell
Affiliation:
NPL Materials Centre, National Physical Laboratory, Teddington, United Kingdom
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Abstract

Nanoindentation is one of the very few techniques that can measure both the elastic and plastic properties of very small volumes of materials. Recently it has been shown that the properties of thin coatings can be determined by nanoindentation, even when the normal indentation response includes a significant component due to the substrate. This paper takes the method a step further and shows how by combining acoustical test methods with nanoindentation, a validated set of values for the thickness, Young's modulus, and Poisson ratio for a coating can be obtained.

Keywords

NanoindentationCoatingAcoustic
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 1 , January 2004 , pp. 143 - 148
Copyright
Copyright © Materials Research Society 2004

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