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The micro-wear technique and its application to ultrathin film systems

Published online by Cambridge University Press:  03 March 2011

T.W. Wu  and
C-K. Lee
T.W. Wu
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
C-K. Lee
Affiliation:
IBM Research Division, Almaden Research Center, San Jose, California 95120-6099
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Abstract

A micro-wear testing technique has been developed by incorporating a piezoelectric pusher into an existing microindenter system. The pusher and its associated servo-control circuitry were designed to generate a precise reciprocating horizontal motion at the indenter tip for implementing a microscaled wear test. The information acquired from the test includes the wear loading curve, i.e., the normal applied load versus wear penetration depth, the friction force, and in turn, the apparent wear friction coefficient. Measuring the electrical resistance across the coating thickness is also possible if an electrical conducting indenter is utilized. Furthermore, in conjunction with the surface characterization tools, the wear morphology revealed useful information regarding the coating failure mechanism(s) and shed some light toward understanding coating tribology. The tester design concepts, operating procedure, data acquisition, and analysis will be examined. Experimental results on ultrathin carbon coatings with various thicknesses will be employed to illustrate the capabilities of the micro-wear tester.

Type
Articles
Information
Journal of Materials Research , Volume 9 , Issue 3 , March 1994 , pp. 805 - 811
Copyright
Copyright © Materials Research Society 1994

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References

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