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Measurement of Adhesion at Film -Substrate Interfaces by Constant Depth Scratch Testing

Published online by Cambridge University Press:  22 February 2011

I. Dutta
Affiliation:
Department of Mechanical Engineering, Naval Postgraduate School, Monterey, CA 93943
D. P. Lascurain
Affiliation:
Department of Mechanical Engineering, Naval Postgraduate School, Monterey, CA 93943
E. D. Secor
Affiliation:
Department of Mechanical Engineering, Naval Postgraduate School, Monterey, CA 93943
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Abstract

Quantitative tests for interfacial adhesion between films and substrates are of criticalimportance in micro-electronic applications. However, many of the available tests are applicable to a limited array of materials systems, or are experimentally complex. In thispaper, a constant depth scratch test, which has been designed to circumvent the limitations associated with currently available tests, is presented along with theoretical developments for the quantification of interfacial shear strength. Because of a fixed scratchgeometry, the test is amenable to straightforward analytical formulations unlike other versions of scratch tests. It is unique in its experimental simplicity, and allows evaluation of interface strength as function of position on the sample. Sample outputs from the test based on Cr films on glass substrates are presented.

Type
Research Article
Copyright
Copyright © Materials Research Society 1994

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