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Interfacial Fracture of Thin Polymer Films on Aluminum

Published online by Cambridge University Press:  01 February 2011

A. Strojny ,
N. R. Moody ,
J. A. Emerson ,
W. R. Even Jr  and
W. W. Gerberich
A. Strojny
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455 now with Xerox Corporation, Webster, NY 14580
N. R. Moody
Affiliation:
Sandia National Laboratories, Livermore CA 94550
J. A. Emerson
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
W. R. Even Jr
Affiliation:
Sandia National Laboratories, Livermore CA 94550
W. W. Gerberich
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455
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Abstract

In this study we combined nanoindentation techniques with mechanics-based models to determine interfacial fracture energies in a 16 μm thick styrene-acrylate film on T-6061 aluminum sheet and a 1.6 μm thick Epon 828/T403 epoxy film on sputtered aluminum. For the styrene-acrylate film, interfacial fracture occurred at a fracture energy of 8.9 J/m2. The epoxy film failed much more readily with a fracture energy of 0.2 J/m2. However, the addition of an adhesion-promoting interlayer improved the epoxy film performance to the point where the films did not fail even when the indentations exceeded the film thickness.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 629: Symposium FF – Interfaces, Adhesion and Processing in Polymer Systems , 2000 , FF5.13
Copyright
Copyright © Materials Research Society 2000

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References

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