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Plasticity During Fracture of the Au/Al2O3 Interface

Published online by Cambridge University Press:  21 February 2011

Ivar E. Reimanis
Ivar E. Reimanis*
Affiliation:
Materials Department, University of California, Santa Barbara, CA 93106
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Abstract

Au/Al2 O3 interfaces are created by bonding highly textured Au films (25 pm thick) to single crystal A12 O3. Mechanical tests are done under the optical microscope to examine the effect of plastic deformation on the energy of fracture of the interface. Fracture occurs at the interface and is accompanied by plastic deformation in the Au. The relatively large value for the fracture energy measured (50-70J/m2) is attributed to the plastic deformation in the Au. It is also observed that fracture occurs subcritically due to stress corrosion at fracture energies from 10-20J/m2. Topographic features on the fracture surfaces are characterized and discussed briefly.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 170: Symposium N – Interfaces in Composites , 1989 , 39
Copyright
Copyright © Materials Research Society 1990

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References

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