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Modelling the Effect of Composition on the Stability of Equilibrium Intergranular Films with Diffuse Interfaces

Published online by Cambridge University Press:  10 February 2011

C. M. Bishop  and
W. C. Carter
C. M. Bishop
Affiliation:
Dept. of Materials Science and Engineering, Massachusetts Institute of Technology
W. C. Carter
Affiliation:
Dept. of Materials Science and Engineering, Massachusetts Institute of Technology
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Abstract

Current understanding of the equilibrium thickness of interfacial films derives from models which balance a steric repulsion against an attractive force between abutting crystals such as the van der Waals forces [1]. Recent experimental observations indicate that, a) film thickness is a non-monotonic function of additions of impurities and b) impurities are non-uniformly distributed in the interfacial phases and triple junctions [2]. We have developed a model which couples the steric terms which affect the equilibrium thickness with composition for a semi-infinite film in equilibrium with a chemical reservoir at a fixed composition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 586: Symposium M – Interfacial Engineering for Optimized Properties II , 1999 , 75
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

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