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Problems In Realistic Modelling Of Interfacial Reactions

Published online by Cambridge University Press:  26 February 2011

Charles W. Allen
Affiliation:
Dept. of Materials Science and Engineering, University of Notre Dame, Notre Dame, IN 46556
Gordon A Sargent
Affiliation:
Dept. of Materials Science and Engineering, University of Notre Dame, Notre Dame, IN 46556
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Abstract

For modelling the reaction of chemically distinct materials in which intermediate alloy phases are formed a simple thermodynamic description is not adequate. Despite thermodynamic prediction of multiple product phases, a single phase generally forms first which is not necessarily that of greatest thermodynamic stability or of simplest structure. Such initial reaction processes may be modelled as metastable perltectoid (solid-solid) or perltectlc (solid-liquid) reactions, characterized by large thermodynamic driving forces with superimposed kinetic and morphological constraints. The interfacial reaction problem is reviewed in light of heterogeneous nucleation theory with emphasis on non-classical aspects.

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Type
Research Article
Copyright
Copyright © Materials Research Society 1986

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