Modelling the effect of composition on the stability of equilibrium intergranular films with diffuse interfaces

TitleModelling the effect of composition on the stability of equilibrium intergranular films with diffuse interfaces
Publication TypeBook Chapter
Year of Publication2000
AuthorsBishop, CM, Carter, WCraig
EditorCarter, CB, Hall, EL, Nutt, SR, Briant, CL
Book TitleInterfacial Engineering for Optimized Properties Ii
Volume586
Pagination75 - 79
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-finite film in equilibrium with a chemical reservoir at a fixed composition.