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Multiphase Ternary Diffusion Couples
Author(s) -
CHRISTENSEN N. H.
Publication year - 1977
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1977.tb15544.x
Subject(s) - diffusion , dissolution , phase (matter) , ternary operation , phase diagram , materials science , diffusion layer , thermodynamics , phase boundary , chemical physics , layer (electronics) , chemistry , nanotechnology , physics , organic chemistry , computer science , programming language
The study of diffusion couples whose reactants or products have multiphase structure gives useful insight into ceramic reactions. When a coarse‐scaled resolution is applied, multiphase regions may be treated similarly to 1‐phase regions with respect to diffusional behavior. In the phase diagram of ternary diffusion couples, a moving boundary occurs where the diffusion path crosses a 3‐phase field in any direction or a 2‐phase field along a tie line. The problems of simple dissolution, incongruent dissolution, 1‐phase layer growth, and 2‐phase layer growth are discussed for structures of solid solution‐free solids dispersed in continuous melts.