Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1447422 | Acta Materialia | 2011 | 9 Pages |
Abstract
Under certain conditions, there are multiple analytical solutions for the interface velocity in ternary two-phase diffusion couples. We have tackled this degeneracy problem by employing an isothermal phase-field model for diffusion couples that allows comparison with the analytical solutions. We find that, besides the three analytically predicted single-interface diffusion paths, a triple-interface diffusion path can also form. Furthermore, analysis of the phase-field simulation results shows that the Gibbs energies of both the bulk phases and the interfaces must be considered to determine uniquely the evolution of a diffusion couple, in case whether a single or multiple interfaces form.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
J. Heulens, B. Blanpain, N. Moelans,