Numerical Analysis for Moving Phase Boundary in Finite/Semi-Infinite Multi-phase Diffusion Couple

Abstract

Numerical analysis for the calculation of concentration-distance curves in a binary finite/semi-infinite multi-phase diffusion couple based on the forward finite difference method has been proposed. By use of this method concentration-distance curves in the diffusion couple in which more than three diffusion phase layers are formed can be calculated for various periods of anneal time. This method will be useful to investigate disappearance or growth of the diffusion phase layers in the finite/finite or finite/infinite diffusion couple.