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Analytical Derivation of the Sauer-Freise Flux Equation for Multicomponent Multiphase Diffusion Couples with Variable Partial Molar Volumes

Published

Author(s)

Robert F. Sekerka, Geoffrey B. McFadden, William J. Boettinger

Abstract

The well-known Sauer-Freise flux equation is derived analytically for the general case of a multiphase, multicomponent diffusion couple with variable molar volume. Discontinuities in concentration vs. distance data are specifically treated. Fluxes with respect to the local center of volume are employed if the partial molar volumes are constants. Fluxes with respect to the local center of moles are employed for the more general case of variable partial molar volumes.
Citation
Journal of Phase Equilibria and Diffusion

Keywords

alloy, diffusion, molar volume, diffusion flux, Sauer-Freise Equation

Citation

Sekerka, R. , McFadden, G. and Boettinger, W. (2016), Analytical Derivation of the Sauer-Freise Flux Equation for Multicomponent Multiphase Diffusion Couples with Variable Partial Molar Volumes, Journal of Phase Equilibria and Diffusion (Accessed July 23, 2024)

Issues

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Created December 16, 2016, Updated October 12, 2021