Calculating of Diffusion Profiles in Ternary Systems Using Effective Interdiffusion Coefficients of Components

Abstract:

A method has been developed for calculating diffusion profiles in ternary systems by using effective interdiffusion coefficients of components and Boltzmanns solution for diffusion equation with variable diffusion coefficient. Using this method the concentration profiles for several diffusion couples in the systems Fe-Co-Ni and Cu-Fe-Ni are calculated as examples and some peculiarities of these calculations are discussed, particularly, how to solve some possible difficulties, which may sometimes arise at calculation procedures. It is shown that having the data on effective interdiffusion coefficients and their concentration dependence for at least two components in a ternary diffusion couple, the concentration profiles for all three components can be calculated with good accuracy.

• Periodical: Defect and Diffusion Forum (Volume 333)
• Pages: 73-82
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.333.73
• Online since: January 2013
• Authors: Ü. Ugaste, J. Priimets
• Keywords: Diffusion Paths, Interdiffusion Coefficients, Ternary System

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DOI: 10.2172/5743943

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