Interdiffusion in Ionic Compounds

Abstract:

In this chapter, we review the Nernst-Planck equation describing the cation interdiffusion coefficient, the two tracer cation diffusion coefficients and the thermodynamic factor in ionic compounds and how it is related to the analogous Darken-Manning relationship in binary alloy systems. We make use of the Onsager flux equations of non-equilibrium thermodynamics to rigorously address the problem. The recently found correction factor to the Nernst-Planck equation is analyzed visually by means of computer simulation

• Periodical: Diffusion Foundations (Volume 6)
• Pages: 44-58
• DOI: https://doi.org/10.4028/www.scientific.net/DF.6.44
• Online since: February 2016
• Authors: Irina V. Belova, Graeme E. Murch
• Keywords: Interdiffusion, Ionic Compounds, Manning Factor, Vacancy Wind Factor

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