On the Consistency of the Darken Method with the Onsager Representation for Diffusion in Multicomponent Systems

Marek Danielewski; Marek Zajusz; Bogusław Bożek; Katarzyna Tkacz-Śmiech

doi:10.4028/www.scientific.net/DDF.369.53

Paper Titles

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Operating Activity Visualization and Thermal Performance Measurement of Pulsating Heat Pipe
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Fabrication of Foam-Type Porous Silicon Carbide without Cracks and Hollow Struts
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On the Consistency of the Darken Method with the Onsager Representation for Diffusion in Multicomponent Systems
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High Temperature Corrosion of Al Hot-Dipped Low Carbon Steels in N₂/H₂S-Mixed Gases
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Optical Microconcentrator System for Enhancing Solar Cell Photovoltaic Performances
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Fabrication of Micro-Lens Array Obtained by Anisotropic Wet Etching of Silicon
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Multiphase Ni-Cr-Al Diffusion: Experiment and Simulations
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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 369On the Consistency of the Darken Method with the...

On the Consistency of the Darken Method with the Onsager Representation for Diffusion in Multicomponent Systems

Abstract:

A consistency between the Darken method and the Onsager representation for cross diffusion in multicomponent system is shown. The justification is made by defining new sets of forces and fluxes linearly interrelated by a symmetric matrix of phenomenological coefficients. For the first time, the system of the components having various molar volumes is treated in this way. It is shown that the transformation leaves the entropy production unchanged. As an example, the entropy production for interdiffusion in the ternary Co-Fe-Ni diffusion couple is calculated and compared with mixing entropy.