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Phenomenological diffusion laws in solids

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Abstract

A method is considered for study of diffusion in the solid phase, free of the shortcomings of Fick's equations. For the stationary case analytical expressions are obtained for the probability of transmission, reflection, and absorption of diffusing particles by a layer of specified thickness. Principles are formulated for reduction of the nonstationary problem to the stationary case. The results obtained are applied to a study of the kinetics of oxidation processes. A generalization of Fick's first law to the nonstationary case is presented.

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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 4, pp. 31–36, April, 1979.

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Rymkevich, P.P., Korshunov, V.S. Phenomenological diffusion laws in solids. Soviet Physics Journal 22, 365–370 (1979). https://doi.org/10.1007/BF00895653

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  • DOI: https://doi.org/10.1007/BF00895653

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