Influence of Soret Effect on Redistribution of Alloying Elements Between the Coating and Substrate Under Conditions of External Heating

  • M. V. Chepak-Gizbrekht
  • A. G. Knyazeva

An analytical solution has been obtained for a conjugate problem on redistribution of alloying elements between a coating and a substrate with account for the Soret effect caused by a temperature gradient under conditions of external heating and of the difference between the thermophysical and diffusional properties of conjugate layers. It is shown that the Soret effect can accelerate the diffusion of elements between the coating and substrate (when the thermal diffusion coefficient of a coating element is higher than that in the substrate) and retard it (in the opposite case), as well as lead to the leakage of the diffusant from the coating surface deep into the material.


diffusion Soret effect surface heating interface between layers operational method asymptotic expansion 


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Authors and Affiliations

  1. 1.National Research Tomsk Polytechnic UniversityTomskRussia
  2. 2.Institute of Physics and Material ScienceSiberian Branch of the Russian Academy of SciencesTomskRussia

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