The Quantum Effect on Mass Transfer in the Surface Layer in Stressed Solids

Abstract:

It has been shown that the plane surface of a stressed solid can become morphologically unstable relative to the perturbations of the electron density. The above instability is referred to as dynamic and evolves under the relaxation mechanism determined by the electron-electron interaction. The development of the dynamic instability is accompanied by the formation of a dynamic pattern differing from that which is formed under elastic-diffusion instability. To describe the dynamic pattern, a method has been proposed which takes into account the dynamic displacements of the atoms caused by a change in the interatomic interaction during the electron density redistribution. The origin of the different types of the pattern earlier observed experimentally on the free surface of the stressed solids has been explained. The dynamic displacements of the atoms have been shown to stimulate the diffusion mass transfer resulting in a change of the value and the sign of the diffusion coefficient.

• Periodical: Defect and Diffusion Forum (Volume 391)
• Pages: 226-232
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.391.226
• Online since: February 2019
• Authors: Y.A. Khon, Helena Zapolsky, Svetlana E. Kulkova, A.V. Bakulin, A.N. Ponomarev, N.G. Bobenko
• Keywords: Dynamic Instability, Electron-Electron Interaction, Mass Transfer, Stressed Solids, Surface Layer, Surface Pattern, Uphill Diffusion

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