Interdiffusion in condensed solutions
| Autor: | S. V. Terekhov |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Condensed matter physics Diffusion Alloy Non-equilibrium thermodynamics Thermodynamics engineering.material Condensed Matter::Materials Science Metastability Vacancy defect Physics::Atomic and Molecular Clusters engineering Coefficient matrix Constant (mathematics) Mixing (physics) |
| Zdroj: | Technical Physics. 52:998-1005 |
| ISSN: | 1090-6525 1063-7842 |
| DOI: | 10.1134/s1063784207080063 |
| Popis: | Expressions for the coefficient of interdiffusion of components in a binary condensed vacancy-free alloy and a diffusion coefficient matrix for the same alloy with equilibrium and nonequilibrium vacancies are studied. In the first alloy, metastable states may appear if the mixing energy is positive. In the case of the second alloy, closed spinodals may arise under certain conditions. In binary systems with a constant concentration of particles having close atomic volumes, a vacancy stationary nonequilibrium distribution is observed, which may generate vacancy “channels” through which atoms diffuse much more rapidly than in the regular lattice. |
| Databáze: | OpenAIRE |
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