Impurity diffusion constants and vacancy–impurity binding energies in solids
- 1 June 1985
- journal article
- research article
- Published by SAGE Publications in Materials Science and Technology
- Vol. 1 (6) , 442-447
- https://doi.org/10.1179/026708385790124602
Abstract
Activation energies for impurity diffusion in solids are discussed. New approaches based on elasticity are outlined to predict values of activation energy from the atomic size, surface energy, and elastic modulus of the matrix and impurity. The activation energy for self-diffusion in the matrix must also be known. It is shown that reasonable agreement between the theoretical and experimental values of activation energy are obtained for copper, aluminium, nickel, and iron matrices. The elastic strain energy model is extended to facilitate predictions of vacancy–impurity binding energies. Again good agreement between experiment and theory is obtained, except in the case of aluminium matrices. MST/211Keywords
This publication has 12 references indexed in Scilit:
- Effective diffusion coefficients of point defects in impure materialsActa Metallurgica, 1981
- Vacancy-solute interactions in metalsJournal of Nuclear Materials, 1978
- Impurity diffusion in aluminumJournal of Nuclear Materials, 1978
- The segregation of boron to grain boundaries in solution-treated Type 316 austenitic stainless steelMetal Science, 1976
- Kinetics of niobium carbide precipitation in a low carbon austenitic steelJournal of Materials Science, 1975
- The depletion of germanium solute around vacancy sinks in aluminumActa Metallurgica, 1970
- Diffusion of Al26 and Mn54 in AluminumJournal of Applied Physics, 1962
- Self diffusion in ironActa Metallurgica, 1961
- A model for solute diffusion in metals based on elasticity conceptsActa Metallurgica, 1957
- Theory of Do for Atomic Diffusion in MetalsJournal of Applied Physics, 1951