On the connection between Q and D₀ for self-diffusion in f.c.c. binary metallic solid solutions

Abstract

A general relation connecting the pre-exponential factors D ₀ ^z(x) and the activation enthalpies Q ^z(x) (Z = A, B) for self-diffusion in AB binary metallic solid solutions is given. Comparison with the experimental data in f.c.c. Ag—Au, Cu—Ni and Pb—TI alloys leads to a good agreement and the values of the universal constants obtained are also in good accordance with those calculated from self- and impurity-diffusion data in pure metals.