Relations for the self-diffusion parameters of elemental substances

Using experimental data for metals, silicon, and antimony, the preexponenti al factor in the equation for the self-diffusion coefficient, D = D(0)exp(- E/RT), is related to the atomic weight, atomic radius, density, fusion temp erature, and fusion entropy of elements. The relation obtained allows D-0 t o be evaluated to within a typical accuracy in experimental D-0 values. An empirical equation is derived for the temperature-dependent self-diffusion coefficient.