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 non-equilibrium vacancies were studied. In the first alloy, metastable states may appear if the mixing energy was 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 non-equilibrium distribution was observed, which may generate so-called vacancy channels through which atoms diffuse much more rapidly than in the regular lattice.

Interdiffusion in Condensed Solutions. S.V.Terekhov: Technical Physics, 2007, 52[8], 998-1005