The vacancy-wind factors which appeared in well-known expressions that related interdiffusion coefficients and intrinsic diffusion coefficients to tracer diffusion coefficients were examined within the context of the random alloy model. It was shown, by Monte Carlo simulations, that the Moleko et alia formalism provided a much better description of these factors than did the better-known and commonly used Manning formalism. Even when the ratio of the tracer diffusion coefficients was relatively close to unity, it was preferable to use the Moleko formalism. The latter was reformulated here so as to be suitable for direct experimental use in determining vacancy-wind factors. The limiting behaviours of the ratios of the tracer diffusivities and intrinsic diffusivities were also considered. The ratio, in the latter case, was found to be given simply by the ratio of the exchange frequencies.

Behaviour of the Diffusion Vacancy-Wind Factors in the Concentrated Random Alloy. I.V.Belova, G.E.Murch: Philosophical Magazine A, 2001, 81[7], 1749-58