The vacancy-wind factors in well known expressions relating the interdiffusion coefficient and intrinsic diffusion coefficients to the tracer diffusion coefficients were examined in the context of the random alloy model. It was shown by Monte Carlo simulation that the Moleko et al. formalism provided a much better description of the factors than did the well 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 re-expressed so as to be suitable for direct experimental use in determining vacancy-wind factors. The limiting behavior of the ratios of the tracer and intrinsic diffusivities was also discussed. In the latter case the ratio was given simply (and generally) 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