Application of the Hard Sphere Theory to the Diffusion of Binary Liquid Alloy Systems
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چکیده
On the basis of the v a n der Waals concept of Ascarelli and Paskin the hard sphere theory of self diffusion is extended to binary l iquid alloys. Using only the melt ing temperature of the pure metals and the densities, component self-diffusion coefficients and, w i t h the help of Darken's equation, mutua l diffusion coefficients were calculated. Agreement w i t h experimental results is good in (Bi , Sn), and excellent in (Sn, Zn) and (L i , Ag). I m p u r i t y diffusion in l iquid Cu, Sn and Pb is predicted better than b y the theory of Protopapas et al. Deviations in (Hg, Zn) and (L i , Pb) are tentat ively a t t r ibuted to strong particle interactions in one component (Hg) or in the alloy (Li , Pb).
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تاریخ انتشار 2013