Dense-Gas Formulation of Self-Diffusion of Liquid Metals

Abstract

An accurate theory for the self-diffusion coefficient of liquid metals is developed in terms of the Van der Waals concept of a dense fluid. Making use of the Enskog hard-sphere formulation we obtain the following results: 1) a relationship for the coefficient of self-diffusion which accurately gives both the magnitude and temperature dependence over the entire liquid range at atmospheric pressure; 2) a relation between the melting point and the coefficient of self-diffusion which is the freezing counterpart of the Lindemann law of melting.