Abstract
The kinetics of surface segregation in a binary alloy is described by setting up and solving a system of rate equations using the change in Gibbs free energy between adjacent cells as atoms are interchanged between these cells. It is shown that this description is consistent with both the thermodynamical approach for the calculation of equilibrium surface coverages and the kinetic approach solving Fick's equations. The effect of the different parameters is discussed explaining results from the literature.
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