Abstract
Chemical interdiffusion via a pure vacancy mechanism is treated both in binary ionic solid solutions and metal alloys of cubic structure in the case of variable partial molar volumes. Both phenomenological and kinetic theories are used. Expressions for the chemical diffusion coefficient and the Kirkendall velocity are derived. Also expressions for the ionic conductivity, the diffusion field and the shift of tracer profile are derived. The results are discussed for KCl-RbCl, TlCl-TlBr, CoO-NiO, Fe-Ni, Cu-Ni, Au-Ni, Co-Pd and Cu-Ag systems.
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