Relations between interdiffusivities and intrinsic diffusivities in ternary and quaternary alloys |
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| Authors: | I. V. Belova G. E. Murch |
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| Affiliation: | Diffusion in Solids Group, School of Engineering , The University of Newcastle , Callaghan , New South Wales , 2308 , Australia |
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| Abstract: | It is known that a reduction in the number of independent interdiffusivities and intrinsic diffusivities is possible if thermodynamic ideality of the (ternary) alloy is assumed or if the off-diagonal phenomenological coefficients are ignored. In the present letter we present a new analysis which shows generally, and exactly, that a reduction in the number of independent interdiffusivities and intrinsic diffusivities is always possible for ternary and higher alloys. In the general case, thermodynamic activities are also required. |
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