The abundant diffusion data on binary face-centred cubic Cu-Au and face-centred cubic Cu-Pt alloys were assessed in order to obtain the atomic diffusion mobilities of face-centred cubic Cu-Au and face-centred cubic Cu-Pt alloys by using the CALPHAD method. The obtained mobilities were expressed as functions of composition and temperature. Good agreement was obtained from comprehensive comparisons between the calculated and experimentally measured self-diffusion coefficients, impurity diffusion coefficients, tracer diffusion coefficients, interdiffusion coefficients, and concentration curves. Accordingly, the developed mobility parameters, in conjunction with the CALPHAD-type thermodynamic descriptions, could be used to simulate diffusion behaviors at high temperatures. It was believed that the results of this work contributed to the design of a general Cu mobility database.

Diffusion Mobilities in FCC Cu-Au and FCC Cu-Pt Alloys. Y.Liu, L.Zhang, D.Yu: Journal of Phase Equilibria and Diffusion, 2009, 30[2], 136-45