The generalized Darken method was applied to simulate the diffusion between ?3-Ni| ?3a€?-Ni3Al and ?3a€?-Ni3Al|?2-NiAl interfaces. The results of calculations were compared with the experimental concentrationa€?s profiles of nickel, aluminum and hafnium in aluminide and hafnium doped aluminide coatings deposited by the CVD and PVD methods on pure nickel. The method deals with the Wagnera€?s integral diffusion coefficients and thermodynamic data - activities of components. The experimental results agree with the simulated ones.
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