A new analysis for the determination of ternary interdiffusion coefficients from a single diffusion couple

From: Metallurgical and Materials Transactions | Date: March 1, 1999| Author: | Copyright information

Concentration profiles that develop in a ternary diffusion couple during an isothermal anneal can be analyzed directly for average ternary interdiffusion coefficients. A new analysis is presented for the determination of average values for the main and cross-interdiffusion coefficients over selected regions in the diffusion zone from an integration of interdiffusion fluxes, which are calculated directly from experimental concentration profiles. The analysis is applied to selected isothermal diffusion couples investigated with a (fcc) Cu-Ni-Zn alloys at 775degC, beta (bcc) Fe-Ni-Al alloys at ...

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