Abstract
A mathematical model of interdiffusion with a layer of finite coating thickness has been formulated. The method has adopted the Rayleigh–Ritz technique along with the mass balance integral method on the interface to predict the solute profile in the substrate, as well as the effective interdiffusion coefficient over a range of compositions in the matrix. The theoretical results are compared with the experimental data of Zn/CuZn and Pt/β-NiAl systems. The model precisely estimates the solute penetration depth in the substrate. The activation energy and pre-exponent factor of the predicted effective interdiffusion coefficient has been determined.
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Basak, P.S. Solute Profile during Diffusion Annealing of Thinly Coated Semi-Infinite Metallic Substrate. JOM 75, 3345–3352 (2023). https://doi.org/10.1007/s11837-023-05915-2
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DOI: https://doi.org/10.1007/s11837-023-05915-2