Numerical model of selective external oxidation of Fe-Mn binary alloys during non-isothermal annealing treatment Article - Janvier 2021

L. Gong, Jiang W.B, David Balloy, M.-L. Giorgi

L. Gong, Jiang W.B, David Balloy, M.-L. Giorgi, « Numerical model of selective external oxidation of Fe-Mn binary alloys during non-isothermal annealing treatment  », Corrosion Science, janvier 2021, p. 108921. ISSN 0010-938X

Abstract

A numerical model has been developed to describe the kinetics of selective external oxidation of Fe-Mn alloys during non-isothermal annealing. This model involves a thermodynamic analysis of possible reactions during annealing and then numerically solves the theoretical equations describing reactive diffusion and heterogeneous nucleation and growth of MnO oxides. The results of the model are the temperature-dependent evolution of the nucleation rate of MnO embryos and the size and surface coverage fraction of MnO particles. The results were validated by experimental data. The study concludes with a parametric analysis of the different physical constants of the model.

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