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.

中文翻译：

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Fe-Mn二元合金等温退火处理过程中选择性外氧化的解析模型

摘要 建立了一个数值模型来描述非等温退火过程中 Fe-Mn 合金的选择性外部氧化动力学。该模型包括对退火过程中可能发生的反应进行热力学分析，然后对描述 MnO 氧化物的反应扩散和异相成核和生长的理论方程进行数值求解。该模型的结果是 MnO 胚胎的成核速率以及 MnO 颗粒的尺寸和表面覆盖率随温度的变化。结果得到了实验数据的验证。该研究最后对模型的不同物理常数进行了参数分析。