The integral method is used to simulate the kinetics of growth of γ′-phase layers during nitriding of Armco iron in a microwave discharge chamber. Solution of the system of differential algebraic equations is used to assess the diffusivity of nitrogen in the γ′-phase layers in the temperature range of 773 – 843 K at a surface concentration of nitrogen equal to 5.9 wt.%. The computed activation energy of nitrogen diffusion and the predicted values of the thickness of the γ′-phase layer are compared to reported data.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 8, pp. 42 – 47, August, 2020.
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Keddam, M., Kulka, M. Simulation of the Growth Kinetics of γ′-Nitride Layers on Armco Iron by the Integral Method. Met Sci Heat Treat 62, 529–533 (2020). https://doi.org/10.1007/s11041-020-00597-y
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DOI: https://doi.org/10.1007/s11041-020-00597-y