Альтернативная кинетическая модель роста боридных слоев на стали AISI 316

An alternative kinetic model is suggested for analyzing the growth of iron boride layers on the surface of steel AISI 316 in the range of 1123 - 1273 K. The approach is based on classical Fick's laws with allowance for the effect of the incubation period on the process of formation of boride layers. The activation energy of boron is calculated for FeB and Fe 2 B and compared to published data. The model is verified experimentally for the case of 3-h and 5-h boronizing at 1243 K. The experimental thicknesses of the layers are compared to the values predicted by the alternative diffusion model and by the integral method. The experimental and the predicted values agree well.

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