Analysis of the growth kinetics of Fe2B layers by the integral method

J. Min. Metall. Sect. B-Metall. 54 (3) B (2018) 361-367. DOI:10.2298/JMMB180405026K
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In this study, an alternative approach based on the integral method was proposed to estimate the values of boron diffusion coefficients in the Fe2 B layers grown at the surface of Armco iron. The set of differential algebraic equations (DAE) system was obtained to estimate the value of activation energy for boron diffusion when pack-boriding of Armco iron in the range of 1123 to 1273 K taking into account the boride incubation time. The present model has been validated by making a comparison between the experimental value of Fe2 B layer thickness obtained at 1253 K for 5 h and the predicted results by using two different approaches. A good agreement was observed between these two set of data.
Keywords: Boriding; Iron boride; Kinetic model; Activation energy; Growth kinetics; Integral Method; DAE system
Correspondence Address:
M. Keddam, Laboratoire de Technologie des Matériaux,
Faculté de Génie Mécanique et Génie des Procédés, Bab-Ezzouar, Algiers, Algeria
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