SIMULATION MODEL OF THE GROWTH KINETICS OF Fe2B LAYERS WITH CONSIDERATION OF THE BORIDE INCUBATION TIME EFFECT

Bendaoud Mebarek (), Mourad Keddam () and Hamza Boussebha ()
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Bendaoud Mebarek: Department of Computer Science, Ibn Khaldoun University of Tiaret, Tiaret, Algeria
Mourad Keddam: Laboratoire de Technologie des Matériaux, Département de Sciences des Matériaux, Faculté de Génie Mécanique et Génie des Procédés, USTHB, B.P No. 32, El-Alia 16111, Bab- Ezzouar, Alger, Algérie
Hamza Boussebha: Department of Metallurgy and Materials Engineering, Sakarya University, 54187, Turkey

Surface Review and Letters (SRL), 2020, vol. 27, issue 04, 1-10

Abstract: In this work, a mathematical model for simulating the thermochemical boronizing process is presented. The diffusion model used in this paper is based on Fick’s laws by solving the mass balance equation of the (FeB/Fe2B) interface. In this developed model, the effect of boride incubation times during the formation of Fe2B layers on Armco iron was considered. To demonstrate the validity of our calculations, the simulation results are compared with experimentally obtained data on borided Armco iron, which allowed us to verify the validity of the model. Therefore, a good concordance was observed when comparing the experimental parabolic growth constants taken from the literature with our simulated values of the parabolic growth constants from the present diffusion model. From this study, it has been found that the incubation time has a very important influence on the evolution of the kinetics of the boride layers.

Keywords: Boronizing; iron boride; diffusion model; simulation; incubation time (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19501270

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