Growth Kinetics of Fe Boride Layers: Application of a Diffusion Model

Abstract:

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In the present work, a kinetic study based on a diffusion model was performed by use of both kinetics and thermodynamic data as input parameters, it was possible to evaluate the kinetic constant at each phase interface for a biphase configuration FeB and Fe2B grown over the surfaces of Armco Fe and Fe-Cr binary alloys at 0.5 and 4wt. %Cr by powder- pack boriding. The simulated values of the kinetics constants by the model were compared to those found in the literature and a good agreement was observed. For the Fe-4wt. %Cr alloy, it was found by simulation that the layer thickness ratio between the FeB and Fe2B phases is very sensitive to the increase of temperature and surface boron content.

Info:

Periodical:

Defect and Diffusion Forum (Volumes 273-276)

Edited by:

Andreas Öchsner and Graeme E. Murch

Pages:

318-322

DOI:

10.4028/www.scientific.net/DDF.273-276.318

Citation:

M. Keddam "Growth Kinetics of Fe Boride Layers: Application of a Diffusion Model", Defect and Diffusion Forum, Vols. 273-276, pp. 318-322, 2008

Online since:

February 2008

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$35.00

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