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

Mourad Keddam

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

Paper Titles

Diffusion Brazing of Single Crystalline Nickel Base Superalloys Using Boron Free Nickel Base Braze Alloys
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Effects of Mg Additions on Surface Morphology and Corrosion Resistance of Hot-Dipped Zn Coatings
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Determination of Concentration Dependent Diffusion Coefficients of Carbon in Expanded Austenite
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Point Defects Characterization in Quenched δ-Ni₂Si as Deduced from Isothermal Magnetic Susceptibility Measurements
p.312

Growth Kinetics of Fe Boride Layers: Application of a Diffusion Model
p.318

Application of Artificial Neural Network for Prediction of Heat Treated Sintered Steels Properties
p.323

Prediction of Martensite Formation Start Temperature in Steels Using Artificial Neural Networks
p.329

Austenite Formation Temperature Prediction in Steels Using an Artificial Neural Network
p.335

Influence of P/M Distaloy AE Steel Porosities and Nitriding Process Parameters in Diffusion and Configuration of Nitrided Layers Through Advanced Liquid Salt Bath Nitriding Process
p.342

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

Abstract:

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.