Paper Title:
A Model for the Growth of Fe2B Layers on a Steel Substrate: Effect of the Surface Boron Concentration
  Abstract

The growth kinetics of Fe2B layers formed at the surface of AISI 1018 was simulated. The paste-boriding (with a paste thickness of 4 mm) was applied to produce the Fe2B phase at the material surface; considering four temperatures (1123, 1173, 1223 and 1273 K) for 2, 4, 5, 6 and 8 h. The suggested model was based on the mass balance equation at the (Fe2B /substrate) interface. As a fitting parameter of the model, the surface boron concentration (12.16 wt. %B) was obtained in order to predict with a good agreement the experimental parabolic growth constants at the (Fe2B /substrate) interface derived from the literature. An expression of the parabolic growth constant at the (Fe2B /substrate) interface was obtained as a function of the two parameters: and . In addition, a relationship of the Fe2B layer thickness was also deduced that showed a good concordance with the experimental results from the literature.

  Info
Periodical
Solid State Phenomena (Volume 170)
Edited by
J.-L. Bobet, B. Chevalier and D. Fruchart
Pages
185-189
DOI
10.4028/www.scientific.net/SSP.170.185
Citation
M. Keddam, R. Chegroune, "A Model for the Growth of Fe2B Layers on a Steel Substrate: Effect of the Surface Boron Concentration", Solid State Phenomena, Vol. 170, pp. 185-189, 2011
Online since
April 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Vasil I. Dybkov
Abstract:Two borides FeB and Fe2B were found to form as separate layers at the interface between a 13% Cr steel and boron at 850-950 oC and reaction...
183
Authors: Ivan Campos-Silva, M. Ortíz-Domínguez, C. VillaVelázquez, R. Escobar, N. López
Abstract:This study evaluates the boron diffusion in the Fe2B phase formed at the surface of AISI 1018 steels during the paste boriding process. The...
79
Authors: Ivan Campos-Silva, M. Ortíz-Domínguez, N. López-Perrusquia, R. Escobar Galindo, O.A. Gómez-Vargas, E. Hernández-Sánchez
Abstract:The boron diffusion in the Fe2B and FeB borided phases formed at the surface of AISI H13 tool steels during the paste boriding process was...
681
Authors: Mourad Keddam
Abstract:A simulation of the growth kinetics of iron boride forming on AISI 1018 carbon steel was done on the basis of a kinetic model. This model...
269
Authors: Z. Nait Abdellah, Mourad Keddam, A. Elias
Chapter 7: Diffusion in Coatings and Thin Films
Abstract:In this work, a simulation of the growth kinetics of layers on AISI 1018 steel was done by means of a kinetic model. This model considers a...
401