A Diffusion Model for the Fe_{2}B Layers Formed on a Ductile Cast Iron

• Authors: M. Keddam
• Languages of publication: EN

Abstracts

EN

In this work, a diffusion model was applied to estimate the boron diffusion coefficients in the Fe_{2}B layers on the ASTM A-536 ductile iron in the temperature range 1173-1273 K by the powder-pack boriding. The mass balance equation at the (Fe_{2}B/substrate) interface was formulated considering the effect of boride incubation times. As a result, the value of activation energy for boron diffusion in the ductile iron was estimated and compared with the literature. To verify the validity of the present model, the experimental Fe_{2}B layer thickness obtained at 1173 K for 10 h was compared to the predicted value. A good concordance was observed between the predicted value of Fe_{2}B layer thickness and the experimental data.

Keywords

EN

81.15.Aa; 68.55.A-; 68.47.De; 68.55.jd

Discipline

• 68.47.De: Metallic surfaces
• 68.55.A-: Nucleation and growth
• 81.15.Aa: Theory and models of film growth
• 68.55.jd: Thickness

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2018
• Volume: 133
• Issue: 5
• Pages: 1174-1177

Dates

published

2018-05

received

2017-05-03

(unknown)

2018-04-05

Contributors

author

M. Keddam

• Laboratoire de Technologie des Matériaux, Faculté de Génie Mécanique et Génie des Procédés, USTHB, B.P. No. 32, 16111 El-Alia, Bab-Ezzouar, Algiers, Algeria

Identifiers

DOI

10.12693/APhysPolA.133.1174