The effective diffusion coefficient of boron in the Fe2B layers formed on the iron substrate

被引:4
作者
Keddam, M. [1 ]
Bouarour, B. [1 ]
Abdellah, Z. Nait [2 ]
Chegroune, R. [1 ]
机构
[1] USTHB, Fac GM & GP, Lab LTM, BP 32 El Alia, Algiers 16111, Algeria
[2] Univ Mouloud Mammeri, Fac Sci, Dept Chim, Tizi Ouzou 15000, Algeria
来源
XXXIX JEEP - 39TH EDITION OF THE JOINT EUROPEAN DAYS ON EQUILIBRIUM BETWEEN PHASES | 2013年 / 3卷
关键词
D O I
10.1051/matecconf/20130301012
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this current work, the boron diffusion coefficient in Fe2B was firstly evaluated using a diffusion model. It considers the effect of the incubation times required to form the Fe2B layers by the paste-boriding process on the iron substrate. This model solves the mass balance equation at the (Fe2B/substrate) interface under certain assumptions. Afterwards, the effective boron diffusion coefficient in Fe2B was evaluated through an application of a simple equation. As a result, the estimated value of boron activation energy in the presence of chemical stresses was found to be equal to 146.5 kJ mol(-1) on the basis of experimental data taken from the literature.
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页数:4
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