A diffusion model for describing the bilayer growth (FeB/Fe2B) during the iron powder-pack boriding

被引：122

作者：

Keddam, M ^{[1
]}

Chentouf, SM ^{[1
]}

机构：

[1] USTHB, Dept Mat Sci, Fac Genie Mecan & Genie Procedes, Algiers 16111, Algeria

来源：

APPLIED SURFACE SCIENCE | 2005年 / 252卷 / 02期

关键词：

computer simulation; Fe-B phase diagram; powder-pack boriding; Fick's laws; growth kinetics;

D O I：

10.1016/j.apsusc.2005.01.016

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 paper, a diffusion model is proposed for studying the bilayer growth kinetics (FeB/Fe2B) on pure iron substrate during the powder-pack boriding in the temperature range of 1023-1273 K. This model based on Fick's laws was solved, under certain assumptions, considering a parabolic growth of iron borides. For this purpose, a computer simulation program was created for predicting the boride layer thickness as a function of process parameters (temperature, time and surface boron content). A fairly good agreement was observed between the simulation calculations and experimental data derived from the literature. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：393 / 399

页数：7

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