Deduction of activation energy for diffusion by analyzing soft impingement in non-isothermal solid-state precipitation

被引：11

作者：

Fan, K. ^{[1
]}

Liu, F. ^{[1
]}

Zhang, K. ^{[1
]}

Yang, G. C. ^{[1
]}

Zhou, Y. H. ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

来源：

JOURNAL OF CRYSTAL GROWTH | 2009年 / 311卷 / 22期

关键词：

Diffusion; Growth models; Metals; Alloys; TRANSFORMATION KINETICS; NUCLEATION; GROWTH; DSC; PARAMETERS;

D O I：

10.1016/j.jcrysgro.2009.09.003

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Physically realistic analytical treatment of soft impingement has been developed for solid-state precipitations in a non-isothermal process following the basic assumptions (i.e., a two-stage transformation including a site saturation of nucleation, an isotropic growth and a linear approximation for a concentration gradient in front of the precipitate/matrix interface). Based on the analytical treatment. Kissinger-like approach has been obtained to deduce the activation energy Q for diffusion during soft impingement in the non-isothermal process. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：4660 / 4664

页数：5

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