The role of non-ideality in H permeation through membranes

被引：11

作者：

Flanagan, Ted B. ^{[1
]}

Wang, D.

Shanahan, K. L.

机构：

[1] Univ Vermont, Dept Chem, Burlington, VT 05405 USA

[2] Savannah River Natl Lab, Aiken, SC 29808 USA

来源：

SCRIPTA MATERIALIA | 2007年 / 56卷 / 04期

关键词：

diffusion; interstitial;

D O I：

10.1016/j.scriptamat.2006.10.029

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Non-ideality may be important for H diffusion through metallic membranes at large concentrations. This is easily allowed for if the H concentration in the membrane is nearly constant, but if there is a large gradient, the degree of non-ideality will vary across the membrane. A procedure is given in this paper for the conversion of the measured concentration-dependent diffusion coefficients to the concentration-independent one when there is a significant gradient. (c) 2006 Acta Materialia, Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：261 / 263

页数：3

共 8 条

[1] MEASUREMENT OF DIFFUSION AND THERMAL CONDUCTIVITY CONSTANTS IN NONHOMOGENEOUS MEDIA, AND IN MEDIA WHERE THESE CONSTANTS DEPEND RESPECTIVELY ON CONCENTRATION OR TEMPERATURE [J].