MODELING SURFACE EFFECTS ON HYDROGEN PERMEATION IN METALS

被引：20
|
作者：
MAKHLOUF, MM
SISSON, RD
机构：
[1] Worcester Polytechnic Institute, Worcester, 01609-2280, MA
来源：
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1991年 / 22卷 / 05期
关键词：
D O I：
10.1007/BF02661093
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new mathematical model for analyzing hydrogen permeation in solids, in which surface effects and traps influence hydrogen transport, is presented and solved. The new model combines the McNabb and Foster equations for diffusion with concomitant trapping[1] and a surface-limited mass-transfer boundary condition. An important result of the new model is the introduction of a new variable, h(m), which is defined as the surface-limited mass-transfer coefficient. The h(m) coefficient can account for all possible surface effects and may be experimentally evaluated.
引用
收藏
页码：1001 / 1006
页数：6
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