The role of interfacial curvature in the hysteresis in metal-hydrogen systems

被引：7
|
作者：
Balasubramaniam, R
机构：
[1] Dept. of Mat. and Metall. Eng., Indian Institute of Technology
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 1996年 / 21卷 / 02期
关键词：
D O I：
10.1016/0360-3199(95)00057-7
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：
A phenomenological theory based on interfacial thermodynamics is presented to explain the role of interfacial curvature in the hysteresis in metal-hydrogen systems. The influence of coherent matrix-hydride interface curvature on hydride formation and decomposition is outlined. The effect of finite phase boundary curvature on pressure, temperature and solvus hysteresis is derived. The applicability of the model to the hysteresis of Pd-H system is presented. Interfacial curvature effects become insignificant when the interface curvature becomes greater than 1 mu m.
引用
收藏
页码：119 / 127
页数：9
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