Heat capacity of a hydrogen subsystem in metal-hydrogen systems

被引：0
|
作者：
Smirnov, L. I. [1 ]
机构：
[1] Donetsk Natl Tech Univ, UA-83000 Donetsk, Ukraine
来源：
METALLOFIZIKA I NOVEISHIE TEKHNOLOGII | 2006年 / 28卷 / 03期
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中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The general formula is obtained that gives the relation between the heat capacities at constant volume and constant pressure for hydrogen subsystem in metal-hydrogen systems. The dissolution heat is calculated; it appears in this formula and, as demonstrated, it is not constant and depends on temperature and pressure. The state equation is obtained that links the hydrogen pressure in a gaseous phase, the hydrogen concentration in a metal, and the temperature. As shown, the temperature dependence fits satisfactorily with experimental dependence, which has a maximum in the temperature, range of 500-600 K. This maximum is demonstrated to be associated with a transfer of dissolved hydrogen atoms to the over-barrier states As the temperature is increased.
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页码：295 / 302
页数：8
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