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Changes in the Linear Dimensions and Physicomechanical Properties of Flat Palladium Samples during Electrochemical Hydrogen Uptake and Subsequent Application of Different Techniques for Desorption of Hydrogen until Its Complete Removal from Palladiumстатья Исследовательская статья
- Авторы: Lyakhov B.F., Kotenev V.A.
- Журнал: Protection of Metals and Physical Chemistry of Surfaces
- Том: 58
- Номер: 3
- Год издания: 2022
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 633
- Последняя страница: 638
- DOI: 10.1134/s2070205122030121
- Аннотация: The kinetics of changes in the linear dimensions of flat Pd samples during electrochemical hydrogen uptake and subsequent electrochemical or thermal desorption has been studied. The amounts of heat released during thermal desorption of hydrogen from Pd at temperatures of 400 and 600°C in air and in vacuum are measured. The presence of irreversible changes in the crystal lattice of Pd after the hydrogen uptake–hydrogen desorption cycle is shown. Moreover, the nature of these changes depends on the method of desorption with complete removal of hydrogen from Pd. The length of the sample after electrochemical desorption increases compared to the initial length, and on the contrary, it decreases in the case of thermal desorption. The last claim is presumably associated with the pulsed heating of the Pd surface layers (up to their melting) during the thermal desorption of hydrogen from Pd and its subsequent reaction with atmospheric oxygen if the thermal desorption is carried out in the air atmosphere.
- Добавил в систему: Котенев Владимир Анатольевич