Theoretical and Experimental Research of Hydrogen Solid Solution in Mg and Mg-Al System; Materials; Vol. 15, iss. 5

Theoretical and Experimental Research of Hydrogen Solid Solution in Mg and Mg-Al System; Materials; Vol. 15, iss. 5

Dades bibliogràfiques
Parent link:Materials
Vol. 15, iss. 5.— 2022.— [1667, 13 p.]
Autor corporatiu: Национальный исследовательский Томский политехнический университет Инженерная школа ядерных технологий Отделение экспериментальной физики
Altres autors: Lyu Jinzhe, Elman R. R. Roman Romanovich, Svyatkin L. A. Leonid Aleksandrovich, Kudiyarov V. N. Victor Nikolaevich
Sumari:Title screen
The study of hydrogen storage properties of Mg-based thin films is of interest due to their unique composition, interface, crystallinity, and high potential for use in hydrogen-storage systems. Alloying Mg with Al leads to the destabilization of the magnesium hydride reducing the heat of reaction, increases the nucleation rate, and decreases the dehydriding temperature. The purpose of our study is to reveal the role of the aluminum atom addition in hydrogen adsorption and accumulation in the Mg-H solid solution. Ab initio calculations of aluminum and hydrogen binding energies in magnesium were carried out in the framework of density functional theory. Hydrogen distribution and accumulation in Mg and Mg-10%Al thin films were experimentally studied by the method of glow-discharge optical emission spectroscopy and using a hydrogen analyzer, respectively. It was found that a hydrogen distribution gradient is observed in the Mg-10%Al coating, with more hydrogen on the surface and less in the bulk. Moreover, the hydrogen concentration in the Mg-10%Al is lower compared to Mg. This can be explained by the lower hydrogen binding energy in the magnesium-aluminum system compared with pure magnesium.
Idioma:anglès
Publicat: 2022
Matèries:
электронный ресурс
труды учёных ТПУ
magnesium
aluminum
thin film
hydrogen
first-principle calculations
магний
алюминий
тонкие пленки
водород
Accés en línia:http://earchive.tpu.ru/handle/11683/70739
https://doi.org/10.3390/ma15051667
Format: Electrònic Capítol de llibre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=667268

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