Influence of Nb Content on Structure and Functional Properties of Novel Multicomponent Nb–Ni–Ti–Zr–Co Alloy for Hydrogen Separation Membrane Application

Influence of Nb Content on Structure and Functional Properties of Novel Multicomponent Nb–Ni–Ti–Zr–Co Alloy for Hydrogen Separation Membrane Application

Библиографические подробности
Источник:Hydrogen.— .— Basel: MDPI AG
Vol. 5, iss. 4.— 2024.— P. 929-939
Другие авторы: Kashkarov E. B. Egor Borisovich, Svyatkin L. A. Leonid Aleksandrovich, Gusev K. S. Kirill Sergeevich, Ognev S. O. Sergey Olegovich, Koptsev M. Maksim, Terentjeva D. V. Darjya Vitaljevna, Murashkina T. L. Tatiana Leonidovna, Lider A. M. Andrey Markovich
Примечания:Title screen
Novel multicomponent Nb–Ni–Ti–Zr–Co alloys with 20–55 at.% Nb were synthesized from metal powders by arc melting. The resulting alloys consist primarily of Nb-rich and eutectic body-centered (BCC) phases. The content of the eutectic BCC phase is highest for an equimolar composition, while the content of the Nb-rich BCC phase increases with Nb content in the alloy. The content of secondary phases is the highest for the alloy with 32 at.% Nb. According to ab initio calculations, hydrogen occupies tetrahedral interstitial sites in the Nb-rich phase and octahedral sites in the eutectic BCC phase. For different Nb concentrations, hydrogen-binding energies were calculated. An increase in the Nb-rich phase leads to softening of multicomponent alloys. The alloys with 20 and 32 at.% Nb demonstrate high hydrogen permeability (1.05 and 0.96 × 10−8 molH2m−1s−1Pa−0.5, respectively) at 400 °C, making them promising for hydrogen purification membrane application. Multicomponent alloys with a high Nb content (55 at.%) have low resistance to hydrogen embrittlement
Текстовый файл
Язык:английский
Опубликовано: 2024
Предметы:
электронный ресурс
труды учёных ТПУ
alloys
microstructure
ab initio calculation
crystal structure
hydrogen permeability
Online-ссылка:https://doi.org/10.3390/hydrogen5040049
Формат: Электронный ресурс Статья
Запись в KOHA:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=681700

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