Influence of Nb Content on Structure and Functional Properties of Novel Multicomponent Nb–Ni–Ti–Zr–Co Alloy for Hydrogen Separation Membrane Application; Hydrogen; Vol. 5, iss. 4

Influence of Nb Content on Structure and Functional Properties of Novel Multicomponent Nb–Ni–Ti–Zr–Co Alloy for Hydrogen Separation Membrane Application; Hydrogen; Vol. 5, iss. 4

Detalles Bibliográficos
Parent link:Hydrogen.— .— Basel: MDPI AG
Vol. 5, iss. 4.— 2024.— P. 929-939
Otros Autores: 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
Sumario: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
Lenguaje:inglés
Publicado: 2024
Materias:
электронный ресурс
труды учёных ТПУ
alloys
microstructure
ab initio calculation
crystal structure
hydrogen permeability
Acceso en línea:https://doi.org/10.3390/hydrogen5040049
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=681700

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