nucВестник НЯЦ РКNNC RK Bulletin1729-75161729-7885Национальный ядерный центр Республики Казахстан10.52676/1729-7885-2026-1-43-50nuc-938Research ArticleСтатьиПОВЫШЕНИЕ КИНЕТИКИ ВОДОРОДОПОГЛОЩЕНИЯ СИСТЕМЫ Mg-Al ПУТЕМ КОНТРОЛИРУЕМОГО ФАЗООБРАЗОВАНИЯ Mg17Al12ENHANCEMENT OF HYDROGEN ABSORPTION KINETICS IN THE Mg-Al SYSTEM THROUGH CONTROLLED FORMATION OF THE Mg17Al12 PHASEМиниязовА. Ж.MiniyazovA. Zh.

Заместитель директора Филиала Института Атомной Энергии

Курчатов

Семей

Kurchatov

Semey

Miniyazov@nnc.kzМухамедоваН. М.MukhamedovaN. M.

Начальник лаборатории перспективных материалов

Курчатов

Семей

Kurchatov

Semey

bakayeva@nnc.kzОспановаЖ. Н.OspanovaZh. N.

Инженер лаборатории перспективных материалов

Курчатов

Усть-Каменогорск

Kurchatov

Ust-Kamenogorsk

ospanova@nnc.kzӨкенО.OkenO.

Курчатов

Kurchatov

oken@nnc.kzУазырхановаГ. К.UazyrkhanovaG. K.

Усть-Каменогорск

Ust-Kamenogorsk

guazyrhanova@edu.ektu.kzАхмедиТ. Д.AkhmediT.

Курчатов

Kurchatov

tolkyn.akhmedieva@gmail.comФилиал «Институт атомной энергии» РГП НЯЦ РК; НАО «Шакарим университет»КазахстанBranch “Institute of Atomic Energy” RSE NNC RK; NJSC “Shakarim University”KazakhstanФилиал «Институт атомной энергии» РГП НЯЦ РК; НАО «Восточно-Казахстанский технический университет им. Д. Серикбаева»КазахстанBranch “Institute of Atomic Energy” RSE NNC RK; NJSC “Shakarim University”KazakhstanФилиал «Институт атомной энергии» РГП НЯЦ РККазахстанBranch “Institute of Atomic Energy” RSE NNC RKKazakhstanНАО «Восточно-Казахстанский технический университет им. Д. Серикбаева»КазахстанNJSC “D. Serikbayev East Kazakhstan technical university”Kazakhstan202625042026014350Copyright © Миниязов А.Ж., Мухамедова Н.М., Оспанова Ж.Н., Өкен О., Уазырханова Г.К., Ахмеди Т.Д., 20262026Миниязов А.Ж., Мухамедова Н.М., Оспанова Ж.Н., Өкен О., Уазырханова Г.К., Ахмеди Т.Д.Miniyazov A.Z., Mukhamedova N.M., Ospanova Z.N., Oken O., Uazyrkhanova G.K., Akhmedi T.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://journals.nnc.kz/jour/article/view/938

В работе представлены результаты исследования системы Mg-Al, направленного на повышение кинетики водородопоглощения за счет оптимизации фазового состава и параметров синтеза. Для выбора режима синтеза выполнено трехмерное термодинамическое моделирование в Thermo-Calc, позволившее определить температурно-концентрационные области устойчивости интерметаллической фазы Mg17Al12 при сохранении твердого раствора Mg. На основе полученных данных проведены механосинтез порошков и их искровое плазменное спекание при 350 ℃. Рентгенофазовый анализ подтвердил соответствие экспериментального фазового состава расчетным прогнозам. Образцы с оптимальной долей Mg17Al12 (30 масс.%) показали двукратное увеличение скорости водородопоглощения по сравнению с чистым Mg при температуре 300 ℃ и давлении 20 бар. Полученные результаты подтверждают эффективность сочетания термодинамического моделирования и высокоинтенсивных технологий синтеза для разработки материалов твердотельного хранения водорода с улучшенными кинетическими характеристиками.

This paper presents the results of a study on the Mg-Al system aimed at enhancing hydrogen absorption kinetics through optimization of phase composition and synthesis parameters. To determine the optimal synthesis conditions, three- dimensional thermodynamic modeling was performed using Thermo-Calc, which enabled identification of the temperature–composition stability regions of the Mg17Al12 intermetallic phase while preserving the Mg solid solution. Based on these results, mechanical alloying of powders followed by spark plasma sintering at 350 ℃ was carried out. X-ray diffraction analysis confirmed that the experimentally obtained phase composition is consistent with the predicted results. Samples containing an optimal fraction of Mg17Al12 (30 wt.%) exhibited a twofold increase in hydrogen absorption rate compared to pure Mg at 300 ℃ and a pressure of 20 bar. The obtained results demonstrate the effectiveness of combining thermodynamic modeling with high-intensity synthesis techniques for the development of solid-state hydrogen storage materials with improved kinetic performance.

магниевые интерметаллидытвердотельное хранение водородамеханический синтезискровое плазменное спеканиефазовые превращениякинетика сорбции водородатермодинамическое моделированиеmagnesium intermetallicssolid-state hydrogen storagemechanical alloyingspark plasma sinteringphase transformationshydrogen sorption kineticsthermodynamic modelingДанная исследовательская работа выполнена при финансовой поддержке Комитета науки Министерства науки и высшего образования Республики Казахстан в рамках грантового финансирования МНВО РК проекта AP19574566 по теме «Разработка материалов-аккумуляторов водорода на основе Mg-Ni-Ce».ReferencesLi, Z., Zhang, M., Xu, H. Study of Heat Transfer, Thermal Dynamics, and Reaction Kinetics in Hydrogenation/Dehydrogenation Processes for Mg-Based Metal Hydride Hydrogen Storage // Energies. – 2025. – Vol. 18(11). – Art. 2924. – https://doi.org/10.3390/en18112924Li, Z., Zhang, M., Xu, H. 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The authors declare that there are no conflicts of interest present.