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СпутникиРНSpaceXРоскосмосNASAНазвание: E-beam Sintering of Neodymium Tungstate and its Composite with Nickel (II) and Copper (II) Oxides
Авторы: Eremeev, N. F.; Sadovskaya, E. M.; Krieger, T. A.; Bulavchenko, O. A.; Kaichev, V. O.; Kremneva, A. M.; Suprun, A. A.; Mostefe Khalid Mohammed; Mikhailenko, Mikhail V.; Korobeynikov, Mikhail M.; Sadykov, V. A.; Bespalko, Yu. N.
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https://elar.urfu.ru/handle/10995/157772
| Название: | E-beam Sintering of Neodymium Tungstate and its Composite with Nickel (II) and Copper (II) Oxides |
| Авторы: | Eremeev, N. F. Sadovskaya, E. M. Krieger, T. A. Bulavchenko, O. A. Kaichev, V. O. Kremneva, A. M. Suprun, A. A. Mostefe Khalid Mohammed Mikhailenko, Mikhail V. Korobeynikov, Mikhail M. Sadykov, V. A. Bespalko, Yu. N. |
| Дата публикации: | 2026 |
| Издатель: | Ural Federal University Уральский федеральный университет |
| Библиографическое описание: | E-beam Sintering of Neodymium Tungstate and its Composite with Nickel (II) and Copper (II) Oxides / N. Eremeev, E. Sadovskaya, T. Krieger, O. Bulavchenko, V. Kaichev, A. Kremneva, E. Suprun, Mostefe Khalid Mohammed, M. Mikhailenko, M. Korobeynikov, V. Sadykov, Yu.Bespalko // Electrochemical Materials and Technologies. — 2026. — Vol. 5. № 3. — № 20265077. |
| Аннотация: | Neodymium tungstates and their composites with metal alloys, such as NiCu, have emerged as promising materials for hydrogen separation membranes due to their high proton conductivity and stability in CO2-containing atmospheres. The fabrication of gas-tight ceramics based on these materials constitutes a distinct challenge. A promising approach to address this issue is the utilization of advanced sintering techniques, such as radiation-thermal sintering using an electron beam. The present study investigates the impact of radiation-thermal sintering temperature on the structural, textural properties, hydration ability, and oxygen mobility of Nd5.5WO11.25− oxides and NiO–CuO–Nd5.5WO11.25− composites, the precursors of NiCu alloy – Nd5.5WO11.25− materials for hydrogen separation membranes. The main phase of the Nd5.5WO11.25− samples is defective double fluorite, while their composites contain various nickel and copper oxides along with the neodymium tungstate phase. The attainment of gas-tightness in Nd5.5WO11.25− samples is achieved even at relatively low sintering temperatures (1200–1300 °C), which is unattainable through sintering in a furnace. Conversely, the composite samples exhibit high porosity. Hence, the procedure of preparing the NiO–CuO–Nd5.5WO11.25− composites required further optimization. Nd5.5WO11.25− sintered by e-beam at 1100–1300 °C exhibit optimal hydration properties. The highest oxygen mobility is demonstrated for the samples sintered at 1100 and 1200 °C (D* up to ~ 10−8 cm2/s), which is promising in the context of the incorporation and transport of protons in hydrogen separation membranes. Consequently, e-beam sintering emerges as a promising method for producing proton conductive ceramics based on Nd tungstate. |
| Ключевые слова: | RADIATION-THERMAL SINTERING NEODYMIUM TUNGSTATE COMPOSITE STRUCTURAL CHARACTERISTICS TEXTURAL CHARACTERISTICS THERMOGRAVIMETRIC ANALYSIS |
| URI: | https://elar.urfu.ru/handle/10995/157772 |
| ISSN: | 2949-0561 |
| Сведения о поддержке: | This work was supported by the Russian Science Foundation, Project No. 23-73-00045. Mathematical modeling of isotope exchange data was performed in the framework of the budget project of the Boreskov Institute of Catalysis SB RAS (project FWUR-2024-0038). |
| Карточка проекта РНФ: | 23-73-00045 |
| Источники: | Electrochemical Materials and Technologies. 2026. Vol. 5. № 3 |
| Располагается в коллекциях: | Electrochemical Materials and Technologies |
Файлы этого ресурса:
| Файл | Описание | Размер | Формат | |
|---|---|---|---|---|
| emt_2026_v5_3_06.pdf | 1,41 MB | Adobe PDF | Просмотреть/Открыть |
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