V. I. Pudov , Yu. I. Komolikov
PROSPECTS FOR IMPROVING THE MECHANICAL PROPERTIES OF AN ALUMINUM-ZIRCONIUM COMPOSITE BY ADDING ULTRAFINE Al2O3 POWDER SYNTHESIZED BY NITRATE COMBUSTION
DOI: 10.17804/2410-9908.2023.6.090-097 The paper presents the results of studying the mechanisms of sintering and properties of an Al2O3–ZrO2 composite doped with ultrafine Al2O3 powder (UFP) synthesized by burning nitrates. The material is sintered at temperatures ranging between 1450 and 1550 °C with the analysis of its physical and mechanical properties. It is shown that, as the sintering temperature and Al2O3 UFP concentration increase, linear shrinkage, microhardness, and strength naturally grow (the maximum values at 1550 ℃ are 27.8%, 19 GPa, and 357 MPa, respectively). The introduction of the Al2O3 UFP into the composite makes it possible to achieve an apparent density of 4.20 g/cm3 even at a sintering temperature of 1550 ℃.
Acknowledgements: The work was performed under a state assignment from the Russian Ministry of Science and Higher Education, theme Diagnostics, No 122021000030-1. Keywords: ultrafine powders, zirconium dioxide, aluminum oxide, ceramics, apparent density, microhardness Bibliography:
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В. И. Пудов, Ю. И. Комоликов
ПЕРСПЕКТИВЫ УЛУЧШЕНИЯ МЕХАНИЧЕСКИХ СВОЙСТВ АЛЮМО-ЦИРКОНИЕВОГО КОМПОЗИТА ДОБАВКОЙ УЛЬТРАДИСПЕРСНОГО ПОРОШКА Al2O3, СИНТЕЗИРОВАННОГО МЕТОДОМ СЖИГАНИЯ НИТРАТОВ
Приведены результаты исследования закономерностей спекания и свойств композита на основе системы Al2O3–ZrO2 c добавкой ультрадисперсного порошка (УДП) Al2O3, синтезированного методом сжигания нитратов. Спекание материала проводили в интервале температур 1450–1550 ℃ с анализом физико-механических свойств материала. Показано, что с повышением температуры спекания и концентрации УДП Al2O3 наблюдается закономерный рост линейной усадки, микротвердости и прочности (максимальные значения при 1550 ℃ – 27,8 %, 19 ГПа и 357 МПа соответственно). Введение УДП Al2O3 в состав композита позволяет уже при температуре спекания 1550 ℃ достичь кажущейся плотности 4,20 г/см3.
Благодарности: Работа выполнена в рамках государственного задания Минобрнауки России (тема «Диагностика» № 122021000030-1). Ключевые слова: ультрадисперсные порошки, диоксид циркония, оксид алюминия, керамика, кажущаяся плотность, микротвердость Библиография:
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- Carter C. B., Norton M. G. Ceramic materials: science and engineering. – New York : Springer, 2007. – 716 p.
- Абызов А. М. Оксид алюминия и алюмооксидная керамика (обзор). Ч. 2. Зарубежные производители алюмооксидной керамики. Технологии и исследования в области алюмооксидной керамики. // Новые огнеупоры. – Т. 2. – С. 13–22. – DOI: 10.17073/1683-4518-2019-2-13-22.
- Ceramic Materials: Processes, Properties and Applications / ed. by Ph. Boch, J.-C. Niepce. – ISTE, 2007. – 573 p.
- A novel method for fabricating brick-mortar structured alumina-zirconia ceramics with high toughness / B. Zhang, C. Wang, Y. Zhang, X. Zhang, J. Yang // Journal of the European Ceramic Society. – 2023. – Vol. 43 (2). – DOI: 10.1016/j.jeurceramsoc.2022.10.013.
- Low-temperature fabrication of Al2O3-ZrO2 (Y2O3) nanocomposites through hot pressing of amorphous powders / X. Xu, J. Liu, W. Hong, H. Du, F. Hou // Ceramics International. – 2016. – Vol. 42 (13). – P. 15065–15071. – DOI: 10.1016/j.ceramint.2016.06.168.
- Glycine-nitrate combustion synthesis of finely dispersed alumina / V. D. Zhuravlev, V. G. Vasilyev, E. V. Vladimirova, V. G. Shevchenko, I. G. Grigorov, V. G. Bamburov, A. R. Beketov, M. V. Baranov // Glass Physics and Chemistry. – 2010. – Vol. 36 (4). – P. 506–512. – DOI: 10.1134/S1087659610040164.
- Stability of ceramics based on ZrO2 doped with Y2O3 under hydrothermal action / Yu. I. Komolikov, I. D. Kashcheev, V. R. Khrustov, V. I. Pudov // Refractories and Industrial Ceramics. – 2020. – Vol. 61 (4). – P. 424–427. – DOI: 10.1007/s11148-020-00497-x.
- Solution combustion synthesis of α-Al2O3 using urea / V. D. Zhuravlev, V. G. Bamburov, A. R. Beketov, L. A. Perelyaeva, I. V. Baklanova, O. V. Sivtsova, E. V. Vasilyev, V. G. Vladimirova, V. G. Shevchenko, I. G. Grigorov // Ceramics International. – 2013. – Vol. 39 (2). – P. 1379–1384. – DOI: 10.1016/j.ceramint.2012.07.078.
Библиографическая ссылка на статью
Pudov V. I., Komolikov Yu. I. Prospects for Improving the Mechanical Properties of An Aluminum-Zirconium Composite by Adding Ultrafine Al 2o 3 Powder Synthesized by Nitrate Combustion // Diagnostics, Resource and Mechanics of materials and structures. -
2023. - Iss. 6. - P. 90-97. - DOI: 10.17804/2410-9908.2023.6.090-097. -
URL: http://dream-journal.org/issues/2023-6/2023-6_435.html (accessed: 23.11.2024).
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