Synthesis and Study of Composite Materials in the ZrO2(Y2O3)–MgAl2O4 System
- Authors: Morozova L.V.1, Drozdova I.A.1, Kalinina M.V.1
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Affiliations:
- Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences
- Issue: Vol 45, No 5 (2019)
- Pages: 388-394
- Section: Article
- URL: https://journals.rcsi.science/1087-6596/article/view/217361
- DOI: https://doi.org/10.1134/S1087659619050092
- ID: 217361
Cite item
Abstract
Powders–precursors of a tetragonal solid solution based on partially stabilized zirconium dioxide (t-ZrO2) and aluminum-magnesium spinel (MgAl2O4) are synthesized using the method of the cocrystallization of solutions of nitrate salts from which nanocrystalline (<100 nm) composite materials are fabricated at 1400°C in the ZrO2(Y2O3)–MgAl2O4 system with an open porosity of 3%. The structure, physical–mechanical properties, and thermal stability of the nanocomposites are investigated. It is established that the introduction of MgAl2O4 into the matrix of the solid t-ZrO2 solution increases the thermal resistance of the ceramics under the thermal cycling conditions (20–1000°С). The effect of thermal cycling on the phase composition, hardness, and bending strength of the ceramics in the ZrO2(Y2O3)–MgAl2O4 system is investigated.
About the authors
L. V. Morozova
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences
Author for correspondence.
Email: morozova_l_v@mail.ru
Russian Federation, St. Petersburg, 199034
I. A. Drozdova
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences
Email: morozova_l_v@mail.ru
Russian Federation, St. Petersburg, 199034
M. V. Kalinina
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences
Email: morozova_l_v@mail.ru
Russian Federation, St. Petersburg, 199034