Al2O3 and ZrO2 ceramic materials obtained by sol-gel method

Lebedeva Yu.E., Shchegoleva N.E., Voronov V.A., Solntsev St.S.
UDC
666.7
DOI
10.18577/2307-6046-2021-0-4-61-73
Article PDF (Russian) (1.45 MB)
How to cite
Lebedeva Yu.E., Shchegoleva N.E., Voronov V.A., Solntsev St.S. Al2O3 and ZrO2 ceramic materials obtained by sol-gel method // Proceedings of VIAM. 2021. No. 4. DOI: 10.18577/2307-6046-2021-0-4-61-73. URL: https://test.viam.ru/en/journal/2021/4/5
Keywords
aluminum oxide, zirconium oxide, ceramic materials, nano powders, sintering, sol-gel method.
Abstract

The rheological properties, processes of structure and phase formation of the Al2O3–ZrO2 system compositions obtained by the sol-gel method have been investigated. The temperature range of crystallization of the compositions is 900–1100 °C. With an increase in the concentration of zirconium dioxide in the system, the temperature of the transition from the tetragonal to the monoclinic phase decreases. The effect of the ratio of the components in the initial solutions and the temperature regime of heat treatment of gels on the physicochemical properties of nanopowders and sintered materials has been studied. Ceramic materials of eutectic composition give the highest density and lower values ​​of porosity and water absorption.

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