Effect of modifying zirconium oxide additive on the properties of ceramic materials of the Y2O3–Al2O3–SiO2 system obtained by the sol-gel method

Lebedeva Yu.E., Shchegoleva N.E., Voronov V.A., Kovaleva V.S., Chaynikova A.S.
UDC
661.183.4-911.48
DOI
10.18577/2307-6046-2021-0-10-67-78
Article PDF (Russian) (796.5 KB)
How to cite
Lebedeva Yu.E., Shchegoleva N.E., Voronov V.A., Kovaleva V.S., Chaynikova A.S. Effect of modifying zirconium oxide additive on the properties of ceramic materials of the Y2O3–Al2O3–SiO2 system obtained by the sol-gel method // Proceedings of VIAM. 2021. No. 10. DOI: 10.18577/2307-6046-2021-0-10-67-78. URL: https://test.viam.ru/en/journal/2021/10/7
Keywords
yttrium aluminosilicate system, zirconium oxide, ceramic materials, coatings, sintering, sol-gel method.
Abstract

The effect of the modifying additive ZrO2 on the rheological properties, the processes of structure and phase formation of the compositions of the Y2O3–Al2O3–SiO2 system obtained by the sol-gel method has been investigated. It was found that the temperature range of crystallization of the compositions of the Y2O3–Al2O3–SiO2 system with the addition of ZrO2 is 1020–1270 °C and with an increase in the concentration of zirconium oxide, the amount of the main crystalline phase of yttrium pyrosilicate (β-Y2Si2O7) decreases and the concentration of the zirconium-containing phase – the tetragonal modification of zirconium oxide and zirconium silicate ZrSiO4 -increases. 

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