Study of Phase Transformations in ZrO 2 Ceramics Stabilized by Y 2 O 3 and Their Role in Changing Strength Characteristics and Heat Resistance

Inesh E. Kenzhina (), Artem L. Kozlovskiy, Meiram Begentayev, Petr Blynskiy, Aktolkyn Tolenova and Anatoli I. Popov
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Inesh E. Kenzhina: Department of General Physics, Satbayev University, 22 Satbayev Street, Almaty 050013, Kazakhstan
Artem L. Kozlovskiy: Department of General Physics, Satbayev University, 22 Satbayev Street, Almaty 050013, Kazakhstan
Meiram Begentayev: Department of General Physics, Satbayev University, 22 Satbayev Street, Almaty 050013, Kazakhstan
Petr Blynskiy: Department of General Physics, Satbayev University, 22 Satbayev Street, Almaty 050013, Kazakhstan
Aktolkyn Tolenova: Department of General Physics, Satbayev University, 22 Satbayev Street, Almaty 050013, Kazakhstan
Anatoli I. Popov: Institute of Solid State Physics, University of Latvia, 8 Kengaraga Str, LV-1063 Riga, Latvia

Sustainability, 2025, vol. 17, issue 10, 1-18

Abstract: The results obtained reflect the determination of the possibility of the stability enhancement of the strength and thermal parameters of zirconium-containing ceramic materials via the addition of a stabilizing additive in the form of Y 2 O 3 . According to the data obtained, a connection between phase transformations caused by the addition of the stabilizing Y 2 O 3 additive and an increase in strength characteristics, the growth of which is also due to the formation of the dispersion hardening effect during grain size reduction, was established. It was found that the formation of the stabilized Zr(Y)O 2 phase results in thermal conductivity reduction, while the formation of the perovskite phase YZrO 3 has a positive effect on the thermophysical parameters of ceramics. It was determined that the change in phase composition associated with the formation of the tetragonal Zr(Y)O 2 phase at low dopant concentrations leads to an increase in strength characteristics, but a decrease in thermal conductivity, while the formation of the YZrO 3 phase in the structure contributes to a growth not only in strength, but also thermophysical parameters.

Keywords: ZrO 2 ceramics; stability enhancement of strength properties; polymorphic phase transformations; high-strength ceramics; changes in thermophysical properties (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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