Study of Phase Transformations in ZrO2 Ceramics Stabilized by Y2O3 and Their Role in Changing Strength Characteristics and Heat Resistance

Авторы:

Begentayev, M. (Соавтор)

Kozlovskiy, A.L. (Соавтор)

Издательство:

Sustainability (Switzerland)

Дата издания

08.05.2025

На каком языке издана

Английский язык

ISSN

2071-1050

Область исследования

Инжиниринг и технологии

Тип исследования

Прикладное

Аннотация (краткое описание)

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 Y2O3. According to the data obtained, a connection between phase transformations caused by the addition of the stabilizing Y2O3 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)O2 phase results in thermal conductivity reduction, while the formation of the perovskite phase YZrO3 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)O2 phase at low dopant concentrations leads to an increase in strength characteristics, but a decrease in thermal conductivity, while the formation of the YZrO3 phase in the structure contributes to a growth not only in strength, but also thermophysical parameters.

Соответствие целям устойчивого развития (ЦУР)

9. 

Индустриализация, инновации и инфраструктура

URI

https://www.mdpi.com/2071-1050/17/10/4284

DOI

10.3390/su17104284

Тип публикаций

Статья

Практическое значение

The results of this study demonstrate the feasibility of improving the mechanical strength and thermophysical performance of zirconium-containing ceramic materials through yttrium oxide (Y₂O₃) stabilization. The established relationship between phase transformations and the resulting enhancement of strength and thermal properties provides a scientific basis for tailoring ceramic compositions for high-temperature applications. The formation of stabilized Zr(Y)O₂ and perovskite YZrO₃ phases enables the controlled adjustment of thermal conductivity and mechanical durability, making these materials promising for use as thermal barrier coatings, refractory components, aerospace structures, energy systems, and other engineering applications operating under extreme thermal and mechanical conditions.

Квартиль

Q1

Источник квартиля

SCImago (Scopus)

Impact Factor

3.3

Количество цитирований

5

Данный документ располагается в коллекциях

Международные публикации ученых SU

Scopus

Файлы документа

sustainability-17-04284-v2.pdf