Al2O3-Based Ceramic Composites with a High Brittle Fracture Resistance
- Авторы: Podzorova L.I.1, Il’icheva A.A.1, Pen’kova O.I.1, Antonova O.S.1, Baikin A.S.1, Konovalov A.A.1
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Учреждения:
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
- Выпуск: Том 55, № 6 (2019)
- Страницы: 628-633
- Раздел: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/158715
- DOI: https://doi.org/10.1134/S0020168519060128
- ID: 158715
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Аннотация
We examine synthesis conditions of precursors to ZrO2–Al2O3–CeO2 powders modified with calcium cations. The precipitation procedure and the aging of reaction systems of precursors to the synthesized composites are shown to influence the morphology and particle size of the nanopowders and the evolution of the phase composition, microstructure, and mechanical characteristics of composites prepared from them. The composites offer a high brittle fracture resistance due to the combined effect of transformation and dispersion hardening owing to the presence of T-ZrO2-based solid solutions and calcium hexaaluminates (bending strength, up to 1000 MPa; fracture toughness KIc, up to 10.5 MPa m1/2).
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Об авторах
L. Podzorova
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Автор, ответственный за переписку.
Email: ludpodzorova@gmail.com
Россия, Leninskii pr. 49, Moscow, 119334
A. Il’icheva
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: ludpodzorova@gmail.com
Россия, Leninskii pr. 49, Moscow, 119334
O. Pen’kova
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: ludpodzorova@gmail.com
Россия, Leninskii pr. 49, Moscow, 119334
O. Antonova
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: ludpodzorova@gmail.com
Россия, Leninskii pr. 49, Moscow, 119334
A. Baikin
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: ludpodzorova@gmail.com
Россия, Leninskii pr. 49, Moscow, 119334
A. Konovalov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: ludpodzorova@gmail.com
Россия, Leninskii pr. 49, Moscow, 119334
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