Effects of Low-Modulus BN Inclusions on Properties of Y-TZP Ceramic
- Авторы: Buyakov A.1,2,3, Mirovoy Y.2, Buyakova S.1,2,3
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Учреждения:
- Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences
- School of Advanced Manufacturing Technologies, Tomsk Polytechnic University
- Physical-Technical Faculty, Tomsk State University
- Выпуск: Том 10, № 5 (2019)
- Страницы: 1159-1163
- Раздел: General-Purpose Materials
- URL: https://journals.rcsi.science/2075-1133/article/view/208091
- DOI: https://doi.org/10.1134/S2075113319050058
- ID: 208091
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Аннотация
We investigate the structure and properties of ceramic based on tetragonal zirconia (Y-TZP) containing low-modulus inclusions of hexagonal boron nitride (h-BN). (Y-TZP)(h-BN) ceramic samples with low h-BN content exhibit increased fracture toughness (K1C). The highest fracture toughness was observed for (Y-TZP)(0.5 wt % h-BN) ceramic: K1C = 12 ± 0.53 MPa m1/2. The increase in failure viscosity caused by incorporation of low-modulus inclusions (i.e., h-BN) is due to two dissipative mechanisms: the martensite transformation of the ZrO2 matrix and crack arrest at relatively weak interfaces between the matrix and low-modulus inclusions of h-BN. As the proportion of h-BN increases, the contribution of martensite transformation to the fracture toughness diminishes, a consequence of the grain size of tetragonal zirconia diminishing, which makes this phase stable.
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Об авторах
A. Buyakov
Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences; School of Advanced Manufacturing Technologies, Tomsk Polytechnic University; Physical-Technical Faculty, Tomsk State University
Автор, ответственный за переписку.
Email: alesbuyakov@gmail.com
Россия, Tomsk, 634055; Tomsk, 634050; Tomsk, 634050
Yu. Mirovoy
School of Advanced Manufacturing Technologies, Tomsk Polytechnic University
Автор, ответственный за переписку.
Email: y.a.mirovoy@gmail.com
Россия, Tomsk, 634050
S. Buyakova
Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences; School of Advanced Manufacturing Technologies, Tomsk Polytechnic University; Physical-Technical Faculty, Tomsk State University
Автор, ответственный за переписку.
Email: sbuyakova@ispms.tsc.ru
Россия, Tomsk, 634055; Tomsk, 634050; Tomsk, 634050