Effects of Low-Modulus BN Inclusions on Properties of Y-TZP Ceramic; Inorganic Materials: Applied Research; Vol. 10, iss. 5

Effects of Low-Modulus BN Inclusions on Properties of Y-TZP Ceramic; Inorganic Materials: Applied Research; Vol. 10, iss. 5

Dades bibliogràfiques
Parent link:Inorganic Materials: Applied Research
Vol. 10, iss. 5.— 2019.— [P. 1159–1163]
Autor principal: Buyakov A. S. Ales Sergeevich
Autor corporatiu: Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Отделение материаловедения
Altres autors: Mirovoy Yu. A. Yury Aleksandrovich, Buyakova S. P. Svetlana Petrovna
Sumari:Title screen
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.
Режим доступа: по договору с организацией-держателем ресурса
Idioma:anglès
Publicat: 2019
Matèries:
электронный ресурс
труды учёных ТПУ
ceramic
composite
fracture toughness
dissipative structure
multilevel hardening
zirconia
boron nitride
керамика
диссипативные структуры
цирконий
нитрид бора
Accés en línia:https://doi.org/10.1134/S2075113319050058
Format: Electrònic Capítol de llibre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664225

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