Characterisation of mechanical and fracture behaviour of Al2O3/ZrO2/BaTiO3 laminate by indentation

0531742 - ÚFM 2021 RIV GB eng J - Článek v odborném periodiku
Hadraba, Hynek - Chlup, Zdeněk - Drdlík, D. - Šiška, Filip
Characterisation of mechanical and fracture behaviour of Al2O3/ZrO2/BaTiO3 laminate by indentation.
Journal of the European Ceramic Society. Roč. 40, č. 14 (2020), s. 4799-4807. ISSN 0955-2219. E-ISSN 1873-619X
Grant CEP: GA MŠMT(CZ) LQ1601; GA ČR(CZ) GA17-08153S
Institucionální podpora: RVO:68081723
Klíčová slova: Laminate * Electrophoretic deposition * Barium titanate * Crack propagation * Energy harvesting
Obor OECD: Ceramics
Impakt faktor: 5.302, rok: 2020
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S0955221920302934?via%3Dihub

The paper describes the preparation of laminate piezo-ceramic composite consisting of Al2O3, ZrO2 and BaTiO3 layers and proves the idea of residual stresses utilization for crack deflection and handling with the brittleness of BaTiO3. The laminate was prepared by alternate electrophoretic deposition. Although the laminate was sintered at 1300 degrees C and consisted of layers having a density between 57 % (ZrO2) and 73 % (BaTiO3), the hardness and elastic modulus of layers corresponded to those of free sintered monolithic ceramics at a comparable level of porosity. The crack deflection at the interface between individual layers was observed having the same effect and magnitude as deflection observed in the case of fully dense Al2O3/ZrO2 laminates. An interlayer developed on the interface between Al2O3 and BaTiO3 had no negative impact on crack propagation.
Trvalý link: http://hdl.handle.net/11104/0310364