Počet záznamů: 1  

Dilatometric study of anisotropic sintering of alumina/zirconia laminates with controlled fracture behaviour

  1. 1.
    0480425 - UFM-A 2018 RIV GB eng J - Článek v odborném periodiku
    Maca, K. - Pouchlý, V. - Drdlík, D. - Hadraba, Hynek - Chlup, Zdeněk
    Dilatometric study of anisotropic sintering of alumina/zirconia laminates with controlled fracture behaviour.
    Journal of the European Ceramic Society. Roč. 37, č. 14 (2017), s. 4287-4295. ISSN 0955-2219
    Grant CEP: GA ČR(CZ) GA15-06390S; GA MŠk(CZ) LQ1601
    Institucionální podpora: RVO:68081723
    Klíčová slova: Alumina/zirconia laminate * Crack deflection * Master sintering curve * Sintering shrinkage
    Kód oboru RIV: JH - Keramika, žáruvzdorné materiály a skla
    Obor OECD: Ceramics
    Impakt faktor: 3.794, rok: 2017

    Al2O3 and ZrO2 monoliths as well as layered Al2O3/ZrO2 composites with a varying layer thickness ratio were prepared by electrophoretic deposition. The sintering shrinkage of these materials in the transversal (perpendicular to the layers, i.e. in the direction of deposition) as well as in the longitudinal (parallel with layers interfaces) direction were monitored using high-temperature dilatometry. The sintering of layered composites exhibited anisotropic behaviour. The detailed study revealed that sintering shrinkage in the longitudinal direction was governed by alumina (material with a higher sintering temperature), whilst in the transversal direction it was accelerated by the directional sintering of zirconia layers. For interpretation of such anisotropic sintering kinetics, the Master Shrinkage Curve model was developed and applied. Crack propagation through laminates with a different alumina/zirconia thickness ratio was described with the help of scanning electron microscopy and confocal laser microscopy.
    Trvalý link: http://hdl.handle.net/11104/0276862