Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1474512 | Journal of the European Ceramic Society | 2011 | 8 Pages |
Abstract
(0Â 0Â 1)-oriented 3Â mol% yttria stabilized tetragonal zirconia (3Y-TZP) has been developed by reactive synthesis of undoped pure monoclinic zirconia and co-precipitated 8Â mol% yttria-stabilized zirconia (8Y-ZrO2). The dispersed pure monoclinic ZrO2 powder, having magnetic anisotropy, was first aligned in a strong magnetic field and co-sintered in a randomly distributed cubic 8Y-ZrO2 fine matrix powder. The reactive sintering resulted in a 3Y-TZP ceramic with a (0Â 0Â 1) orientation. The (0Â 0Â 1)-oriented 3Y-TZP showed a substantial toughness anisotropy, i.e. the toughness along the [0Â 0Â 1] direction is 54% higher than that of its perpendicular direction. Moreover, the toughness along the [0Â 0Â 1] direction is 49% higher than that of a non-textured isotropic reactively synthesized 3Y-TZP and 110% higher than that of an isotropic co-precipitated powder based 3Y-TZP. The substantially enhanced toughness was interpreted in terms of the tetragonal to monoclinic martensitic phase transformability.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Li Zhang, Jef Vleugels, Larysa Darchuk, Omer Van der Biest,