Anisotropy of Mechanical Properties of Zirconia-Based Ceramics Tested for Bending

Anisotropy of Mechanical Properties of Zirconia-Based Ceramics Tested for Bending The effect of bending stress s of different magnitudes and signs on the fracture toughness K 1c of polycrystalline specimens of partially stabilized zirconia (PSZ) is considered. A method for testing pre-stressed PSZ specimens by Vickers indentation using a four-point bending scheme is proposed. The dimensions of the impression from a diamond pyramid and the length of the radial cracks generated thereby are determined. An anisotropy of strength properties is revealed in the specimens tested, which is explained by the involvement of two mechanisms: forcing action of an external stress on the crack opening and activation of the tetragonal- monoclinic phase transition in the tensile stress field. Refractories and Industrial Ceramics Springer Journals

Anisotropy of Mechanical Properties of Zirconia-Based Ceramics Tested for Bending

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Kluwer Academic Publishers-Plenum Publishers
Copyright © 2004 by Plenum Publishing Corporation
Materials Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Materials
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