A Specific Feature in the Fracture of Polycrystalline Zirconia Ceramic

A Specific Feature in the Fracture of Polycrystalline Zirconia Ceramic The effect of indentor load F and V-notch tip radius r on the crack resistance factor K Ic of ZrO2 + 3 mol.% Y2O3 ceramic is studied by microindentation and bending methods. Materials composed of 100% tetragonal phase (T-phase) and 70 – 80% T-phase were used. In both materials, an increase in F and a decrease in r cause a decrease in K Ic . The higher sensitivity of K Ic to F and r is observed in 100% T-phase specimens. This effect is explained by the involvement of martensite-type phase transformations. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

A Specific Feature in the Fracture of Polycrystalline Zirconia Ceramic

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2002 by Plenum Publishing Corporation
Subject
Materials Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Materials
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1023/A:1019607212457
Publisher site
See Article on Publisher Site

Abstract

The effect of indentor load F and V-notch tip radius r on the crack resistance factor K Ic of ZrO2 + 3 mol.% Y2O3 ceramic is studied by microindentation and bending methods. Materials composed of 100% tetragonal phase (T-phase) and 70 – 80% T-phase were used. In both materials, an increase in F and a decrease in r cause a decrease in K Ic . The higher sensitivity of K Ic to F and r is observed in 100% T-phase specimens. This effect is explained by the involvement of martensite-type phase transformations.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Oct 13, 2004

References

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