期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 94, 期 9, 页码 2728-2730出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1551-2916.2011.04677.x
关键词
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资金
- Deutsche Forschungsgemeinschaft [RO 954/22]
- Office of Naval Research (ONR) [N00014-06-C-0214]
The crack growth resistance behavior of single crystal and polycrystalline 0.71Pb(Mg1/3Nb2/3)O-3-0.29PbTiO(3) (PMN-29% PT) was determined with compact-tension specimens. Two different single crystal orientations were produced by the solid-state crystal growth technique (SSCG) and characterized, allowing for the direct comparison to polycrystalline material. Single crystal R-curve behavior was observed to be anisotropic, which is explained by the effects of ferroelasticity and stress-induced phase transformations on toughening. Results of the polycrystalline samples display comparable toughness to that observed in single crystal measurements.
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