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Compositional Dependence of R-curve Behavior in Soft Pb(Zr1−xTix)O3 Ceramics

Seo, Yo-Han and Benčan, Andreja and Koruza, Jurij and Malič, Barbara and Kosec, Marija and Webber, Kyle G. (2011):
Compositional Dependence of R-curve Behavior in Soft Pb(Zr1−xTix)O3 Ceramics.
In: Journal of the American Ceramic Society, pp. 4419-4425, 94, (12), ISSN 00027820, [Online-Edition: http://dx.doi.org/10.1111/j.1551-2916.2011.04889.x],
[Article]

Abstract

The compositional dependent fracture behavior of soft PZT (Pb0.99Ba0.01(Zr1−xTix)0.98Nb0.02O3) ceramics in the vicinity of the morphotropic phase boundary was characterized using compact-tension specimens. The compositions with 0.40 ≤ x ≤ 0.55 displayed an increasing fracture resistance with crack extension (R-curve behavior). It was observed that the rhombohedral composition and the compositions near the morphotropic phase boundary showed the largest toughness enhancement. R-curve behavior was found to be influenced by the ferroelastic coercive stress, saturated remanent strain, and elastic modulus, which were experimentally measured for each composition. X-ray diffraction measurements were performed and compared to the fracture results to investigate the impact of phase and lattice distortion on ferroelastic toughening behavior.

Item Type: Article
Erschienen: 2011
Creators: Seo, Yo-Han and Benčan, Andreja and Koruza, Jurij and Malič, Barbara and Kosec, Marija and Webber, Kyle G.
Title: Compositional Dependence of R-curve Behavior in Soft Pb(Zr1−xTix)O3 Ceramics
Language: English
Abstract:

The compositional dependent fracture behavior of soft PZT (Pb0.99Ba0.01(Zr1−xTix)0.98Nb0.02O3) ceramics in the vicinity of the morphotropic phase boundary was characterized using compact-tension specimens. The compositions with 0.40 ≤ x ≤ 0.55 displayed an increasing fracture resistance with crack extension (R-curve behavior). It was observed that the rhombohedral composition and the compositions near the morphotropic phase boundary showed the largest toughness enhancement. R-curve behavior was found to be influenced by the ferroelastic coercive stress, saturated remanent strain, and elastic modulus, which were experimentally measured for each composition. X-ray diffraction measurements were performed and compared to the fracture results to investigate the impact of phase and lattice distortion on ferroelastic toughening behavior.

Journal or Publication Title: Journal of the American Ceramic Society
Volume: 94
Number: 12
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Elektromechanik von Oxiden
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 05 Dec 2011 11:52
Official URL: http://dx.doi.org/10.1111/j.1551-2916.2011.04889.x
Identification Number: doi:10.1111/j.1551-2916.2011.04889.x
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