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Simultaneous Enhancement of Fracture Toughness and Unipolar Strain in Pb(Zr,Ti)O3-ZrO2Composites Through Composition Adjustment

Seo, Yo-Han and Koruza, Jurij and Benčan, Andreja and Malič, Barbara and Rödel, Jürgen and Webber, Kyle G. (2014):
Simultaneous Enhancement of Fracture Toughness and Unipolar Strain in Pb(Zr,Ti)O3-ZrO2Composites Through Composition Adjustment.
In: Journal of the American Ceramic Society, pp. n/a-n/a, ISSN 00027820, [Online-Edition: http://dx.doi.org/10.1111/jace.12929],
[Article]

Abstract

The influence of second phase zirconia particles on the electrical properties and fracture behavior of various polycrystalline soft Pb(Zr1−xTix)O3 (PZT) compositions was investigated. PZT composites with yttria-stabilized tetragonal zirconia particles exhibited enhanced crack resistance in comparison to monolithic compositions, regardless of the PZT composition. The addition of zirconia, however, was found to change the PZT composition through the diffusion of zirconium, resulting in variations in the observed piezoelectric and ferroelectric responses. Through the tailoring of the PZT matrix composition, the large electromechanical response and enhanced fracture toughness could be retained. The variation in both small and large signal properties is contrasted to fracture results and crystal structure changes, as determined by X-ray diffraction.

Item Type: Article
Erschienen: 2014
Creators: Seo, Yo-Han and Koruza, Jurij and Benčan, Andreja and Malič, Barbara and Rödel, Jürgen and Webber, Kyle G.
Title: Simultaneous Enhancement of Fracture Toughness and Unipolar Strain in Pb(Zr,Ti)O3-ZrO2Composites Through Composition Adjustment
Language: English
Abstract:

The influence of second phase zirconia particles on the electrical properties and fracture behavior of various polycrystalline soft Pb(Zr1−xTix)O3 (PZT) compositions was investigated. PZT composites with yttria-stabilized tetragonal zirconia particles exhibited enhanced crack resistance in comparison to monolithic compositions, regardless of the PZT composition. The addition of zirconia, however, was found to change the PZT composition through the diffusion of zirconium, resulting in variations in the observed piezoelectric and ferroelectric responses. Through the tailoring of the PZT matrix composition, the large electromechanical response and enhanced fracture toughness could be retained. The variation in both small and large signal properties is contrasted to fracture results and crystal structure changes, as determined by X-ray diffraction.

Journal or Publication Title: Journal of the American Ceramic Society
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Elektromechanik von Oxiden
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 14 Apr 2014 14:11
Official URL: http://dx.doi.org/10.1111/jace.12929
Identification Number: doi:10.1111/jace.12929
Funders: We are grateful for the financial support from the European Union under the Seventh Framework project HIgh-PERformance Piezoelectric Actuators (HIPER-Act)., Y.H.S. would like to thank the Leibniz programme of the Deutsche Forschungsgemeinschaft under RO 954/22 for financial support.
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