Simultaneous enhancement of fracture toughness and unipolar strain in Pb (Zr, Ti) O 3- ZrO 2 composites through composition adjustment

Yo Han Seo; Jurij Koruza; Andreja Benčan; Barbara Malič; Jürgen Rödel; Kyle G. Webber

doi:10.1111/jace.12929

Simultaneous enhancement of fracture toughness and unipolar strain in Pb (Zr, Ti) O ₃- ZrO ₂ composites through composition adjustment

Yo Han Seo, Jurij Koruza, Andreja Benčan, Barbara Malič, Jürgen Rödel, Kyle G. Webber^*

^*Corresponding author for this work

Institute of Materials Science, Joining and Forming (3030)

Research output: Contribution to journal › Article › peer-review

Abstract

The influence of second phase zirconia particles on the electrical properties and fracture behavior of various polycrystalline soft Pb(Zr _1-xTi_x)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.

Original language	English
Pages (from-to)	1582-1588
Number of pages	7
Journal	Journal of the American Ceramic Society
Volume	97
Issue number	5
DOIs	https://doi.org/10.1111/jace.12929
Publication status	Published - May 2014

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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title = "Simultaneous enhancement of fracture toughness and unipolar strain in Pb (Zr, Ti) O 3- ZrO 2 composites through composition adjustment",

abstract = "The influence of second phase zirconia particles on the electrical properties and fracture behavior of various polycrystalline soft Pb(Zr 1-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.",

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T1 - Simultaneous enhancement of fracture toughness and unipolar strain in Pb (Zr, Ti) O 3- ZrO 2 composites through composition adjustment

AU - Seo, Yo Han

AU - Koruza, Jurij

AU - Benčan, Andreja

AU - Malič, Barbara

AU - Rödel, Jürgen

AU - Webber, Kyle G.

PY - 2014/5

Y1 - 2014/5

N2 - The influence of second phase zirconia particles on the electrical properties and fracture behavior of various polycrystalline soft Pb(Zr 1-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.

AB - The influence of second phase zirconia particles on the electrical properties and fracture behavior of various polycrystalline soft Pb(Zr 1-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.

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Simultaneous enhancement of fracture toughness and unipolar strain in Pb (Zr, Ti) O ₃- ZrO ₂ composites through composition adjustment

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