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Microstructural Analysis and Mechanical Properties of Pb(Zr,Ti)O3 Fibers Derived by Different Processing Routes

Dittmer, Robert and Clemens, Frank and Schoenecker, Andreas and Scheithauer, Uwe and Ismael, Marina Rojas and Graule, Thomas :
Microstructural Analysis and Mechanical Properties of Pb(Zr,Ti)O3 Fibers Derived by Different Processing Routes.
[Online-Edition: http://dx.doi.org/10.1111/j.1551-2916.2010.03742.x]
In: Journal of the American Ceramic Society, 93 (8) pp. 2403-2010. ISSN 00027820
[Article] , (2010)

Official URL: http://dx.doi.org/10.1111/j.1551-2916.2010.03742.x

Abstract

Piezoceramic fibers are broadly used for advanced ultrasound transducers and composite sensors and actuators for smart system applications. Different techniques (ALCERU® cellulose spinning technique, extrusion, and polysulfone process) have been developed for fiber fabrication, although there is still an essential need to evaluate the mechanical and electromechanical performance of these fibers. In this study, the microstructure and mechanical properties have been investigated for different fibers fabricated by the three routes. Because of the same sintering program, the fibers showed mainly a similar grain size (1–2 μm) and porosity (2%–6%). A tensile strength up to 72 MPa could be measured for PZT fibers with a diameter of 250 μm produced by the cellulose spinning technique. The Young's modulus varied between 30 and 60 GPa. Stress–strain deformation showed nonlinearity behavior, which could be attributed to ferroelastic domain switching. The threshold for domain switching (proportional limit) of the deformation curve had decreased by increasing the diameter of the fiber. No correlation between fiber processing and proportional limit could be observed.

Item Type: Article
Erschienen: 2010
Creators: Dittmer, Robert and Clemens, Frank and Schoenecker, Andreas and Scheithauer, Uwe and Ismael, Marina Rojas and Graule, Thomas
Title: Microstructural Analysis and Mechanical Properties of Pb(Zr,Ti)O3 Fibers Derived by Different Processing Routes
Language: English
Abstract:

Piezoceramic fibers are broadly used for advanced ultrasound transducers and composite sensors and actuators for smart system applications. Different techniques (ALCERU® cellulose spinning technique, extrusion, and polysulfone process) have been developed for fiber fabrication, although there is still an essential need to evaluate the mechanical and electromechanical performance of these fibers. In this study, the microstructure and mechanical properties have been investigated for different fibers fabricated by the three routes. Because of the same sintering program, the fibers showed mainly a similar grain size (1–2 μm) and porosity (2%–6%). A tensile strength up to 72 MPa could be measured for PZT fibers with a diameter of 250 μm produced by the cellulose spinning technique. The Young's modulus varied between 30 and 60 GPa. Stress–strain deformation showed nonlinearity behavior, which could be attributed to ferroelastic domain switching. The threshold for domain switching (proportional limit) of the deformation curve had decreased by increasing the diameter of the fiber. No correlation between fiber processing and proportional limit could be observed.

Journal or Publication Title: Journal of the American Ceramic Society
Volume: 93
Number: 8
Divisions: 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: 11 Feb 2013 10:48
Official URL: http://dx.doi.org/10.1111/j.1551-2916.2010.03742.x
Identification Number: doi:10.1111/j.1551-2916.2010.03742.x
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