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(Na1/2Bi1/2)TiO3‐based lead‐free co‐fired multilayer actuators with large strain and high fatigue resistance

Zhang, Haibo and Ma, Weigang and Xie, Bing and Zhang, Ling and Dong, Shuxaing and Fan, Pengyuan and Wang, Ke and Koruza, Jurij and Rödel, Jürgen (2019):
(Na1/2Bi1/2)TiO3‐based lead‐free co‐fired multilayer actuators with large strain and high fatigue resistance.
In: Journal of the American Ceramic Society, Wiley, pp. 6147-6155, 2019, (102), ISSN 00027820,
DOI: 10.1111/jace.16499,
[Article]

Abstract

Large‐strain multilayer actuators (MLAs) were fabricated by tape‐casting 0.91(Na1/2Bi1/2)TiO3–0.06BaTiO3–0.03AgNbO3 (NBT‐BT–3AN) lead‐free incipient piezoceramics co‐fired with Pt inner electrodes. Microstructures, dielectric properties, unipolar and bipolar strain, as well as fatigue properties of the MLAs were investigated. It was found that the actuator consisting of 15 ceramic layers with individual thicknesses of 114 μm could output a large unipolar strain of 0.3% and a dynamic displacementof 5 μm at 6 kV/mm at room temperature. It exhibited excellent cyclingstability and provided a high strain of 0.23% after 107 cycles at 6 kV/mm. Moreover,these MLAs still can deliver a strain of 0.20% at 125°C.

Item Type: Article
Erschienen: 2019
Creators: Zhang, Haibo and Ma, Weigang and Xie, Bing and Zhang, Ling and Dong, Shuxaing and Fan, Pengyuan and Wang, Ke and Koruza, Jurij and Rödel, Jürgen
Title: (Na1/2Bi1/2)TiO3‐based lead‐free co‐fired multilayer actuators with large strain and high fatigue resistance
Language: English
Abstract:

Large‐strain multilayer actuators (MLAs) were fabricated by tape‐casting 0.91(Na1/2Bi1/2)TiO3–0.06BaTiO3–0.03AgNbO3 (NBT‐BT–3AN) lead‐free incipient piezoceramics co‐fired with Pt inner electrodes. Microstructures, dielectric properties, unipolar and bipolar strain, as well as fatigue properties of the MLAs were investigated. It was found that the actuator consisting of 15 ceramic layers with individual thicknesses of 114 μm could output a large unipolar strain of 0.3% and a dynamic displacementof 5 μm at 6 kV/mm at room temperature. It exhibited excellent cyclingstability and provided a high strain of 0.23% after 107 cycles at 6 kV/mm. Moreover,these MLAs still can deliver a strain of 0.20% at 125°C.

Journal or Publication Title: Journal of the American Ceramic Society
Volume: 2019
Number: 102
Publisher: Wiley
Uncontrolled Keywords: cycling stability, large strain, lead‐free piezoceramics, multilayer actuators, temperature stability
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 > Nonmetallic-Inorganic Materials
Date Deposited: 06 Aug 2019 06:24
DOI: 10.1111/jace.16499
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