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

Haibo Zhang*, Weigang Ma, Bing Xie, Ling Zhang, Shuxiang Dong, Pengyuan Fan, Ke Wang, Jurij Koruza, Jürgen Rödel

*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung

Abstract

Large-strain multilayer actuators (MLAs) were fabricated by tape-casting 0.91(Na1/2 Bi1/2)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 displacement of 5 μm at 6 kV/mm at room temperature. It exhibited excellent cycling stability 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.

Originalspracheenglisch
Seiten (von - bis)6147-6155
Seitenumfang9
FachzeitschriftJournal of the American Ceramic Society
Jahrgang102
Ausgabenummer10
DOIs
PublikationsstatusVeröffentlicht - 2019

ASJC Scopus subject areas

  • Keramische und Verbundwerkstoffe
  • Werkstoffchemie

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