Large blocking force in Bi1/2Na1/2TiO3-based lead-free piezoceramics

Journal article

Publication Details

Author(s): Dittmer R, Aulbach E, Jo W, Webber K, Rödel J
Journal: Scripta Materialia
Publisher: Elsevier
Publication year: 2012
Volume: 67
Pages range: 100-103
ISSN: 1359-6462
Language: English


Blocking stress (sigma(b)) and free strain (S-f) are the most important parameters for piezoelectric actuators, both having a decisive impact on the electromechanical performance. Here, we report on the blocking stress of lead-free piezoceramics, using 0.94Bi(1/2) Na1/2TiO3-0.06BaTiO(3) (6BT) and 0.98(0.94Bi(1/2)Na(1/2)TiO(3)-0.06BaTiO(3))-0.02K(0.5)Na(0.5)NbO3 (2KNN) as prototypical compositions. While 6BT delivers high sigma(b) = 102 MPa at 125 degrees C, the addition of 2 mol.% K0.5Na0.5NbO3 results in a large sigma(b) = 124 MPa at room temperature. Therefore, both lead-free materials outperform lead zirconate titanate at their respective peak temperatures. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

FAU Authors / FAU Editors

Webber, Kyle Prof.
Professur für Werkstoffwissenschaften (Funktionskeramik)

How to cite

Dittmer, R., Aulbach, E., Jo, W., Webber, K., & Rödel, J. (2012). Large blocking force in Bi1/2Na1/2TiO3-based lead-free piezoceramics. Scripta Materialia, 67, 100-103.

Dittmer, Robert, et al. "Large blocking force in Bi1/2Na1/2TiO3-based lead-free piezoceramics." Scripta Materialia 67 (2012): 100-103.


Last updated on 2018-19-04 at 03:06