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

Dittmer R, Aulbach E, Jo W, Webber KG, Rödel J (2012)

Publication Language: English

Publication Status: Published

Publication Type: Journal article

Publication year: 2012

Journal

Scripta Materialia Elsevier

Publisher: Elsevier

Book Volume: 67

Pages Range: 100-103

DOI: 10.1016/j.scriptamat.2012.03.031

Abstract

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.

Authors with CRIS profile

Kyle Grant Webber Professur für Werkstoffwissenschaften (Funktionskeramik)

Involved external institutions

Technische Universität Darmstadt DE Germany (DE)

How to cite

APA:

Dittmer, R., Aulbach, E., Jo, W., Webber, K.G., & Rödel, J. (2012). Large blocking force in Bi1/2Na1/2TiO3-based lead-free piezoceramics. Scripta Materialia, 67, 100-103. https://doi.org/10.1016/j.scriptamat.2012.03.031

MLA:

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

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