Paper Title:
Preparation and Characterization of Lead-Free Piezoelectric Ceramics
  Abstract

(K,Na)NbO3-based piezoelectric ceramics are promising candidates for practical applications of lead-free piezoelectric materials due to their excellent piezoelectric properties. In this paper, lead-free piezoelectric ceramics (K0.44Na0.52Li0.04)(Nb0.86Ta0.10Sb0.04)O3 (KNL-NTS) were successfully fabricated by traditional ceramics processing. The effects of sintering temperature on the structure, density and electrical properties of KNL-NTS ceramics were investigated. Crystal phases of both calcined powders and KNL-NTS ceramics have orthorhombic structure similar to that of KNbO3 ceramics. The piezoelectric coefficient first increases and then decreases with sintering temperature in the 1100-1180 °C range. KNL-NTS ceramics sintered at 1160 °C shows the maximum piezoelectric coefficient of about 199 pC·N-1 and the maximum remnant polarization of 18.75 μC·cm-2, with the corresponding 10.95 kV·cm-1 coercive field and 4.74 g/cm3 density.

  Info
Periodical
Edited by
Yiwang Bao, Danyu Jiang, Li Tian and Jianghong Gong
Pages
189-193
DOI
10.4028/www.scientific.net/KEM.492.189
Citation
Q. Chen, J. X. Li, L. H. Zhang, Y. Bai, Y. J. Su, L. J. Qiao, A. A. Volinsky, "Preparation and Characterization of Lead-Free Piezoelectric Ceramics", Key Engineering Materials, Vol. 492, pp. 189-193, 2012
Online since
September 2011
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$32.00
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