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      Multi-phase structure and electrical properties of Bi 0.5Li 0.5ZrO 3 doping K 0.48Na 0.56NbO 3 lead-free piezoelectric ceramics

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          Abstract

          (1 –x)K 0.48Na 0.56NbO 3xBi 0.5Li 0.5ZrO 3 (KNN– xBLZ, x = 0–0.06) lead-free piezoelectric ceramics were prepared by the conventional solid-state sintering method, and their phase structures and electric properties as well as T C were systematically investigated. The orthorhombic–tetragonal (O–T) two phases were detected in all (1 –x)K 0.48Na 0.56NbO 3xBi 0.5Li 0.5ZrO 3 ceramics at 0.01 ≤ x ≤ 0.05. Due to the appropriate ratio between O phase and T phase ( C O / C T = 45/55), high piezoelectric properties of d 33 = 239 pC/N, k p = 34%, and P r = 25.23 μC/cm 2 were obtained at x = 0.04. Moreover, a high T C = 348 ℃ was also achieved in KNN– xBLZ ceramic at x = 0.04. These results indicate that (1 –x)K 0.48Na 0.56NbO 3xBi 0.5Li 0.5ZrO 3 system is a promising candidate for high-temperature piezoelectric devices.

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          Author and article information

          Journal
          Journal of Advanced Ceramics
          Journal of Advanced Ceramics
          Tsinghua University Press (Tsinghua University, Beijing 100084, China )
          2226-4108
          05 March 2018
          : 07
          : 01
          : 79-87
          Affiliations
          [ a ] School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
          [ b ] New Metallurgy Hi-Tech Group Co., Ltd., China Iron & Steel Research Institute Group, Beijing 100081, China
          [ c ] Hebei Key Lab of Optic-Electronic Information and Materials, College of Physics Science & Technology, Hebei University, Baoding 071002, China
          Author notes
          * Corresponding author. E-mail: bpzhang@ 123456ustb.edu.cn
          Article
          2226-4108-07-01-79
          10.1007/s40145-018-0259-3

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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