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Journal of Materials Science: Materials in Electronics
Published in: Journal of Materials Science: Materials in Electronics 24/2019

14-11-2019

Effect of NaCl on the microstructure and electrical properties of K0.5Na0.5NbO3 ceramics prepared by cold sintering process

Authors: Mengshuang Chi, Weibing Ma, Jingdong Guo, Jinquan Wu, Tingting Li, Shenghui Wang, Pengfei Zhang

Published in: Journal of Materials Science: Materials in Electronics | Issue 24/2019

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Abstract

K0.5Na0.5NbO3 ceramics are considered as a potential candidate for PZT due to its excellent electrical properties and high Curie temperature. In this work, Cold sintering process (CSP) has been used in preparing the K0.5Na0.5NbO3-NaCl ceramics. Based on the experimental characterization, utilizing NaCl aqueous solutions as a transient solvent can change the grain microstructure of KNN ceramics, inhibit the volatilization of alkali metal elements, and lower the sintering temperature. As sintering at 900 °C, the electrical properties of the ceramic were Tc= 448 °C, d33= 115 pC/N, kp= 32%, and the obtained sample had an average grain size of 0.5 μm. The results indicate that CSP with NaCl aqueous solutions is an efficient method for low-temperature sintering of KNN ceramics with uniform grain size as well as good performance in electrical properties.
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Metadata
Title
Effect of NaCl on the microstructure and electrical properties of K0.5Na0.5NbO3 ceramics prepared by cold sintering process
Authors
Mengshuang Chi
Weibing Ma
Jingdong Guo
Jinquan Wu
Tingting Li
Shenghui Wang
Pengfei Zhang
Publication date
14-11-2019
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 24/2019
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-019-02523-2

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