Microstructure and Electrical Properties of [(K0.50Na0.50)0.95−xLi0.05Agx](Nb0.95Ta0.05)O3 Lead-Free Ceramics |
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| Authors: | Yuanyu Wang Jiagang Wu Dingquan Xiao Wenjuan Wu Bing Zhang Lang Wu Jianguo Zhu |
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| Affiliation: | Department of Materials Science, Sichuan University, Chengdu 610064, China andCollege of Materials Science and Metallurgy Engineering, Guizhou University, Guizhou 550003, China;
Department of Materials Science, Sichuan University, Chengdu 610064, China |
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| Abstract: | [(K0.50Na0.50)0.95− x Li0.05Ag x ](Nb0.95Ta0.05)O3 (KNLNANT- x ) lead-free piezoelectric ceramics were prepared by normal sintering. Effects of the Ag content on the microstructure and electrical properties of KNLNANT- x ceramics were systematically investigated. It is found that the ceramics with x =0.03 exhibit relatively good electrical properties along with high Curie temperature: ( d 33∼252 pC/N, T c∼438°C, k p∼45.4%, P r∼30.1 μC/cm2, E c∼13.8 kV/cm, ɛr∼1030, and tan δ∼2.6%). The related mechanism for enhanced electrical properties of the ceramics was also discussed. These results show that KNLNANT-0.03 ceramic is a promising candidate material for high temperature lead-free piezoelectric ceramics. |
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