Preparation and piezoelectric properties of CuO-added (Ag0.75Li0.1Na0.1K0.05)NbO3 lead-free ceramics
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  • 作者:Lang Wu ; Haixia Ning
  • 关键词:Ag0.75Li0.1Na0.1K0.05)NbO3 ; lead ; free ceramics ; piezoelectric properties ; CuO
  • 刊名:Journal of Wuhan University of Technology--Materials Science Edition
  • 出版年:2015
  • 出版时间:August 2015
  • 年:2015
  • 卷:30
  • 期:4
  • 页码:724-728
  • 全文大小:942 KB
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  • 作者单位:Lang Wu (1)
    Haixia Ning (2)

    1. State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang, 621000, China
    2. Department of Materials Engineering, Mianyang Vocational and Technical College, Mianyang, 621000, China
  • 刊物类别:Chemistry and Materials Science
  • 刊物主题:Chemistry
    Materials Science
    Chinese Library of Science
  • 出版者:Wuhan University, co-published with Springer
  • ISSN:1993-0437
文摘
CuO-doped (Ag0.75Li0.1Na0.1K0.05)NbO3 (ALNKN-xCuO, x = 0-mol%) lead-free piezoelectric ceramics were prepared by the solid-state reaction method in air atmosphere. The effects of CuO addition on the phase structure, microstructure, and piezoelectric properties of the ceramics were investigated. The experimental results show that the ALNKN ceramics without doping CuO possess rhombohedral phase along with K2Nb6O16-type phase and metallic silver phase. For all of the CuO-doped ALNKN ceramics, a pure perovskite structure with the orthorhombic phase was obtained by enclosing the samples in a corundum tube. A homogeneous microstructure with the grain size of about 1 μm was formed for the ceramics with 0.5mol% CuO. The grain size increases with increasing amount of CuO. The temperature dependence of dielectric properties indicates that the ferroelectric phase of the ALNKN-xCuO ceramics becomes less stable with the addition of CuO. The ceramics with x = 1mol% exhibit relatively good electrical properties along with a high Curie temperature. These results will provide a helpful guidance to preparing other AN-based ceramics by solid-state reaction method in air atmosphere.
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