Effects of CuO doping on the structure and properties lead-free KNN-LS piezoelectric ceramics

被引:0
作者
Hua Wang
Xia Zhai
Jiwen Xu
Changlai Yuan
Changrong Zhou
机构
[1] Guilin University of Electronic Technology,School of Materials Science and Engineering
来源
Journal of Materials Science: Materials in Electronics | 2013年 / 24卷
关键词
Transient Liquid Phase; Bismuth Titanate; Mechanical Quality Factor; Comprehensive Property; Pure Perovskite Phase;
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学科分类号
摘要
(0.95Na0.5K0.5NbO3-0.05LiSbO3)-x mol% CuO (KNN-LS-xCuO) lead-free piezoelectric ceramics have been fabricated by a conventional solid-state reaction route at a lower sintering temperature and the effects of CuO-dopant on structure and properties of KNN-LS ceramics have been studied. It is found that the addition of CuO significantly improves the sinterability and properties of KNN-LS ceramics. X-ray diffraction data shows that a small amount of CuO does not change the phase structure of KNN-LS and a dense microstructure with smaller and more uniform grains is developed, probably due to liquid-phase sintering. With the increase of CuO content x, the relative density, d33, kp, tanδ and Qm have been improved obviously when x < 0.45 due to the presence of the liquid phase and the refined grains, but excessive CuO would degrade the comprehensive properties of KNN-LS-xCuO ceramics. The best specimen with a high relative density of 98.53 % was fabricated when x = 0.45 at 1,060 °C, relating constants respectively are: d33 = 175pC/N, kp = 0.46, εr = 551.23, tanδ = 1.41 %, Qm = 41.5.
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页码:2469 / 2472
页数:3
相关论文
共 87 条
[1]  
Noheda B(2000)undefined Phys. Rev. B 63 14103-undefined
[2]  
Cox DE(2008)undefined Curr. Appl. Phys. 8 253-undefined
[3]  
Shirane G(2011)undefined J. Electron. Mater. 40 2234-undefined
[4]  
Guo R(2012)undefined J. Mater. Sci.: Mater. Electron. 23 1342-undefined
[5]  
Jones B(2008)undefined Phys. Chem. Solids 69 230-undefined
[6]  
Cross LE(2007)undefined J. Am. Ceram. Soc. 90 4066-undefined
[7]  
Jarupoom P(2012)undefined J. Electron. Mater. 41 546-undefined
[8]  
Pengpat K(2012)undefined J. Mater. Sci.: Mater. Electron. 23 846-undefined
[9]  
Pisitpipathsin N(2010)undefined J. Electron. Mater. 39 347-undefined
[10]  
Eitssayeam S(2012)undefined J. Mater. Sci.: Mater. Electron. 23 501-undefined