Microstructure and electrical properties of NaNbO3-BaTiO 3 lead-free piezoelectric ceramics

被引：7
作者：
Xie S. [1 ]
Zhu K. [1 ]
Qiu J. [1 ]
Guo H. [1 ]
机构：
[1] Aeronautic Key Laboratory for Smart Materials and Structures, Nanjing University of Aeronautics and Astronautics
来源：
Frontiers of Mechanical Engineering in China | 2009年 / 4卷 / 3期
关键词：
Ceramics; Crystal structure; Lead-free piezoelectric ceramics; Microstructure; NaNbO[!sub]3[!/sub]-BaTiO[!sub]3[!/sub; Piezoelectricity;
D O I：
10.1007/s11465-009-0050-9
中图分类号：
学科分类号：
摘要：
Lead-free piezoelectric ceramics (1 - x) NaNbO3-xBaTiO3 have been fabricated by a traditional ceramic sintering technique. The effects of BaTiO3 (BT) synthesized by hydrothermal method on crystal structure, density, dielectric, piezoelectric, and electromechanical properties were investigated. Results show that the phase structure transforms from the orthorhombic phase to the tetragonal phase with the increase of the content of BT, and the two phases co-exist when 0.08 < x ≤ 0.10. However, the optimum composition for (1 - x)NaNbO3-xBaTiO3 ceramics is 0.90NaNbO3-0.10BaTiO3. The 0.90NaNbO3-0. 10BaTiO3 ceramics sintered at 1250°C have higher properties: piezoelectric constant d 33 of 120 pC/N, dielectric constant ετ of 718, planar electromechanical coupling actor k p of 24%, planar frequency N d of 3 MHz•mm, and the mechanical quality factor Q m of 138, respectively. The results show that the (1-x)NaNbO3-xBaTiO3 ceramics is one of the promising lead-free materials for high-frequency applications. © 2009 Higher Education Press and Springer-Verlag GmbH.
引用
收藏
页码：345 / 349
页数：4
相关论文
共 20 条
[1]  
Matsubara M., Yamaguchi T., Sakamoto W., Kikuta K., Yogo T., Hirano S.-I., Processing and piezoelectric properties of lead-free (K,Na) (Nb,Ta) O <sub>3</sub> ceramics, Journal of the American Ceramic Society, 88, 5, pp. 1190-1196, (2005)
[2]  
Zhang S., Xia R., Shrout T.R., Zang G., Wang J., Characterization of lead free (K<sub>0.5</sub>Na<sub>0.5</sub>)NbO <sub>3</sub>-LiSbO<sub>3</sub> piezoceramic, Solid State Communications, 141, 12, pp. 675-679, (2007)
[3]  
Zhang S.J., Xia R., Lead-free piezoelectric ceramics vs. PZT, J. Electroceram, (2007)
[4]  
Ahn C.W., Song H.C., Effect of MnO<sub>2</sub> on the piezoelectric properties of (1 - X)(Na<sub>0.5</sub>K<sub>0.5</sub>)NbO<sub>3</sub>-xBaTiO<sub>3</sub> ceramics, Japanese Journal of Applied Physics, 44, pp. 1361-1364, (2005)
[5]  
Zhi Y., Chen A., Piezoelectric and strain properties of Ba(Ti<sub>1 - X</sub> Zr <sub>x</sub>) O<sub>3</sub> ceramics, Journal of Applied Physics, 92, 3, pp. 1489-1493, (2002)
[6]  
Lin D., Kowk K.W., Structure and electrical properties of (Na<sub>0.5</sub>K<sub>0.5</sub>) NbO<sub>3</sub>-LiSbO<sub>3</sub> lead-free piezoelectric ceramics, Journal of Applied Physics, 101, pp. 0741111-0741116, (2007)
[7]  
Chang R.C., Chu S.Y., The effect of sintering temperature on the properties of (Na <sub>0.5</sub>K<sub>0.5</sub>)NbO<sub>3</sub>-CaTiO<sub>3</sub> based lead-free piezoelectric ceramics, Sensors and Actuators A, 138, pp. 355-360, (2007)
[8]  
Du H.L., Tang F.S., Influence of sintering temperature on piezoelectric Properties of (Na<sub>0.5</sub>K<sub>0.5</sub>)NbO<sub>3</sub>-LiNbO<sub>3</sub> lead-free piezoelectric ceramics, Materials Research Bulletin, 42, pp. 1594-1601, (2007)
[9]  
Hagh N.M., Jadidian B., Safari A., Property-processing relationship in lead-free (K, Na, Li) NbO <sub>3</sub>-solid solution system, Journal of Electroceramics, 18, 3-4, pp. 339-346, (2007)
[10]  
Saito Y., Takao H., Tani T., Nonoyama T., Takatori K., Homma T., Nagaya T., Nakamura M., Lead-free piezoceramics, Nature, 432, 7013, pp. 84-87, (2004)
12