Low-Temperature Sintering of CuO-Doped 0.94(K0.48Na0.535)NbO3-0.06LiNbO3 Lead-Free Piezoelectric Ceramics

被引：35
作者：
Huang, Rongxia [1 ]
Zhao, Yuzhen [1 ]
Zhang, Xiaowen [1 ]
Zhao, Yongjie [1 ]
Liu, Rongzheng [1 ]
Zhou, Heping [1 ]
机构：
[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2010年 / 93卷 / 12期
基金：
中国国家自然科学基金;
关键词：
ELECTRICAL-PROPERTIES; GRAIN-GROWTH;
D O I：
10.1111/j.1551-2916.2010.04227.x
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Lead-free 0.94(K0.48Na0.535)NbO3-0.06LiNbO(3)-xmol%CuO ceramics were synthesized by conventional ceramics processes. The doping of CuO can decrease the sintering temperature to 890 degrees C and effectively promote the densification of 0.94(K0.48Na0.535)NbO3-0.06LiNbO(3) ceramics. X-ray diffraction result reveals that doping of CuO induces lattice distortion. Homogeneous grain growth is observed, due to the presence of liquid phase that resulted from the addition of CuO. The ceramics sintered at 890 degrees C show fairly good properties with the planar electromechanical coupling factor k(p)=34.8%, piezoelectric constant d(33)=157.5 pC/N, dielectric constant epsilon T-33/epsilon(0)=391, and mechanical quality factor Q(m)=173.5.
引用
收藏
页码：4018 / 4021
页数：4
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