Microstructure and Electrical Properties of 0.95(K0.5Na0.5)NbO3-0.05Li(Nb0.5Sb0.5)O3 Ceramics

被引：0

作者：

Zhao Yongjie ^{[1
]}

Zhao Yuzhen ^{[1
]}

Huang Rongxia ^{[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：

RARE METAL MATERIALS AND ENGINEERING | 2011年 / 40卷

关键词：

lead-free ceramics; crystal structure; piezoelectric properties; dielectric properties; LEAD-FREE PIEZOCERAMICS;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lead-free piezoelectric ceramics 0.95(K0.5Na0.5)NbO3-0.05Li(Nb0.5S0.5)O-3 (KNN-5LNS) were synthesized by the conventional ceramic sintering technique. The phase structure, microstructure and electrical properties of KNN-5LNS ceramics were investigated. The results of XRD indicate that KNN-5LNS possess a pure tetragonal structure. With the sintering temperature increasing, the average size of grains first increases and then decreases. Maximum value 3.5 mu m was obtained for samples sintered at 1020 degrees C. The KNN-5LNS sintered at 1020 degrees C obtains the optimum electrical properties: d(33)=245 pC/N, K-p=0.42, tan delta=0.03, epsilon(T)(33)/epsilon(0)=640, E-c=2.1 kV/mm, and P-r=20 mu C/cm(2)

引用

页码：405 / 407

页数：3

共 5 条

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