Effect of Bi0.5(Na0.9K0.1)0.5TiO3 on Phase Structure and Electrical Properties of (K0.5Na0.5)NbO3 Lead-free Ceramics

被引：1
|
作者：
Huang, Tao [1 ]
Xiao, Ding-Quan [1 ]
Liang, Wen-Feng [1 ]
Wu, Jia-Gang [1 ]
Zhu, Jian-Guo [1 ]
机构：
[1] Sichuan Univ, Sch Mat Sci & Engn, Chengdu 610064, Peoples R China
来源：
FERROELECTRICS | 2014年 / 458卷 / 01期
关键词：
Lead-free piezoelectric ceramics; phase transition; piezoelectric properties; ferroelectric properties; (1-x)KNN-xBNKT; PIEZOELECTRIC PROPERTIES;
D O I：
10.1080/00150193.2013.850948
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
(1-x)(K0.5Na0.5)NbO3-xBi(0.5)(Na0.9K0.1)(0.5)TiO3 ((1-x)KNN-xBNKT) lead-free ceramics were prepared by the conventional solid state reaction technique, and the effects of BNKT on the phase structure, microstructure, ferroelectric and piezoelectric properties of (1-x)KNN-xBNKT ceramics were investigated. The addition of BNKT strongly affects the microstructure of these ceramics, and changes the crystalline structure of these ceramics from an orthorhombic phase with x < 0.02 to a tetragonal phase with x 0.03 at room temperature. A coexistence of orthorhombic and tetragonal phases was identified in the range of 0.02 x < 0.03. 0.975KNN-0.025BNKT ceramics show the optimum piezoelectric properties of d(33)approximate to 170 pC/N and k(p)approximate to 0.38.
引用
收藏
页码：194 / 199
页数：6
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