Phase structures and electrical properties of new lead-free Na0.5K0.5NbO3-LiSbO3-BiFeO3 ceramics

被引：89
作者：
Jiang, Minhong [1 ]
Liu, Xinyu
Chen, Guohua
机构：
[1] Cent S Univ, Coll Mat Sci & Engn, Changsha 410083, Peoples R China
来源：
SCRIPTA MATERIALIA | 2009年 / 60卷 / 10期
关键词：
Lead-free piezoelectric ceramics; Microstructure; Perovskites; Electrical properties; Sintering; PIEZOELECTRIC PROPERTIES; MICROSTRUCTURE;
D O I：
10.1016/j.scriptamat.2009.02.017
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
(1 - x)(0.95Na(0.5)K(0.5)NbO(3)-0.05LiSbO(3))-xBiFeO(3) solid-solution piezoelectric ceramics have been fabricated by conventional ceramic processing. A morphotropic phase boundary (MPB) between orthorhombic and tetragonal ferroelectric phases was identified around x = 0.004. The ceramics near the MPB exhibit good electrical properties (d(33) = 260 pC/N-1, k(rho) = 51.5%, T-c = 365 degrees C, rho = 4.51 g cm(-3) and tan theta=2.00%). The results indicate that this ceramic is a promising lead-free piezoelectric material. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：909 / 912
页数：4
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