Preparation and properties of (Bi1/2Na1/2)TiO3-Ba(Ti,Zr)O3 lead-free diezoelectric ceramics

被引：139
|
作者：
Peng, C [1 ]
Li, JF [1 ]
Gong, W [1 ]
机构：
[1] Tsing Hua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
来源：
MATERIALS LETTERS | 2005年 / 59卷 / 12期
基金：
中国国家自然科学基金;
关键词：
sintering; piezoelectric materials; (Bi1/2Na1/2)TiO3-Ba(Ti; Zr)O-3; lead-free;
D O I：
10.1016/j.matlet.2005.01.026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Lead-free piezoelectric ceramics based on bismuth sodium titanate (Bi1/2Na1/2)TiO3 (BNT)-barium zirconate titanate Ba(Ti,Zr)O-3 (BZT) were prepared by using a modified sintering process. The BNT-BZT ceramics sintered at 1180 degrees C for 3 h in air showed perovskite structure with high densities around 5.32-5.82 g/cm(3) (similar to 97% as relative density). Focusing on the morphotropic phase boundary (MPB) of BNT-BZT system, the ferroelectric, dielectric and piezoelectric properties of the BNT-BZT ceramics were studied. In the case of (Bi1/2Na1/2)TiO3-xBa(Ti0.942Zr0.058)O-3 solid solution ceramics, the maximum of piezoelectric constant d(33) (147 pC/N) was obtained for the ceramic with 9% BZT, which has a tetragonal phase near the MPB region. The BNT-BZT system was expected to be a new and promising candidate for lead-free piezoelectric ceramics. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：1576 / 1580
页数：5
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