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

页码：1576 / 1580

页数：5

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