Sintering temperature-induced electrical properties of (Ba0.90Ca0.10)(Ti0.85Zr0.15)O3 lead-free ceramics

被引：80

作者：

Wu, Jiagang ^{[1
]}

Xiao, Dingquan ^{[1
]}

Wu, Bo ^{[1
]}

Wu, Wenjuan ^{[1
]}

Zhu, Jianguo ^{[1
]}

Yang, Zhengchun ^{[2
]}

Wang, John ^{[2
]}

机构：

[1] Sichuan Univ, Dept Mat Sci, Chengdu 610064, Peoples R China

[2] Natl Univ Singapore, Dept Mat Sci, Singapore 117574, Singapore

来源：

MATERIALS RESEARCH BULLETIN | 2012年 / 47卷 / 05期

基金：

美国国家科学基金会;

关键词：

Ceramics; Electron microscopy; X-ray diffraction; Microstructure; Piezoelectricity; PIEZOELECTRIC PROPERTIES; FREE PIEZOCERAMICS;

D O I：

10.1016/j.materresbull.2012.01.032

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effects of the sintering temperature on the microstructure and electrical properties of (Ba0.90Ca0.10)(Ti0.85Zr0.15)O-3 (BCTZ) lead-free piezoelectric ceramics have been studied, where these ceramics were prepared by the conventional oxide-mixed method at varied sintering temperatures from 1300 degrees C to 1500 degrees C. These BCTZ ceramics exhibits a phase transition from a rhombohedral phase to the coexistence of rhombohedral and tetragonal phases with an increase of sintering temperature. With an increase of sintering temperature, their relative density and average grain size gradually increase, and electrical properties are improved greatly. These BCTZ ceramics sintered at similar to 1440 degrees C have optimum electrical properties: d(33) similar to 442 pC/N and k(p) similar to 48.9%, making it a promising material for lead-free piezoelectric ceramics. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1281 / 1284

页数：4

共 18 条

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