高压电常数(Ba0.85Ca0.15)(Ti0.9Zr0.1-xSnx)O3陶瓷结构与性能研究

doi:10.3724/SP.J.1077.2014.13213

无机材料学报 ›› 2014, Vol. 29 ›› Issue (1): 33-37.DOI: 10.3724/SP.J.1077.2014.13213 CSTR: 32189.14.SP.J.1077.2014.13213

高压电常数(Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1-xSn_x)O₃陶瓷结构与性能研究

江向平, 李璐, 陈超, 唐洁, 郑凯平, 李小红

(景德镇陶瓷学院材料科学与工程学院, 江西省先进陶瓷材料重点实验室, 景德镇 333001)

收稿日期:2013-04-15 修回日期:2013-06-07 出版日期:2014-01-20 网络出版日期:2013-12-09
基金资助:
国家自然科学基金(51262009, 51062005, 91022027); 江西省自然科学基金(2010GQW0037, 2010GQW0038, 20114BAB216018, 20122BAB202001); 江西省主要学科学术和技术带头人培养对象计划项目(2010DD00800); 江西省高等学校“先进陶瓷材料”科技创新团队; 江西省教育厅项目(GJJ11204, GJJ10226, GJJ12488)

Structure and Properties of (Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1-xSn_x)O₃ Lead-free Ceramics with High Piezoelectric Constant

JIANG Xiang-Ping, LI Lu, CHEN Chao, TANG Jie, ZHENG Kai-Ping, LI Xiao-Hong

(Jiangxi Key Laboratory of Advanced Ceramic Materials, College of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, China)

Received:2013-04-15 Revised:2013-06-07 Published:2014-01-20 Online:2013-12-09
Supported by:
National Natural Science Foundation of China (51262009, 51062005, 91022027); Natural Science Foundation of Jiangxi (2010GQW0037, 2010GQW0038, 20114BAB216018, 20122BAB202001); Foundation of Training Academic and Technical Leaders for Main Majors of Jiangxi (2010DD00800); Colleges and Universities “Advanced Ceramics” Scientific and Technological Innovation Team of Jiangxi; Foundation of Jiangxi Provincial Department of Education (GJJ11204, GJJ10226, GJJ12488)

摘要/Abstract

摘要： 采用传统固相法制备了(Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1-xSn_x)O₃ (CBTZS-x)无铅压电陶瓷, 研究了不同Sn含量(x=0~0.1)对CBTZS-x陶瓷相结构、介电以及压电性能的影响。实验结果表明: 所有样品均为纯钙钛矿结构; 随着Sn含量增加, 室温下样品逐渐由三方和四方相共存结构转变为四方相结构, 且三方-四方相转变温度TR-T和居里温度T_C均逐渐减小, 当x=0.04时, TR-T更接近于室温, 此时表现出优异的压电性能; 样品的剩余极化强度P_r和矫顽场E_c随着x增加均呈现出减小的趋势, 而相对介电常数ε_r则逐渐增大。当x=0.04时, CBTZS-x材料的综合性能最佳: d₃₃=665 pC/N, k_p=55.6%, ε_r=4520, P_r=12.5 μC/cm2, E_c=1.6 kV/cm, 表明该陶瓷材料具有很好的应用前景。

关键词: (Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1-xSn_x)O₃, 压电性能, 介电性能

Abstract: Lead-free piezoelectric ceramics (Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1-xSn_x)O₃(CBTZS-x) were prepared by the traditional solid state reaction. Phase structure, dielectric and piezoelectric properties for CBTZS-x samples with different Sn contents were investigated. It is found that all samples have a pure perovskite phase structure. With Sn content increase, the phase structure of CBTZS-x changes from coexistence of rhombohedral and tetragonal phase to tetragonal structure near room temperature. The phase change temperature of rhombohedral to tetragonal (TR-T) and Curie temperature (T_C) shift towards lower temperature. When x=0.04, the TR-T is more close to room temperature, which shows excellent piezoelectric properties. The remnant polarization Pr and coercive field Ec are reduced, while dielectric constant εr is improved by the modification of Sn. The CBTZS-x ceramic with x=0.04 exhibits the optimal properties: d₃₃=665 pC/N, k_p=55.6%, ε_r=4520, P_r=12.5 μC/cm² and E_c=1.6 kV/cm, which indicates that the CBTZS ceramic has a good application prospect.

Key words: (Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1-xSn_x)O₃, piezoelectric properties, dielectric properties

中图分类号:

TQ174

江向平, 李璐, 陈超, 唐洁, 郑凯平, 李小红. 高压电常数(Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1-xSn_x)O₃陶瓷结构与性能研究[J]. 无机材料学报, 2014, 29(1): 33-37.

JIANG Xiang-Ping, LI Lu, CHEN Chao, TANG Jie, ZHENG Kai-Ping, LI Xiao-Hong. Structure and Properties of (Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1-xSn_x)O₃ Lead-free Ceramics with High Piezoelectric Constant[J]. Journal of Inorganic Materials, 2014, 29(1): 33-37.

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高压电常数(Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1-xSn_x)O₃陶瓷结构与性能研究

Structure and Properties of (Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1-xSn_x)O₃ Lead-free Ceramics with High Piezoelectric Constant

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