[(NaxK(1–x))0.985Bi0.015](Nb0.97Ti0.03)O3陶瓷的压电与介电性能研究

doi:10.3724/SP.J.1077.2013.12257

无机材料学报 ›› 2013, Vol. 28 ›› Issue (3): 326-330.DOI: 10.3724/SP.J.1077.2013.12257 CSTR: 32189.14.SP.J.1077.2013.12257

[(Na_xK(1–x))_0.985Bi_0.015](Nb_0.97Ti_0.03)O₃陶瓷的压电与介电性能研究

江向平, 易文斌, 陈超, 涂娜, 李小红, 展红全

(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:2012-04-23 修回日期:2012-05-27 出版日期:2013-03-20 网络出版日期:2013-02-20
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)

Piezoelectric and Dielectric Properties of [(Na_xK(1–x))_0.985Bi_0.015](Nb_0.97Ti_0.03)O₃ Ceramics

JIANG Xiang-Ping, YI Wen-Bin, CHEN Chao, TU Na, LI Xiao-Hong, ZHAN Hong-Quan

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

Received:2012-04-23 Revised:2012-05-27 Published:2013-03-20 Online:2013-02-20
Supported by:
National Natural Science Foundation of China (51262009, 51062005, 91022027); Natural Science Foundation of Jiangxi Province (2010GQW0037, 2010GQW0038, 20114BAB216018, 20122BAB202001); Foundation of Training Academic and Technical Leaders for Main Majors of Jiangxi Province (2010DD00800); Colleges and Universities “Advanced Ceramics” Scientific and Technological Innovation Team of Jiangxi Province; Foundation of Jiangxi Provincial Department of Education (GJJ11204, GJJ10226, GJJ12488)

摘要/Abstract

摘要： 采用固相法制备了[(Na_xK(1–x))_0.985Bi_0.015](Nb_0.97Ti_0.03)O₃(x=0.40~0.65)无铅压电陶瓷, 研究了样品的物相结构、显微形貌、压电以及介电性能随x的变化规律。结果表明: 所有样品都具有钙钛矿结构并且居里温度T_C在 340~365℃范围内; 当x=0.40和x=0.65时, 样品为四方相结构; 在0.45≤x≤0.63范围内, 形成了典型的PPT(polymorphic phase transition), 样品表现出较高的压电活性。当x=0.60时, 样品的压电性能最佳(d₃₃=253 pC/N, k_p=0.43, T_C=359℃)。

关键词: 铌酸钾钠, 多晶型转变, 压电性, 介电性

Abstract: [(Na_xK(1–x))_0.985Bi_0.015](Nb_0.97Ti_0.03)O₃ (x=0.40–0.65) lead-free piezoelectric ceramics were synthesized by solid-state reaction method. The influences of different x value on the phase structure, microstructure, piezoelectric and dielectric properties of samples were studied in detail. The results indicate that all samples possess pure perovskite structure and the Curie temperature of all samples are in the temperature range of 340–365℃. The ceramic sample with x=0.40 is in the tetragonal symmetry at room temperature and with the increase of x content, the phase structure of samples change gradually from pure tetragonal phase to coexistence of tetragonal and orthorhombic phase, while the ceramic sample with x=0.65 has tetragonal phase. The polymorphic phase transition (PPT) from orthorhombic to tetragonal symmetry near room temperature locates in the composition of 0.45≤x≤0.63 in which the ceramic samples possess relatively high piezoelectric activity. The ceramic sample (x=0.60) with optimum piezoelectric properties (d₃₃=253 pC/N, k_p=0.43, T_C=359℃) is a promising lead-free piezoelectric material.

Key words: potassium sodium niobate, polymorphic phase transition, piezoelectric properties, dielectric properties

中图分类号:

TQ174

江向平, 易文斌, 陈超, 涂娜, 李小红, 展红全. [(Na_xK(1–x))_0.985Bi_0.015](Nb_0.97Ti_0.03)O₃陶瓷的压电与介电性能研究[J]. 无机材料学报, 2013, 28(3): 326-330.

JIANG Xiang-Ping, YI Wen-Bin, CHEN Chao, TU Na, LI Xiao-Hong, ZHAN Hong-Quan. Piezoelectric and Dielectric Properties of [(Na_xK(1–x))_0.985Bi_0.015](Nb_0.97Ti_0.03)O₃ Ceramics[J]. Journal of Inorganic Materials, 2013, 28(3): 326-330.

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[(Na_xK(1–x))_0.985Bi_0.015](Nb_0.97Ti_0.03)O₃陶瓷的压电与介电性能研究

Piezoelectric and Dielectric Properties of [(Na_xK(1–x))_0.985Bi_0.015](Nb_0.97Ti_0.03)O₃ Ceramics

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