Enhanced electromechanical properties in <001> -textured (Ba0.85Ca0.15) (Zr0.1Ti0.9)O3 lead-free piezoceramics

被引：53
作者：
Bai, Wangfeng [1 ]
Chen, Daqin [1 ]
Li, Peng [2 ]
Shen, Bo [2 ]
Zhai, Jiwei [2 ]
Ji, Zhenguo [1 ]
机构：
[1] Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China
[2] Tongji Univ, Sch Mat Sci & Engn, Funct Mat Res Lab, Shanghai 201804, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2016年 / 42卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Perovskites; Templated grain growth; Lead-free ceramics; Strain response; TEMPLATED GRAIN-GROWTH; ELECTRIC-FIELD; PIEZOELECTRIC PROPERTIES; STRUCTURE EVOLUTION; CERAMICS; TEMPERATURE; BEHAVIOR; FABRICATION; STRAIN; STRESS;
D O I：
10.1016/j.ceramint.2015.10.139
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
<001> -textured (Ba0.85Ca0.15)(Zr0.1Ti0.9)O-3 (BCZT) lead-free piezoelectric ceramics were fabricated by templated grain growth using plate-like BaTiO3 as template. The effects of <001> orientation degree on the microstructure and resulting changes in dielectric, ferroelectric, piezoelectric, and strain properties were systematically investigated to develop the lead-free piezoelectric materials with an excellent actuating performance. The electromechanical properties were found to increase monotonously with the increase in the degree of texturing and dramatically enhanced for the textured BCZT ceramics in the optimized microstructure compared with randomly-oriented counterparts. Highly textured ceramics showed excellent electromechanical properties of d(33)=462 pC/N, k(p)=47%, S=0.187%, and S-max/E-max=621 pm/V at room temperature. These results indicates that the textured ceramics are promising candidates for environmentally friendly actuator devices with high performance. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：3429 / 3436
页数：8
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