Enhanced piezoelectric properties in potassium-sodium niobate-based ternary ceramics

被引：53

作者：

Lv, Xiang ^{[1
]}

Li, Zhuoyun ^{[1
]}

Wu, Jiagang ^{[1
]}

Xi, Jingwen ^{[1
]}

Gong, Meng ^{[1
]}

Xiao, Dingquan ^{[1
]}

Zhu, Jianguo ^{[1
]}

机构：

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

来源：

MATERIALS & DESIGN | 2016年 / 109卷

基金：

美国国家科学基金会;

关键词：

(K; Na)NbO3; Ternary system; Phase boundary; Electrical properties; LEAD-FREE PIEZOCERAMICS; ELECTRICAL-PROPERTIES; PHASE-TRANSITION; TEMPERATURE; COEXISTENCE; BOUNDARY; ANTIMONY;

D O I：

10.1016/j.matdes.2016.07.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

(1 - x)K0.5Na0.5Nb1 - ySbyO3-zSrZrO(3)-xBi(0.5)Na(0.5)HfO(3) (KNNS-SZ-BNH) lead-free ceramics were developed by the conventional solid-state reaction method. Effects of the additives (Bi0.5Na0.5HfO3, SrZrO3 and Sb5+) on their phase structure, microstructure, and electrical properties were investigated. The rhombohedral-orthorhombic- tetragonal (R-O-T) phase boundary can be established in the ceramics with 0.03 <= x <= 0.05, 0.04 <= y <= 0.06, and 0.01 <= z <= 0.025, and then their piezoelectric properties were improved. The ceramics with x = 0.03, y = 0.04 and z = 0.01 possess the optimum piezoelectric properties (d(33) = 470 +/- 5 pC/N, k(p) = 0.51 +/- 0.02, and T-C = 244 degrees C). We believe that R-O-T multiphase coexistence is mainly responsible for the enhancement of piezoelectric properties. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：609 / 614

页数：6

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