Effect of dwell time during sintering on piezoelectric properties of (Ba0.85Ca0.15)(Ti0.90Zr0.10)O3 lead-free ceramics

被引：113

作者：

Wu, Jiagang ^{[1
]}

Xiao, Dingquan ^{[1
]}

Wu, Wenjuan ^{[1
]}

Zhu, Jianguo ^{[1
]}

Wang, John ^{[2
]}

机构：

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

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

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 41期

基金：

美国国家科学基金会;

关键词：

Lead-free piezoelectric ceramic; Piezoelectric properties; Dwell time; BARIUM-TITANATE CERAMICS; FERROELECTRIC PROPERTIES; FREE PIEZOCERAMICS; BATIO3; CERAMICS; TEMPERATURE; CONSTANTS;

D O I：

10.1016/j.jallcom.2011.08.024

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this letter, the effect of dwell time (1-6 h) during sintering on the piezoelectric properties is investigated for the (Ba0.85Ca0.15)(Ti0.90Zr0.10)O-3 ceramics. All ceramics sintered at different dwell time are of a pure phase, and its structure distortion is induced by too long dwell time. Their dielectric constant and remanent polarization increases and the coercive field decreases with increasing dwell time. An enhanced piezoelectric behavior (d(33) similar to 492 pC/N and k(p) similar to 51.5%) is demonstrated for the BCTZ ceramic with an optimum dwell time of 5 h, owing to the structure distortion together with a dense microstructure and a larger grain size. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：L359 / L361

页数：3

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