Reactive sintering and piezoelectric properties of 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 ceramics with ZnO additive

被引：7

作者：

Kawashima, Tasuku ^{[1
]}

Suzuki, Yoshikazu ^{[1
,2
]}

机构：

[1] Univ Tsukuba, Grad Sch Pure & Appl Sci, 1-1-1 Tennodai, Ibaraki 3058573, Japan

[2] Univ Tsukuba, Fac Pure & Appl Sci, 1-1-1 Tennodai, Ibaraki 3058573, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2016年 / 124卷 / 09期

关键词：

Bismuth sodium titanate; Barium titanate; Morphotropic phase boundary; Reactive sintering; Piezoelectric property; ELECTRICAL-PROPERTIES; BATIO3;

D O I：

10.2109/jcersj2.16051

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：

Bismuth sodium titanate (Bi0.5Na0.5TiO3, BNT) and its solid-solution with BaTiO3 (BNT-BT) are promising lead-free piezoelectric ceramics. Around the morphotropic phase boundary (MPB), the 0.94BNT-0.06BT composition shows high piezoelectric performance. In this paper, we have investigated the effect of ZnO-doping on the reactive sintering and piezoelectric properties of 0.94BNT-0.06BT ceramics. Bi2O3, anhydrous Na2CO3, TiO2 (anatase), BaCO3 and ZnO powders were wet ball-milled in ethanol, cold isostatically pressed at 200MPa for 10 min, and reactively sintered at 1150 degrees C for 2 h in air. The relative density drastically increased from 83.3% (without ZnO) to 93.7% (with 0.5 mol% ZnO). The sample with 0.5 mol% ZnO showed the highest piezoelectric constant d(33) of 124pC/N. Even by the one-step reactive sintering, the d(33) value was comparable with that of the two-step conventional sintering. (C) 2016 The Ceramic Society of Japan. All rights reserved.

引用

页码：911 / 914

页数：4

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