期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 774, 期 -, 页码 471-476出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.10.054
关键词
Thermal gradient sintering method; Piezoelectricity; Bi12TiO20; Composite ceramic
资金
- National Nature Science Foundation of China [51172129]
- Natural Science Foundation of Shandong Province [ZR2017MEM008]
- Fundamental Research Funds of Shandong University
- Science Foundation of National Demonstration Center for Experimental Physics Education (Shandong University)
Bi12TiO20-Na0.5Bi0.5TiO3 (BT-NBT) polar composite ceramics with BT/NBT molar ratios of 1:20, 1:12, 1:5, 1:3 and 1:1 were prepared using a thermal gradient sintering method. The dielectric and piezoelectric properties of samples were investigated as a function of the Bi12TiO20 volume fraction. With increasing the Bi12TiO20 content, the relative dielectric constant (epsilon(r)) decreased and the piezoelectric coefficient (d(33)) increased. The variation of the epsilon(r) values was found to fit closely to theoretical values obtained with the cube model. The strongest piezoelectricity was obtained for the sample with a BT/NBT molar ratio of 1:1, which exhibited a d(33) of 21.5 pC/N and a piezoelectric voltage constant (g(33)) of 40 x 10(-3) Vm/N. BT-xNBT polar composite ceramics exhibited high depoling temperatures and near-zero temperature coefficients of resonant frequency; therefore, they are promising candidates for high-temperature piezoelectric applications. (C) 2018 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据