Effects of sintering atmosphere on microstructure and electrical properties of BiScO3-PbTiO3 high-temperature piezoceramics

被引：7
|
作者：
Cai, Zeyong [1 ]
Wang, Genshui [1 ]
Yu, Gang [1 ]
Huang, Zhen [1 ]
Cao, Fei [1 ]
Dong, Xianlin [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Devices, Shanghai 200050, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 525卷
关键词：
Piezoelectric ceramics; High temperature applications; Sintering atomosphere; PIEZOELECTRIC PROPERTIES; CERAMICS;
D O I：
10.1016/j.jallcom.2012.02.092
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：
BiScO3-PbTiO3 piezoelectric ceramics were fabricated by the conventional solid state reaction method. The effects of sintering atmosphere on microstructure and electrical properties of BiScO3-PbTiO3 were studied. Different weight changes were found in samples sintered in different atmospheres. X-ray diffraction analysis reveals that all the samples have perovskite structure and a second phase is observed in the samples sintered in sacrificial powders. EDS analysis suggests the second phase could be the compound containing Bi and Pb. Samples sintered in air show lower dielectric constant than those sintered in sacrificial powders, but a higher piezoelectric coefficient. The resisitivity of samples sintered in air is about one order of magnitude higher than that of those sintered in sacrificial powders. These results suggest a promising method to gain BiScO3-PbTiO3 high-temperature piezoceramics with excellent electromechanical properties. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：149 / 153
页数：5
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