摘要
钙钛矿层状压电陶瓷具有超高居里温度和高温度稳定性,已成为目前高温压电陶瓷的研究热点。本文针对钙钛矿层状压电陶瓷致密化烧结难以及压电性能低的难题,主要从晶体结构、制备工艺、掺杂改性和复合固溶体等方面总结了钙钛矿层状高温压电陶瓷的研究进展,同时归纳和比较了不同制备工艺和掺杂改性的钙钛矿层状高温压电陶瓷的烧结性和压电性能。简要分析了钙钛矿层状结构自发极化的来源,并对未来研究这类材料的铁电相变机理和提高压电性能作了展望。
Perovskite-layer structured（PLS） piezoelectric ceramics have the characteristics of ultra high Curie temperature and good thermal stability,thus PLS ceramics have become one of the hot topics in the field of high temperature piezoelectric ceramics.The present article reviews the research progress on PLS piezoelectric ceramics from the aspects of crystal structure,processing technologies,doping modifications,and forming solid solutions in order to overcome their disadvantages of poor sinterability and low piezoelectricity.Meanwhile,this review summarizes and compares the effects of processing technologies and doping modifications on the sinterability and piezoelectricity of PLS ceramics.Furthermore,the origin of the spontaneous polarization of PLS ferroelectircs is briefly described.The mechanism of ferroelectric phase transition and the approaches to improvement of piezoelectric properties for PLS piezoelectric ceramics are proposed for research work in the near future.
作者
周志勇
陈涛
董显林
ZHOU Zhi-Yong, CHEN Tao, DONG Xian-Lin(Key Laboratory of Inorganic Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, Chin)
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2018年第3期251-258,共8页
Journal of Inorganic Materials
基金
中国科学院科技服务网络计划区域重点项目~~
关键词
超高温压电陶瓷
钙钛矿层状结构
铁电体
综述
ultra high temperature piezoceramics
perovskite-layer structure
ferroelectrics
review
