KNN基无铅压电陶瓷组分设计与相界构建研究进展  

Researches on the composition design and phase-boundary building of KNN based lead-free piezoelectric ceramics

作　　者：刘超[1] 李方旭[1] 肖定全[1] 朱建国[1] 

机构地区：[1]四川大学材料科学与工程学院,成都610064

出　　处：《功能材料》2014年第1期1-5,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50772068;50972095;51272164)

摘　　要：碱金属铌酸盐(KNN)系无铅压电陶瓷因其优异的压电介电性能,尤其是以准同型相界(MPB)或多晶型相界(PPB)附近优越的压电性能受到极为深入和广泛的研究。结合近年相关文献报导,综述了KNN基无铅压电陶瓷的组分设计和相界构建与性能调控的最新研究进展;概括总结了相界构建与组分的依赖关系;阐述了组分设计和相界构建在无铅压电陶瓷研究领域中的重要意义;分析并展望了相界构建在无铅压电陶瓷中的研究前景。Potassium sodium niobate （KNN）based lead-free piezoelectric ceramics,which have superior piezoe-lectric and dielectric properties especially for the compositions near their morphotropic phase boundary （MPB） or polymorphic phase boundary （PPB）,have been deeply and widely researched.In this paper,the dependence of the phase-boundary building and composition design for KNN based lead-free piezoelectric ceramics were summarized and the recent progress of the composition design with phase-boundary building and properties’ad-justment are reviewed according to the related reports.The significances of the composition design and phase-boundary building in the field of lead-free piezoelectric ceramics were explained,and the research prospects of the phase-boundary building in lead-free piezoelectric ceramics were also prodicted in this paper.

关 键 词：无铅压电陶瓷 碱金属铌酸盐 组分设计 相界构建 性能调控 

分 类 号：TM221[一般工业技术—材料科学与工程]