(K,Na)NbO_(3)-based lead-free piezoceramics:Phase transition,sintering and property enhancement

作     者：Ke WANG Jing-Feng LI 

作者机构：State Key Laboratory of New Ceramic and Fine ProcessingDepartment of Materials Science and EngineeringTsinghua UniversityBeijing 100084China 

出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)

年 卷 期：2012年第1卷第1期

页      面：24-37页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Tsinghua University Initiative Scientific Research Program and National Nature Science Foundation of China(Grant Nos.50921061 and 51028202) 

主　　题：electrical properties ferroelectric properties piezoelectric properties perovskites niobates lead-free 

摘      要：Most widely used piezoelectric ceramics are based on Pb(Zr,Ti)O3(PZT)composition which has adverse environmental and health effects due to its high lead *** and safety concerns with respect to the utilization,recycling,and disposal of lead-based piezoelectric ceramics have induced a new surge in developing lead-free piezoelectric *** all the lead-free ceramics,(K,Na)NbO3(KNN)has drawn increasing attention because of its well-balanced piezoelectric properties and better environmental *** basis of the author’s work,this review summarizes the progress that has been made in recent years on development of KNN-based piezoelectric ceramics,including crystallographic structure and phase transition analysis,pressurized solid-state sintering as well as liquid-phase-assisted sintering process,and poling treatment for property *** in all,KNN is a promising lead-free system,but more research is still required both from academic and industrial interests.