摘要
锆钛酸铅(PZT)陶瓷以及PZT基三元铁电陶瓷是性能优越的压电材料,被广泛应用于传感、驱动以及其他电子设备。从保护环境的角度出发,迫切需要开发出无铅材料来取代含铅的压电陶瓷。(K,Na)NbO3(KNN)陶瓷由于具有高的居里温度和压电性能而成为最重要的无铅压电取代材料之一。结合近期国内外有关无铅压电陶瓷论文、著作等,综述了目前无铅压电陶瓷在掺杂改性,粉体制备,晶粒定向生长和烧结方法等方面的相关进展。
Lead zirconium titanate（PZT） ceramics and PZT-based ternary-component ferroelectrics are high-performance piezoelectric materials,which are widely used in sensors,actuators and other electronic devices.From the viewpoint of environmental protection,it is desired to develop lead-free substitutes.（K,Na）NbO3（KNN） based ceramics,a kind of lead-free piezoelectric materials,is one of the best candidates for PZT due to its high Curie temperature point and excellent piezoelectric properties.This paper summarized the new methods for fabricating KNN-based lead-free piezoelectric ceramics,including doping method,powder synthesis,template grain growth,sintering method,and so on.
基金
高等学校博士学科点专项科研基金资助项目(200802871066)
关键词
无铅压电陶瓷
制备方法
水热法
晶粒生长
lead-free piezoelectric ceramics
preparation method
hydrothermal
grain growth
