摘要
基于电致伸缩效应的微位移驱动器,具有精度高、灵敏度高和滞后小等优点,易于实现亚微米级的微量位移,在精密定位和加工技术中得到了广泛的应用。电致伸缩效应是指电介质在电场作用下,产生的应变正比于电场强度(或极化强度)的平方的现象,在压电、铁电材料的机-电转换过程中起到了至关重要的作用。随着人们对环境可持续发展的重视,无铅钙钛矿陶瓷的电致伸缩效应得到了研究者们的关注。首先综述了国内外电致伸缩效应的发展进程,并提出了获得低滞后、大电致伸缩应变材料的设计思路,总结了几类无铅电致伸缩陶瓷的最新研究进展,并指出其各自优势及存在的不足。其次,讨论了钙钛矿结构陶瓷的电致伸缩效应与压电效应、电卡效应之间的关系,为增强压电、铁电陶瓷的压电和电卡性能提供了新的契机。最后,根据存在的问题和面临的挑战提出展望,以期推动电致伸缩陶瓷及其器件的发展和实用化进程。
The micro-displacement actuators based on the electrostriction are widely used in precision positioning and machining technology due to the merits of high accuracy, high sensitivity, low hysteresis and easy realization of the micro displacement in a submicron order. The electrostriction refers to a phenomenon that the strain is proportional to the square of electric field(or polarization) in dielectrics, which plays a crucial role in the electromechanical behavior of piezoelectric and ferroelectric materials.With particular emphasis on the sustainable development of environment, the electrostriction in lead-free perovskite ceramics has attracted a lot of attentions. In this review, recent development on the electrostriction was represented, and the design idea of materials with a low strain hysteresis and a large electrostrictive strain was discussed. Several kinds of lead-free electrostrictive ceramics were described, and their advantages and disadvantages were pointed out. Besides, the relationships among the electrostriction,piezoelectric effect and electrocaloric effect were discussed, providing an opportunity for further enhancing the piezoelectric and electrocaloric properties for piezoelectric and ferroelectric ceramics. In addition, the existing problems, challenges, and prospects were put forward to promote the development and practical application of electrostrictive ceramics and relative devices.
作者
黄艳莉
赵纯林
吴家刚
HUANG Yanli;ZHAO Chunlin;WU Jiagang(College of Materials Science and Engineering,Sichuan University,Chengdu 611065,China;College of Materials Science and Engineering,Fuzhou University,Fuzhou 350108,China)
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2022年第3期575-586,共12页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金(51972215)
国家自然科学基金国际合作项目(中英人才-牛顿高级学者基金)(52061130216)。
关键词
无铅钙钛矿陶瓷
电致伸缩效应
电致应变
低滞后
lead-free perovskite ceramics
electrostriction
electro-strain
low hysteresis
