高温压电陶瓷研究进展

PROGRESS IN RESEARCH ON HIGH TEMPERATURE PIEZOELECTRIC CERAMICS

评述了碱金属铌酸盐、钨青铜结构、铋层状结构和钙钛矿结构等高温压电陶瓷体系的结构和性能,重点介绍了复合钙钛矿固溶体系Bi(Me)O3–PbTiO3的研究进展。总结了影响压电陶瓷Curie温度的影响因素。提出了高温压电陶瓷今后的研究方向一方面根据容差因子和Curie温度的关系开发新的高温压电体系;另一方面通过掺杂改性和工艺优化增加钙钛矿结构的稳定性并提高其性能。

The structure and properties of LiNbO3, tungsten-bronze family, bismuth layer-structured and perovskite-structured piezoelectric ceramics are reviewed. The recent progress on the newly reported perovskite solid solution system Bi（Me）O3-PbTiO3 is introduced. The factors influencing the Curie temperature of piezoelectric ceramics are summarized as well. Based on the relationship of the tolerance factor and the Curie temperature, new high-temperature piezoelectric solid solution systems are expected to be discovered in future work. Moreover by doping and optimizing the preparation process, the stability of the perovskite structure and the properties oftbe materials may be increased as the development of these materials continues.