硅酸盐学报2017，Vol.45Issue(5)：717-721,5.DOI:10.14062/j.issn.0454-5648.2017.05.18
Na0.5Bi0.5TiO3:ZnO无铅复相陶瓷的显微结构与铁电性能
Microstructure and Ferroelectric Properties of Na0.5Bi0.5TiO3:ZnO Lead Free Composite Ceramics
摘要
Abstract
Lead-free ferroelectric composite ceramics Na0.5Bi0.5TiO3∶ZnO (BNT:ZnO) were prepared by a two-step solid phase synthesis method.The sintering ability,microstructures and ferroelectric properties of the composites were investigated by X-ray diffraction and scanning electron microscopy.The results show that the incorporation of 20％ (mole fraction) ZnO leads to the formation of the third phase Zn2TiO4,compared to pure BNT phase.The amount of Zn2TiO4 gradually increases with the increase of sintering temperature.According to the hysteresis loops of the composite ceramics at high temperatures,the remanent polarization of the samples sintered at 1 000 ℃ still retains 81％ at room temperature when the test temperature is 135 ℃.The remanent polarization of different samples does not reduce as the temperature increases,thus proving that the built-in electric field formed by ZnO improves the ferroelectric stability of BNT at high temperatures.关键词
无铅压电陶瓷/复相陶瓷/铁电性/氧化锌/退极化Key words
lead-free piezoceramics/composite ceramics/ferroelectric property/zinc oxide/depolarization分类
信息技术与安全科学引用本文复制引用
李玲,朱满康,郑木鹏,侯育冬..Na0.5Bi0.5TiO3:ZnO无铅复相陶瓷的显微结构与铁电性能[J].硅酸盐学报,2017,45(5):717-721,5.基金项目
国家自然科学基金项目(51172006). （51172006）
