摘要
采用传统压电陶瓷工艺制备了(1-x)B i0.5(Na0.8K0.2)0.5TiO3-xNaSbO3无铅压电陶瓷,利用XRD、SEM等测试技术表征了陶瓷的晶相结构和表面形貌,利用一些电学仪器测试了其介电和压电性能.结果表明,该体系陶瓷具有单相钙钛矿结构,适量的NaSbO3掺杂可以提高该陶瓷的致密性.在室温下,当掺杂量为0.5%时,该体系表现出较好的压电性能:压电常数d33和机电耦合系数kp分别达到107pC/N和0.209;当掺杂量为0.7%时,εr和tanδ分别为1 551和0.05.
（1-x）Bi0.5（Na0.8K0.2）0.5TiO3-xNaSbO3 lead-free piezoceramics were prepared by conventional mixed-oxide method.Microcosmic structure and shape were studied by x-ray diffraction and scanning electron microscope.Piezoelectrical and dielectrical properties were measured by digital electron instruments.The main conclusions obtained from above research were as follows： all the samples were single perovskite structure.appropriate amount of NaSbO3 could improve compactness of the ceramics.When NaSbO3 were 0.5%,the piezoelectric properties of ceramic obtained better value,The piezoelectric constant d33 and the electromechanical coupling factor kp of the ceramics attained the maximum values of 107pC/ N and 0.209.When NaSbO3 were 0.7%,εr and tanδ of the ceramics attained the maximum values of 1551 and 0.05.
出处
《西华师范大学学报（自然科学版）》
2011年第2期171-174,共4页
Journal of China West Normal University(Natural Sciences)
基金
四川省教育厅重点项目(2006A05)
西华师范大学博士启动基金(06B059)
关键词
无铅压电陶瓷
微结构
压电性能
介电性能
lead-free piezoelectric ceramics
microstructure
piezoelectric properties
dielectric properties.
