Ce掺杂对0.9Na0.5Bi2.5Nb2O9-0.1LiNbO3高温无铅压电陶瓷性能的影响

人工晶体学报, 2012, 41(5): 1254-1259.

Ce掺杂对0.9Na0.5Bi2.5Nb2O9-0.1LiNbO3高温无铅压电陶瓷性能的影响

王新佳 ^1, , 江向平 ^2, , 陈超 ^3, , 涂娜 ^4, , 李小红 ^5,

1.景德镇陶瓷学院材料工程系,江西省先进陶瓷重点实验室,景德镇333001

2.景德镇陶瓷学院材料工程系,江西省先进陶瓷重点实验室,景德镇333001

3.景德镇陶瓷学院材料工程系,江西省先进陶瓷重点实验室,景德镇333001

4.景德镇陶瓷学院材料工程系,江西省先进陶瓷重点实验室,景德镇333001

5.景德镇陶瓷学院材料工程系,江西省先进陶瓷重点实验室,景德镇333001

基金项目: 江西省教育厅项目(GJJ11204,GJJ11196,GJJ11197,GJJ10226) 江西省主要学科学术和技术带头人培养对象计划项目(2010DD00800) 江西省自然科学基金(2010GQW0037,2010GQW0038,20114BAB216018) 江西省高等学校"先进陶瓷材料"科技创新团队国家自然科学基金(51062005,91022027)

关键词：铋层状 , 压电陶瓷 , 微观结构 , Na0.5Bi2.5Nb2O9

Effects of Ce-Doping on Properties of 0.9Na0.5Bi2.5Nb2O9-0.1LiNbO3-based High Temperature Lead-Free Piezoelectric Ceramics

本文采用固相法制备了Ce掺杂的0.9Na0.5Bi2.5Nb2O9-0.1LiNbO3(NBN-LN+ xwt％ CeO2)层状高温无铅压电陶瓷；系统地研究了CeO2掺杂对NBN-LN陶瓷的物相、显微结构及电性能的影响；获得的样品均为居里点高于780℃的单一铋层状结构相陶瓷；当CeO2掺杂量x=0.75时,样品具有最佳电性能:d33=28 pC/N,kp=12.11％,tan δ=0.10％,Pr=9.50 μC/cm2;且该组分陶瓷样品在700℃经退极化处理后,其d33仍保持在22 pC/N以上,表明该材料在高温领域下具有良好的应用前景.

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