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中文摘要：
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%,tanδ=0.10%,Pr=9.50μC/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。
英文摘要：
In this work,bismuth layer-structured high temperature lead-free piezoelectric ceramics of Ce-doped 0.9Na0.5Bi2.5Nb2O9-0.1 LiNbO3（NBN-LN＋xwt%CeO2） were synthesized by traditional solid state reaction.The effects of CeO2 addition on the phase,the microstructure and electrical properties of ceramics have been investigated in detail;The results showed that all the ceramic samples were single-phase ferroelectrics with high Curie points（Tc≥780 ℃）;When x=0.75,the ceramic exhibited the optimum electrical properties： d33 =28 pC/N,kp=12.11%,tan δ=0.10%,Pr=9.50 μC/cm2;And after annealing at 700 ℃,this component ceramic sample＇s d33 remained at over 22 pC/N,which indicated that the ceramic was a promising material for high temperature applications.
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