摘要
通过XRD、SEM等技术对Ba4 [Sm1-x（Nd0.8 Bi0.2）x]28/3 Ti18O54 （BSNBT,x=0.15～0.9）系陶瓷的结构组成、显微形貌、烧结温度及介电性能进行综合表征和研究.当x=0.45时,在1 320℃烧结获得了高介电常数、高品质因数及近似零谐振频率温度系数的最优微波性能：εr=90.22,Q×f=7 192 GHz,τf=-1.39μ℃-1.随着x增大,即Ba（Nd,Bi）2Ti4O12 （BNBT）相增加,陶瓷烧结温度从1 450℃降低到1 300℃,烧结特性也随之改善并得到实际应用.
The composition and microstructure, sintering temperature and dielectric properties of Ba4 [Sm1-x （Nd0.8 Bi0.2 ）28/3Ti18O54 （x= 0.15~0.9） system ceramics were comprehensively characterized and studied by XRD, SEM, etc. When x=0.45, excellent dielectric properties of a high dielectric constant and temperature coefficient of resonant frequency of approximately 0 were obtained for the ceramics sintered at 1 320 ℃ ： εr = 90. 22, Q × f = 7 192 GHz, τf= --1.39 μ℃-1. With the increase of x, that is BNBT phase increase, the sintering temperature decreased from 1 450 ℃ to 1 300 ℃, the sintering characteristics was also improved.
出处
《压电与声光》
CSCD
北大核心
2014年第6期939-941,共3页
Piezoelectrics & Acoustooptics
基金
中央高校基本科研业务费专项基金资助项目(ZYGX2012J035)
