制备工艺对BNBT陶瓷介电性能的影响  

Effect of Preparing Technology on Dielectric Properties of BNBT Ceramics

作　　者：李世春[1] 吴顺华[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《硅酸盐通报》2010年第6期1247-1252,共6页Bulletin of the Chinese Ceramic Society

摘　　要：BNT(BaO-Nd2O3-TiO2)系统陶瓷是一种介电性能优良的陶瓷材料。在BNT中添加一定量的B i2O3,可以得到介电性能更优的BNBT(BaO-Nd2O3-B i2O3-TiO2)陶瓷。该文分别研究了球磨时间、烧结温度和保温时间对BNBT陶瓷介电性能的影响。结果表明:当球磨时间为10h、烧结温度为1160℃、保温时间为9 h时,BNBT陶瓷的介电性能为:介电常数ε=99.8281,介电损耗tanδ=2.65×10-4,介电常数温度系数αε≤±30 ppm℃/。BNT（BaO-Nd2O3-TiO2）system ceramics is a kind of excellent ceramic material with good dielectric properties.BNBT（BaO-Nd2O3-Bi2O3-TiO2）ceramics which can be acquired by adding Bi2O3 in BNT ceramics is a better material than BNT.In this paper,the effect of milling time,sintering temperature and soaking time on dielectric properties of BNBT ceramics was investigated.The result indicated that when milling time is 10 h,sintering temperature is 1160 ℃ and soaking time is 9 h,the dielectric properties are ε=99.8281,tanδ=2.65×10-4,αε≤±30 ppm/℃.

关 键 词：BNBT陶瓷 介电性能 球磨时间 烧结温度 保温时间 

分 类 号：TQ175.6[化学工程—硅酸盐工业]