硼铅锌系玻璃对细晶BaTiO_3基陶瓷系统介电性能影响的研究  

STUDY OF EFFECT OF GLASS ON FINE-GRAIN BaTiO_3 CERAMICS

作　　者：肖谧[1] 李玲霞[1] 崔靖杰[1] 吴霞宛[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《硅酸盐学报》2001年第1期54-58,共5页Journal of The Chinese Ceramic Society

摘　　要：研究了硼铅锌系玻璃对细晶BaTiO3基陶瓷系统介电性能的影响 .玻璃含量的增加可降低系统的烧结温度 ,同时也使系统的介电性能恶化 .玻璃中的Pb2 + 离子可在烧结过程中进入BaTiO3晶格 ,改善瓷料的性能 ;过量的Pb2 + 使BaTiO3基陶瓷中部分晶粒异常长大 .适当的玻璃熔制温度可在促进烧结的同时维持BaTiO3的细晶效应 ,保证了材料良好的介电性能 .当玻璃熔制温度为 12 0 0～ 12 40℃时 ,所制备的BaTiO3基陶瓷的介电常数为 2 73 9～ 2 82 0℃ ,tgδ为 89× 10 - 4 ～ 94× 10 - 4 .Effects of boron-lead-zinc glass on the fine_grain BaTiO 3 based ceramics are mainly discussed. The increase of glass amount can lower sintering temperature, but make the dielectric properties of the ceramics worse at the same time. Pb 2+ cations in glass can diffuse into BaTiO 3 lattice during sintering, and improve the properties of ceramic. Excessive amount of Pb 2+ will result in some large grains in the ceramics. Proper melting temperature of glass can accelerate sintering process and maintain the fine_grain BaTiO 3 simultaneously, obtaining good dielectric properties of the material. When the melting temperature of glass is 1 200—1 240 ℃,the dielectric constant and dielectric loss of the ceramics based on BaTiO 3 are 2 739—2 820 ℃ and 89×10 -4 —94×10 -4 respectively.

关 键 词：中温烧结 细晶钛酸钡陶瓷 玻璃 硼铅锌系玻璃 介电性能 

分 类 号：TQ174.756[化学工程—陶瓷工业]