添加BCB对固相合成CBS材料的微观结构及介电性能的影响  

Effects of BaCu(B_2O_5) additives on microstructure and dielectric properties of CaO-B_2O_3-SiO_2 materials prepared by solid state reaction technique

作　　者：刘剑 聂敏 LIU Jian;NIE Min(Shenzhen Sunlord Electronics Co., Ltd, Shenzhen 518110, Guangdong Province, China)

机构地区：[1]深圳顺络电子股份有限公司,广东深圳518110

出　　处：《电子元件与材料》2017年第5期20-24,共5页Electronic Components And Materials

摘　　要：采用传统固相合成法制备CaO-B_2O_3-SiO_2(CBS)系玻璃陶瓷材料。借助XRD、SEM和电性能测试手段,系统研究了添加BaCu(B_2O_5)(BCB)对CBS材料微观结构与介电性能的影响。结果表明,添加BCB未改变CBS主晶相,其液相润湿作用加速CaSiO_3的扩散,将CBS的烧结温度从960℃降低至875℃,同时其致密性得到提高,介电常数与介电损耗略微增加。纯CBS经960℃致密烧结时,相对介电常数ε_r为6.17,介电损耗tanδ为0.0012(14GHz),而添加4%~6%(质量分数)BCB的CBS材料,在烧结温度为875℃时,致密性优异,ε_r为6.36~6.39,tanδ为0.0014~0.0015(14 GHz)。The CaO-B2O3-SiO2(CBS)glass-ceramics were prepared by solid state reaction technique.The effects of BaCu(B2O5)(BCB)additives on the microstructure and dielectric properties of CBS glass-ceramics were studied systematically through XRD,SEM and electrical propeties characterization.The results show that the main phase of BCB doped CBS is not changed.Because of the liquid phase sintering mechanism,the sintering temperature of CBS is reduced from960℃to875℃,and the density is increased.However,the dielectric constant and the dielectric loss are increased slightly.CBS material without BCB additives sintered at960℃possesses good dielectric properties with the relative permittivity of6.17and the dielectric loss of0.0012(14GHz).When the sintering temperature is875℃,CBS material with the addition of4%-6%(mass fraction)BCB shows excellent dielectric properties,the relative permittivity is6.36-6.39and the dielectric loss is0.0014-0.0015(14GHz).

关 键 词：固相合成法 LTCC BaCu(B2O5) CAO-B2O3-SIO2 烧结温度 介电性能 

分 类 号：TM28[一般工业技术—材料科学与工程]