ZnO-B_2O_3-SiO_2掺杂对锆酸钙基陶瓷性能的影响  

Effect of ZnO-B_2O_3-SiO_2 glass doping on properties of CaZrO_3 microwave dielectric ceramics

作　　者：李栋[1] 李谦[1] 黄金亮[1] 顾永军[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《电子元件与材料》2013年第9期5-8,共4页Electronic Components And Materials

基　　金：河南省国际科技合作计划资助项目(No.0346620012);河南省科技发展计划资助项目(No.092300410135)

摘　　要：研究了ZnO-B2O3-SiO2(ZBS)玻璃掺杂量对CaZrO3陶瓷烧结性能、物相组成、微观组织形貌和介电性能的影响。结果表明:通过掺杂ZBS,可使CaZrO3陶瓷的烧结温度由1 550℃降至1 000℃,且无第二相生成,相对密度达97.8%。当ZBS添加量为质量分数15%时,CaZrO3陶瓷在1 000℃烧结3 h获得良好的介电性能:εr=25,Q·f=8 584 GHz,τf=–45×10–6/℃。With ZnO-B2O3-SiO2（ZBS） glass as a liquid phase sintering assistant, the effects of ZBS doping on the sintering performance, phase composition, microstructure morphology and dielectric properties of CaZrO3 ceramics were investigated. The results indicate that ZBS glass can be used as sintering assistant to reduce the sintering temperature of CaZrO3 ceramics from 1 550 ℃ to 1 000 ℃ without second phase formation. When the mass fraction of ZBS glass is 1＇5%, a high relative density of 97.8% and good dielectric properties Of er=25, Q .f= 8 584 GHz, rf= -45 × 10^-6/℃ are obtained for the CaZrO3 ceramics sintered at 1 000 ℃ for 3 h.

关 键 词：微波介质陶瓷 CaZrO3陶瓷 低温烧结 介电性能 液相烧结 ZBS 

分 类 号：TQ174[化学工程—陶瓷工业]