ZnO-B_2O_3-SiO_2玻璃对Ca[(Li_(1/3)Nb_(2/3))_(0.95)Zr_(0.15)]O_(3+δ)陶瓷微波介电性能的影响  

EFFECT OF ZnO-B_2O_3-SiO_2 GLASS ON MICROWAVE DIELECTRIC PROPERTIES of Ca(Li_(1/3)Nb_(2/3))_(0.95)Zr_(0.15)]O_(3+δ) CERAMICS

作　　者：熊钢[1,2] 周东祥[3] 龚树萍[3] 

机构地区：[1]咸宁学院信息工程学院 [2]华中科技大学,武汉430074 [3]华中科技大学

出　　处：《中国陶瓷》2008年第4期12-14,共3页China Ceramics

基　　金：国家高技术研究发展计划资助项目(编号:2001AA-ZB3201-02);湖北省科技攻关计划资助项目(编号:2004AA102A01)

摘　　要：研究了ZnO-B2O3-SiO2（ZBS）玻璃对陶瓷的烧结性能及微波介电特性的影响。研究表明ZBS的掺入能有效降低Ca[（Li1／3Nb2／3）0.95Zr0.15]O3＋δ陶瓷体系的烧结温度150-200℃，谐振频率温度系数随ZBS掺入量增加及烧结温度的提高，由负值向正值方向移动。在1000℃，掺入质量分数7wt％的ZBN，陶瓷微波介电性能最佳：εr=31．1，Qf=9550GHz，Tf=-8．9ppm／℃，在960℃烧结4小时，可获得介电性能为：εf=28．6，Qf=641OGHz，Tf=-9．8ppm／℃陶瓷样品。The effects of ZnO-B2O3-SiO2 （ZBS） glass on the sinterability and microwave dielectric properties of Ca[（Li1/3Nb2/3）0.95Zr0.15]O3＋δ ceramics were investigated . ZBN glass doping can effectively reduce sintering temperatue by 150-200℃ . The temperature coefficient of resonator frequency Tf increased with an increase of ZBS glass content and sintering temperatue. When ZBS glass of 7wt% were added, the optimum microwave dielectric properties： εt=31.1, Qf=9530GHz and Tr =-8.9ppm/℃ were obtained at the sintering temperature of 1000℃ . Furthermore, specimens with 7wt% ZBS glass sintered at 960℃ for 4h showed good microwave dielectric properties of εt=28.6, Qf=6410GHz, and T r=-9.Sppm/℃ .

关 键 词：Ca[(Li1/3Nb2/3)0.95Zr0.15]O3+δ陶瓷 低温烧结 ZBS玻璃 微波介电特性 

分 类 号：TQ174.756[化学工程—陶瓷工业] TQ171.718[化学工程—硅酸盐工业]