超细(Ba,Sr,Cd)TiO_3基多层陶瓷电容器陶瓷的研究  

Study on Super Fine(Ba,Sr,Cd)TiO_3 Series Multilayer Ceramic Capacitor Ceramics

作　　者：黄新友[1] 陈志刚[1] 赵晨[1] 高春华[1] 陈祥冲[1] 

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013

出　　处：《电子器件》2007年第3期762-765,共4页Chinese Journal of Electron Devices

摘　　要：采用溶液-溶胶-凝胶法制备(Ba0.70Sr0.25Cd0.05)TiO3纳米粉体,利用所得到的纳米粉体研究了(Ba0.70Sr0.25Cd0.05)TiO3基多层陶瓷电容器用超细陶瓷的制备.对比研究了超细电容器陶瓷和传统固相法电容器陶瓷的性能.采用扫描电镜分析了两种方法得到的陶瓷的显微结构.结果表明:采用纳米粉体制备的(Ba0.70Sr0.25Cd0.05)TiO3基电容器陶瓷具有晶粒尺寸约为1μm,其性能为:介电常数为1409.44,介质损耗为0.0175,陶瓷的密度是5.22g·cm-3,烧结温度为1300℃,大大降低了烧结温度,比传统固相法的陶瓷性能有较大的改善.The nanometer （Ba0.70Sr0.25Cd0.05）TiO3 powder used for multilayer ceramic capacitor was prepared by means of solution-sol-gel method . The preparation of super fine （Ba0.70Sr0.25Cd0.05） TiO3 series multilayer ceramic capacitor ceramics was studied by using nanometer （Ba0.70Sr0.25Cd0.05）TiO3 powder. The properties of super fine capacitor ceramics and that of conventional solid phase method ceramics were contrastly studied. The microstructure of ceramics obtained from two kinds of method was analysed by means of scanning electron microscope（SEM）. Results show that the grain size of （Ba0.70Sr0.25Cd0.05）TiO3 series capacitor ceramics prepared by using nanometer （Ba0.70Sr0.25Cd0.05） TiO3 powder is about 1 × 10^-6 m . The comprehensive properties of （Ba0.70Sr0.25Cd0.05） TiO3 fine ceramics is good , in which the dielectric constant is 1 409.44, the dielectric loss is 0.017 5, the density of ceramics is 5.22 g ·cm^-3, the sintering temperature is 1 300℃,and decreasing greatly sintering temperature. The properties of super fine capacitor ceramics is more improvement than that of conventional solid phase method capacitor ceramics.

关 键 词：无机非金属材料 超细陶瓷 多层陶瓷电容器 溶胶-凝胶法 钛酸钡锶镉 陶瓷 

分 类 号：TQ174[化学工程—陶瓷工业]