BaSnO3／BaBiO3复相陶瓷的显微结构及电性能  

Microstructure and electric properties of BaSnO_3/BaBiO_3 composite ceramics

作　　者：黄晋[1] 刘心宇[1,2] 李川[1] 王洋[1] 

机构地区：[1]桂林电子科技大学材料系,广西桂林541004 [2]中南大学材料学院,湖南长沙410083

出　　处：《电子元件与材料》2009年第5期5-7,共3页Electronic Components And Materials

基　　金：广西研究生教育创新计划资助项目(No.2008105950805M437)

摘　　要：以BaCO3、SnO2和Bi2O3为原料,采用传统固相反应法制备了具有NTC特性的BaSnO3/BaBiO3复相陶瓷。借助XRD、SEM和R-t特性测试仪,研究了该陶瓷的相结构、断面形貌及n(BaBiO3)对其电性能的影响。结果表明:随着r(BaBiO3∶BaSnO3)从0.1∶1.0增大到0.9∶1.0,样品的B25/85值从4400K降低到3000K,同时室温电阻率ρ25从106Ω·cm降低到103Ω·cm。Using BaCO3, Bi2O3 and SnO2 as starting materials, BaSnO3/BaBiO3 composite ceramics with NTC characteristics were prepared by conventional solid-state reaction method. The effects of phase structure, cross-section morphology and n（BaBiO3） on the electric properties of BaSnO3/BaBiO3 composite ceramics were investigated by XRD, SEM and R-t characteristic tester. The results show that when the mole ratios of BaBiO3 to BaSnO3 increase from 0.1 ： 1.0 to 0.9 ： 1.0, the B25/85 value of sample decreases from 4 400 K to 3 000 K, and meanwhile the ,ρ25 decreases from 10^6Ω.cm to 10^3 Ω. cm.

关 键 词：BaSnO3 BaBiO3 NTC特性 显微结构 电性能 

分 类 号：TN37[电子电信—物理电子学]