TiCN对钛酸钡基PTC热敏陶瓷性能的影响  

Effect of TiCN on properties for (Ba_(0.85)Sr_(0.11)Pb_(0.04)) TiO_3-based PTC thermistor ceramics

作　　者：郑锦清[1] 赵蕊红[1] 

机构地区：[1]华南理工大学材料学院,广东广州510640

出　　处：《电子元件与材料》2008年第1期45-47,共3页Electronic Components And Materials

摘　　要：采用固相反应法制备了TiCN掺杂的(Ba0.85Sr0.11Pb0.04)TiO3 PTC热敏陶瓷。研究了TiCN加入量对其显微结构和PTC性能的影响。结果表明:添加x(TiCN)为0.006时,可使晶粒结构均匀,PTC性能得到改善。所获样品的体积电阻率ρv为31.2Ω.cm,电阻温度系数αR为21%℃–1,升阻比lg(Rmax/Rmin)为5.7,居里温度tC为97℃,耐电压强度Vb为280 V.mm–1。TiCN-doped （Ba0.85Sr0.11Pb0.04） TiO3 PTC thermistor ceramic was prepared by solid state reaction method. The effects of TiCN-doped amount on its microstructure and PTC properties were researched. The results show that the grain construction is homageneous and PTC properties are improved when TiCN-doped amount is 0.006. Bulk resistivity Pv is 31.2Ω·cm, temperature coefficient αR is 21%℃^-1, jump range 1g（Rmax/Rmin） is 5.7, the Curie temperature tc is 97℃ and breakdown voltage Vb is 280 V·mm^-1.

关 键 词：电子技术 PTC热敏陶瓷 体积电阻率 电阻温度系数 升阻比 居里温度 耐电压强度 TICN 

分 类 号：TN373[电子电信—物理电子学]