K^+掺杂对SnO_2-LiZnVO_4系湿敏陶瓷性能的影响  

Study on the Properties of K^+-doped Humidity Sensitive Ceramics of SnO_2-LiZnVO_4 System

作　　者：胡素梅[1] 陈海波[1] 傅刚[2] 

机构地区：[1]茂名学院技术物理系,广东茂名525300 [2]广州大学物理系,广东广州510405

出　　处：《电子元件与材料》2004年第7期16-18,共3页Electronic Components And Materials

基　　金：广东省科技计划资助项目(2002A1070304)

摘　　要：为了提高 SnO_2-LiZnVO_4系湿敏材料的性能,采用共沉淀法制备出 SnO_2-K_2O-LiZnVO_4系纳米湿敏粉体。考察了液相掺杂 K+对材料湿敏性能、复阻抗特性和电容特性的影响。实验结果表明,采用共沉淀法制备纳米粉体并使K+液相掺杂量为 2.5%(摩尔分数),可使湿敏材料低湿电阻小、灵敏度适中,适当的 K+添加量可明显改善 SnO_2-LiZnVO_4系纳米材料的感湿特性。In order to improve the properties of humidity sensitive material of SnO_2-LiZnVO_4 system, SnO_2-K_2O-LiZnVO_4 system nano-sized powders were obtained by co-precipitation method. The influences of the liquid-doped K+ on the properties of humidity sensitive, composite impendence and capacitance were investigated. The experimental results indicate that humidity sensitive materials with lower resistance at lower humidity and proper humidity sensitivity can be made by 2.5mol% liquid-doped K+. The humidity sensitive properties of the nano-sized material may be improved by controlling the amount of liquid-doped K+.

关 键 词：湿敏性能 复阻抗特性 电容特性 

分 类 号：TN304[电子电信—物理电子学]