纳米复合粉体制备压敏陶瓷的晶界相变及稳定性  

Varistor Ceramics of Composite Nanopowders: the Grain Boundary Phase Transformation and Stability

作　　者：康雪雅[1] 陶明德[1] 王天雕[1] 韩英[1] 涂铭旌[2] 

机构地区：[1]中国科学院新疆物理所,新疆乌鲁木齐830011 [2]四川大学材料工程系,四川成都610065

出　　处：《电子元件与材料》2003年第1期13-16,共4页Electronic Components And Materials

基　　金：新疆科技厅自然科学基金资助项目(98801)

摘　　要：研究了纳米复合压敏陶瓷粉体制备的微型压敏芯片在不同温度退火前后电性能的稳定性,不同退火温度下晶界相结构的转变;研究确定了晶界耗尽层间隙锌离子的缺陷类型、缺陷密度与退火温度的关系,在此基础上提出了对稳定性做出贡献的晶界相变和间隙锌离子迁移的复合模型。The stability of mini-varistor slices annealed at different temperature was investigated. The mini-varistor slices are prepared from composite nanopowder. The grain boundary phase transformation at different annearing and the effects annealing temperature on the defect model, defect density and change of defect are investigated. Based on the investigation results, a compound model of grain boundary phase transformation and interstitials Zn ion migrate from depletion layer to grain boundary interface is proposed, that play a important part for the varistor stability.

关 键 词：纳米复合材料 压敏陶瓷 晶界相变 稳定性 

分 类 号：TN304.93[电子电信—物理电子学]