摘要
为了制备高电位梯度的ZnO压敏电阻,采用了新的粉体制备方法,即高能球磨Bi2O3和Sb2O3两种添加剂12 h,再与其它氧化物共同高能球磨5h。扫描电镜及各个烧结温度下电性能、致密度的实验结果证明:此法制备的粉体压片后,1000℃烧结时,其电位梯度高达1516V/mm,漏电流为3.0μA,非线性系数为22。
The constituent oxides were prerpared by milling ZnO, Bi2O3 , Sb2O3, Cr2O3, Co2O3, MnO2 together for 5h, in which synthetic Bi2O3 and Sb2O3 powder had been firstly milled for 12h. The ZnO-based varistors were produced by sintering at 1 000℃. And the electric properties of obtained varistors are the leakage current of 3.0 μA, the nonlinear coefficient of 22, the voltage gradient of 1 516V/mm, respectively.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2007年第1期11-13,共3页
Electronic Components And Materials
基金
国家自然科学基金资助项目(50471045)
上海市科委纳米专项(0452nm026)
关键词
电子技术
高能球磨
ZNO压敏电阻
XRD
电性能
electron technology
high-energy ball milling
ZnO varistor
XRD
electrical property
