摘要
采用无机可溶性盐为原料通过化学沉淀的方法制备了新型优质的纳米级ZnO压敏电阻材料.并且,利用XRD,TEM,SEM等分析技术,对其微观结构进行表征和讨论.研究结果表明,由于采用化学共沉淀方法制备粉体颗粒细小、活性高、微观成分均匀,使制备压敏电阻的烧结温度降低到950℃,同时显示更优良的电性能.其非线性系数和电压梯度分别达到87.2,988.2V/mm.
A chemical coprecipitation process for preparation of doped ZnO varistor nanometer powder was described in this paper. The influences of the nanometer powders on the microstructure, the nonlinear parameter, the breakdown voltage and the thermal properties of ZnO varistor were investigated. As a result of the experiment, fine and active multiplex composite nanometer powders were prepared. The improvement electrical characteristics of ZnO varistor produced by this method are that nonlinear coefficient α≈87.2 and that normalized breakdown voltage is 988.2 V_~1mA /mm. The microstructure of sample was characterized and discussed with XRD, TEM and SEM techniques.
出处
《哈尔滨师范大学自然科学学报》
CAS
2005年第1期31-34,共4页
Natural Science Journal of Harbin Normal University
基金
哈师大博士启动基金的资助
