摘要
粉体是ZnO压敏瓷制备的起点,粉料的混合性直接影响其综合电性能。采用不同球磨球磨时间制备氧化锌压敏瓷粉体,通过扫描电镜和X射线衍射分析,探讨球磨时间对氧化锌压敏瓷电性能和微观组织的影响。研究结果表明,球磨5h制备的粉体烧结后综合电性能最好,其电位梯度为356V/mm;非线性系数为36.4,漏电流为1.38μA,致密度98.6%。
Powders were the beginning of the zinc oxide - based varistors, which had indirectly effect on their electrical properties. Zinc oxide - based varistors were prepared by high- energy mechanical activation varistors were characterized by XRD subjecting the mixed powders to foe different time. The structural and electrical properties of ZnO and SEM analysis, as well as by electrical measurements. The result showed that 5h was the optimal milling time, coefficient reaching 36.4, leakage current of Key words ：ZnO varistor; ball milling time ; which exhibited breakdown field of 356 V/mm, nonlinear 1.38μA, and the relative density of 98.6%. electrical property
出处
《山东化工》
CAS
2012年第9期4-7,共4页
Shandong Chemical Industry
关键词
ZnO压敏瓷
球磨时间
电性能
ZnO varistor
ball milling time
electrical property
