纳米复合技术改善ZnO压敏电阻微观结构及电性能一致性的研究  

Improvement of the Uniformity on Electric Performance and Microstructure of Zinc Oxide Varistors Using Nano-composite Techniques

作　　者：李红耘 罗绍华[1] 乔爱平 骆天荣 冯孝珍 熊西周 

机构地区：[1]山西丰海纳米科技有限公司,山西太原030001

出　　处：《电瓷避雷器》2005年第2期26-29,共4页Insulators and Surge Arresters

基　　金：国家863基金资助项目(2002AA302614)

摘　　要：采用氨浸法制备ZnO纳米复合压敏瓷料的工艺手段,研制出压敏场强大于330V/m m,漏电流小于1μA,非线性系数大于58的压敏电阻器,电性能的一致性要优于普通压敏电阻器的5～10倍。用扫描电镜和能谱对瓷体显微结构及面扫成分进行了分析,讨论了ZnO压敏电阻材料结构和电性能的关系。研究表明,加入纳米复合粉制备压敏电阻是降低大规模生产中的成本,提高ZnO压敏电阻电性能及其一致性的有效途径。The technology of adding ZnO nano-composite powder by ammonia-solution method is introduced to conventional ZnO varistor manufacture. Of the resultant varistors, the potential slop is more than 330 V/mm,the leakage current less than 1μA and nonlinear coefficient more than 58. It has greatly improved the uniformity of chips′ electric performance 5~10 times than that of ZnO varistors by conventional process. The microstructure and area-scanning composition analysis are analyzed through SEM and EDAX respectively. The relation of microstructure and electrical performances is investigated preliminary. The experiment results are explained that adding the nano-composite powder is a effective way of enhancing the uniformity of electrical performances of ZnO varistors based on a low cost and large scale manufacturing.

关 键 词：纳米复合 氧化锌压敏电阻片 微观结构 电性能 一致性 

分 类 号：TM54[电气工程—电器]