原料粉体特性对氧化锌压敏电阻微观形貌的影响  

Eff ect of the Characteristics of the Raw Material Powder on the Micro-morphology of Zinc Oxide Varistor

作　　者：余琼 郑旭珑 李明利 Yu Qiong;Zheng Xuong;Li Mingi(Zhejiang Pharmaceutical College,Zhejiang,315500;Zhejiang Zhongneng Electricity Co.,Ltd.,Zhejiang,323000)

机构地区：[1]浙江药科职业大学,浙江315500 [2]浙江中能电气有限公司,浙江323000

出　　处：《当代化工研究》2025年第2期46-48,共3页Modern Chemical Research

基　　金：丽水市经济开发区重点研发计划项目“高电压梯度和大能量吸收特性压敏电阻的研发与产业化”(项目编号:2022KFQZDYF22);浙江省2020年度产学合作协同育人项目“面向新工科的医疗器械类专业‘浙药-归创’校企协同育人体系研究”(项目编号:20200236);宁波市2021—2022年产教融合教育教学改革项目“基于产教深度融合的医疗器械类专业校企协同育人改革与实践”(项目编号:No.34)。

摘　　要：采用混料-成型-排胶-烧结传统陶瓷制备工艺制备出氧化锌压敏电阻陶瓷样品,对比了混料后经喷雾造粒再干压成型和直接干压成型两种工艺的影响,分析了材料样品的微观形貌,计算出其晶粒尺寸和不均匀度。结果表明:采用经喷雾造粒工艺处理的粉体原料能够获得具有较好微观形貌的氧化锌压敏电阻,其晶粒尺寸较小且晶粒尺寸分布均匀,能够获得更好的电性能。Using the traditional ceramic preparation process of mixing-forming-debinding-sintering,the ceramic sample of zinc oxide varistor was prepared,and the effects of two processes,which were spray granulation followed by dry pressing forming after mixing and direct dry pressing forming,were compared.The micro-morphology of the material samples was analyzed,and the grain size and non-uniformity were calculated.The results show that the powder raw material treated by the spray granulation process can obtain the zinc oxide varistor with a better micro-morphology,which has a smaller grain size and uniform grain size distribution,and can obtain better electrical properties.

关 键 词：压敏电阻 微观形貌 晶粒尺寸 不均匀度 

分 类 号：TM54[电气工程—电器]