不同温度下形成的阳极氧化铝膜介电性能的研究  

Dielectric properties of anodic alumina films formed at different temperatures

作　　者：秦立杨 李鹏泽 韩修豪 李博文 朱绪飞[1] QIN Liyang;LI Pengze;HAN Xiuhao;LI Bowen;ZHU Xufei(School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing210094,China)

机构地区：[1]南京理工大学化学与化工学院,江苏南京210094

出　　处：《电子元件与材料》2024年第8期966-970,共5页Electronic Components And Materials

基　　金：国家自然科学基金(51577093);国家自然科学基金(61171043)。

摘　　要：为了改善铝电解电容器漏电流较大的问题,从阳极氧化温度的角度出发,对比了在常温20℃以及高温80℃通过阳极氧化形成的阳极氧化膜的闪火电压,并测试其漏电流以及表面形貌。结果表明,所用六种电解液的闪火电压都在490~535 V之间,在高温下阳极氧化膜的漏电流比常温下的低30%~62%。从扫描电子显微镜的结果中得到高温下形成的阳极氧化膜断面上的孔洞比常温下的更少,孔径更小,从而导致高温下的漏电流更低。该结果对电容器工作电解液的研发和电容器生产过程中老练工艺的改进有重要的指导意义。In order to address the issue of high leakage current in aluminum electrolytic capacitors,the sparking voltage of anodized aluminum oxide films formed at room temperature(20℃)and high temperature(80℃)was compared.The leakage current and surface morphology of the films were also tested.The results show that the sparking voltage of six types of electrolytes varied between 490 V and 535 V.The leakage current of the anodized film formed at high temperature was 30%to 62%lower than that formed at room temperature.Scanning electron microscopy revealed that the films formed at high temperature had fewer and smaller pores compared to those formed at room temperature,resulting in lower leakage current.These findings are significant for the development of working electrolytes and the improvement of aging processes in the production of the capacitor.

关 键 词：阳极氧化 铝电解电容器 闪火电压 介电性能 

分 类 号：TM535[电气工程—电器]