摘要
The cube texture and the surface corrosion structure of aluminum anode foil for high voltage electrolytic capacitor containing trace Sn were investigated based on quantitative texture analysis and microstructure observation under SEM. High volume fraction of cube texture over 95% and obviously higher specific capacity are obtained in the foils with less than 0.002% Sn. It is indicated that the corrosion behavior of trace Sn on aluminum surface is similar with that of Pb. Higher content of Sn over 0.002% reduces the cube texture component and therefore the specific capacity. Sn, as an eco-friendly microelement, can be applied to replace Pb in improving the homogenous pitting behaviors of high voltage aluminum foils.
The cube texture and the surface corrosion structure of aluminum anode foil for high voltage electrolytic capacitor containing trace Sn were investigated based on quantitative texture analysis and microstructure observation under SEM. High volume fraction of cube texture over 95% and obviously higher specific capacity are obtained in the foils with less than 0.002% Sn. It is indicated that the corrosion behavior of trace Sn on aluminum surface is similar with that of Pb. Higher content of Sn over 0.002% reduces the cube texture component and therefore the specific capacity. Sn, as an eco-ffiendly microelement, can be applied to replace Pb in improving the homogenous pitting behaviors of high voltage aluminum foils.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2008年第4期879-883,共5页
Transactions of Nonferrous Metals Society of China
基金
Project(50571020) supported by the National Natural Science Foundation of China
Project(20040008010) supported by the Doctoral Foundation of the Education Ministry of China
关键词
电解电容器
铝箔
锡
铅
腐蚀行为
electrolytic capacitor
aluminum foil
Sn
Pb
corrosion
