발간논문

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Vol.32, No.11, 1362 ~ 1372, 1994
Title
Alternating Current electrochemical Etching of High Purity aluminum Foil ( Effect of chloride concentration , current density and frequency )
정재한 , 김성수 , 김현기 , 최상희 , 이동녕 , 오규환 Jae Han Jeong , Sung Su Kim , Hyun Gi Kim , Chang Hee Choi , Dong Nyung Lee , Kyu Hwan Oh
Abstract
A study has been made of the effects of HCl concentration, current density and frequency on the etch pit size and distribution in 99.98% aluminum foil etched by alternating current electrochemical etching techinique and the capacitance of the foil after anodization. The highest capacitance was obtained under the etching condition of 1.5 M HCl and 10 ㎐ irrespective of current density. The higher chloride ion concentration and the current density and the lower frequency gave rise to the deeper etched layer and the smaller etch pit size. The individual etch pits were aggregated when the chloride ion concentration and current density decreased and the frequency increased.
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