| Title |
Effect of Frequency on Alternating Current Electrochemical Etching in Hydrochloric Acid Electrolytes |
| Authors |
정재한(Jae Han Jeong) ; 김성수(Sung Su Kim) ; 김현기(Hyun Gi Kim) ; 최창희(Chang Hee Choi) ; 이동녕(Dong Nyung Lee) |
| Abstract |
A study has been made of the effects of frequency and bath temperature on the pit size, structure of 99.98% aluminum foil AC etched in 1.5M HCl solution and its capacitance after anodization. The maximum capacitance was obtained at a certain frequency value, f_M, which was shifted to a higher value with increasing bath temperature. Below f_M, the foils were macro-thinned, resulted in low capacitane, and above f_M, they showed very irregular etched morphology. The etch pit size decreased with increasing etching frequency. The frequency effect could be explained using galvanodynamic voltammetry polarization curves. |