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Received December 12, 2006
Accepted February 26, 2007
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Effect of acid concentration and current density on DC etching of aluminum electrolytic capacitor foil
Department of Mechanical Engineering, National Central University, Chung-Li, Taiwan
s9323051@cc.ncu.edu.tw
Korean Journal of Chemical Engineering, September 2007, 24(5), 881-887(7), 10.1007/s11814-007-0059-x
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Abstract
This work studies the effects of acid concentration and current density on etching morphology, microstructure and static capacity of the aluminum foils used in high-voltage electrolytic capacitors. The behavior associated with electrochemical etching was investigated with a potentiostat. The aluminum etching type of DC etching is greatly influenced by the etching potential. The static capacity increased to 0.65 uF/cm2 with 540 V forming voltage by optimization of the etching parameters used in this work.
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Hen Z, Weibin Z, Mater. Sci. Eng. B-Solid State Mater. Adv. Technol., B3, 479 (1989)
Osawa N, Fukuoka K, Corros. Sci., 42, 585 (2000)
Lin W, Tu GC, Lin CF, Peng YM, Corrosion Science, 38, 889 (1996)
Hebert K, Alkire R, J. Electrochem. Soc., 135, 2447 (1988)
Zhou Y, Hebert KR, J. Electrochem. Soc., 145, 2100 (1998)
