https://scholars.lib.ntu.edu.tw/handle/123456789/73497
標題: | Pitting Behavior of Aluminum Foil during Alternating Current Etching in Hydrochloric Acid Containing Sulfate Ions | 作者: | Lin, C. S. Li, W. J. LinCS |
公開日期: | 2006 | 卷: | 153 | 期: | 1 | 起(迄)頁: | - | 來源出版物: | Journal of The Electrochemical Society | 摘要: | Sulfate ions in sodium chloride solutions effectively enhance the capacitance of aluminum foils etched with direct current. This study explored the effects of sulfate ions on pitting behavior of aluminum foils for low-voltage electrolytic capacitor during etching with alternating current. Experimental results indicate that the presence of sulfate ions in hydrochloric acid reduced the loss of aluminum due to undermining by the cubic pits. Furthermore, sulfate ions adsorbed on the aluminum surface increased the breakdown potential of the surface film and led to passivation of the existing pits. Consequently, the aluminum foil etched in the solution with the addition of sulfate ions displayed a more uniform pitted structure than that etched in the solution solely composed of hydrochloric acid. © 2005 The Electrochemical Society. All rights reserved. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/93305 https://www.scopus.com/inward/record.uri?eid=2-s2.0-33645537782&doi=10.1149%2f1.2131830&partnerID=40&md5=04612a0243626a259efc1f1a57dd1684 |
ISSN: | 00134651 | SDG/關鍵字: | Breakdown potential; Direct current; Low-voltage electrolytic capacitors; Sulfate ions; Capacitance; Electrolytic capacitors; Etching; Hydrochloric acid; Ions; Sodium chloride; Solutions; Sulfate minerals; Thin films; Aluminum foil |
顯示於: | 材料科學與工程學系 |
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