Proceedings of the Korean Institute of Surface Engineering Conference (한국표면공학회:학술대회논문집)
- 2016.11a
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- Pages.153-153
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- 2016
Effect of Anodizing Current Density on Anti-Corrosion Characteristics for Al2O3 Oxide Film
Al2O3 산화 피막의 내식성에 미치는 양극산화 전류밀도의 영향
- Published : 2016.11.17
Abstract
Aluminum alloys have poor corrosion resistance compared to the pure aluminum due to the additive elements. Thus, anodizing technology artificially generating thick oxide films are widely applied nowadays in order to improve corrosion resistance. Anodizing is one of the surface modification techniques, which is commercially applicable to a large surface at a low price. However, most studies up to now have focused on its commercialization with hardly any research on the assessment and improvement of the physical characteristics of the anodized films. Therefore, this study aims to select the optimum temperature of sulfuric electrolyte to perform excellent corrosion resistance in the harsh marine environment through electrochemical experiment in the sea water upon generating porous films by variating the temperatures of sulfuric electrolyte. To fabricate uniform porous film of 5083 aluminum alloy, we conducted electro-polishing under the 25 V at
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