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http://dx.doi.org/10.5916/jkosme.2007.31.2.173

An Electrochemical Study on the Corrosion Resistance Improvement of Galvanizing Steel by Dipping to Solution with Inhibitor  

Moon, Kyung-Man (한국해양대학교 공과대학 기계소재공학부)
Cho, Hwang-Rae (한국해양대학교 공과대학 기계소재공학부)
Kang, Tae-Young (유니온스틸주식회사 기술연구소 연구 2팀)
Lee, Myung-Hoon (한국해양대학교 해사대학 기관시스템공학부)
Kim, Yun-Hae (한국해양대학교 기계소재공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.31, no.2, 2007 , pp. 173-181 More about this Journal
Abstract
Recently, galvanizing method is predominantly being used not only a economical point of view but also due to it s stability and long life. For example, guard rail of high way, all kinds of structures for ship etc. were protected with galvanizing and demand of galvanized structural materials was being increased with more and more. However, galvanized structures were inevitably being deteriorated with time eventually because they were corroded with solution of galvanizing film and exfoliation of it s film in the present severe corrosive environment. Therefore, it is necessary to improve the corrosion resistance of the galvanizing film through various methods such as variation of chemical composition of galvanizing bath, chromate treatment and coating treatment. In this study, three test specimens such as pure galvanizing, galvarium, and chromate treatment were submerged at tap water with inhibitor addition. And the effect of their corrosion resistance improvement was comparatively investigated with electrochemical method. Corrosion current density of the galvanized steel was the largest among three specimens, however, the galvarium steel showed the lowest corrosion current density. Futhermore, these three kinds of test specimens indicated considerably excellent corrosion resistance by dipped at tap water with inhibitor addition. Especially, the galvanized steel showed the best effect of corrosion resistance improvement than other test specimens.
Keywords
Galvanizing; Galvarium; Chromate treatment; Corrosion resistance; Corrosion current density; Inhibitor;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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