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http://dx.doi.org/10.5695/JKISE.2019.52.2.103

Crystal Structure Control of Calcareous Deposit Films Formed by Pulse Electrodeposition Process in Seawater and Their Properties  

Park, Jun-Mu (Division of Marine Engineering, Korea Maritime and Ocean University)
Lee, Seung-Hyo (Division of Marine Engineering, Korea Maritime and Ocean University)
Publication Information
Journal of the Korean institute of surface engineering / v.52, no.2, 2019 , pp. 103-110 More about this Journal
Abstract
As an anti-corrosion method in seawater, cathodic protection is widely recognized as the most effective and technically appropriate corrosion prevention methodology for marine structures against harsh corrosive environment. When applying the cathodic protection in seawater, the surface of the metal facilities the formation of compounds of $CaCO_3$ and $Mg(OH)_2$. These mixed compounds are generally called 'calcareous deposits'. This layer functions as a barrier against the corrosive environment and functions to further inhibit the corrosion process and then leading to a decrease in current demand for cathodic protection. However, calcareous deposit films are partially formed on the surface of the cathode and there are some difficulties to maintain both a corrosion resistance for a long period of time and a strong adhesion between deposits and base metal. In this study, the pulse electrodeposition process was applied to improve adhesion and corrosion resistance of the calcareous deposit films, and to solve the problem of hydrogen embrittlement at high current density. The uniform and compact calcareous deposit films were prepared by pulse electrodeposition process, and their properties were characterized using various surface analytical techniques together with electrochemical methods.
Keywords
Pulse electrodeposition process; Calcareous deposit films; Aragonite crystal structure; Seawater;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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