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Formation of Environment Friendly Electrodeposition Films by CO2 Gas Dissolved in Seawater and Their Corrosion Resistance
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 Title & Authors
Formation of Environment Friendly Electrodeposition Films by CO2 Gas Dissolved in Seawater and Their Corrosion Resistance
Lee, Sung-Joon; Kim, Hye-Min; Lee, Seul-Gee; Moon, Kyung-Man; Lee, Myeong-Hoon;
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The peculiar feature of cathodic protection in seawater has the capability to form mineral calcareous deposits such as magnesium and calcium on metal surfaces. It is assumed that ions are generated close to the metal surface as a result of cathodic protection and generated ions increases the pH of the metal/seawater interface outlined as the following formulae. (1) , or (2) . And high pH causes precipitation of and in accordance with the following formulae. (1) , (2) . The focus of this study was to increase the amount of with the injection of gas to the solution for accelerating process of the following formulae. (1) , (2) . Electrodeposit films were formed by an electro-deposition technique on steel substrates in solutions of both natural seawater and natural seawater dissolved gas with different current densities, over different time periods. The contents of films were investigated by scanning electron microscopy(SEM) and X-ray diffraction(XRD). The adhesion and corrosion resistance of the coating films were evaluated by anodic polarization. From an experimental result, only were found in solution where injected gas regardless of current density. In case of injecting the gas, weight gain of electrodeposits films hugely increased and it had appropriate physical properties.
Calcareous deposit films;; gas;;Cathodic protection;
 Cited by
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