| Title |
Corrosion Behaviors and Electrochemical Impedance Characteristics of Organic Coated Steel |
| Authors |
박세철(Se Cheal Park); 박익민(Ik Min Park); 송연균(Yon Gyun Song); 박정열(Jeong Real Park) |
| Abstract |
Specimens of carbon steel coated with chlorinated rubber primer have been immersed in 5% and 0.05% NaCl solutions and in a 0.35% (NH₄)₂SO₄+0.05% NaCl solution. Their electrochemical impedances at their corrosion potentials have been measured as a function of immersion time. Measured impedance data have been analyzed according to an equivalent circuit representing impedances across the organic film and the interface between the film and substrate. The film and substrate have been deteriorated more at the higher salt concentration. The corrosion at the interface has been controlled by the anodic dissolution of steel substrate and accelerated with time. |