2012 Volume 61 Issue 10 Pages 376-383
Cut edge corrosion is well known problem at shear cut edge of galvanized steel sheet, where the zinc coating is consumed early. The cut edge corrosion is regarded as galvanic corrosion under a thin electrolyte film. A new numerical analysis model for galvanic corrosion has been developed in order to make clear the mechanism of the cut edge corrosion. This model has been considered oxygen concentration in the electrolyte, because the corrosion rate under a thin electrolyte film is controlled by oxygen dissolving from air. In addition, ion transportation and reactions are considered. This paper explains details of the numerical model and numerical analysis results.
