2021 Volume 70 Issue 4 Pages 122-125
The corrosion behavior of carbon steel in the sulfate solutions with Mg2+ was investigated using cyclic corrosion tests and cyclic voltammetry. In the cyclic corrosion tests, the addition of Mg2+ tended to suppress corrosion of carbon steel and formed sulfur-concentrated layers between steel and rust. The results of cyclic voltammetry showed that cathode peak appeared as the number of cycles increased in the sulfate solution with Mg2+. These results suggest that the addition of Mg2+ in the sulfate solution accelerates reduction of rust and formation of sulfur-concentrated layers, and these layers suppress corrosion reactions.
