Corrosion of Carbon Steel and Chromium Steel in Different Aqueous Media

Abstract

This research was undertaken to examine the corrosion behavior of low carbon steel and chromium steel, in different aqueous medium, to test the corrosion behavior of it in: Sodium chloride, sodium sulfite, hydrochloric acid, sulfuric acid and nitric acid solutions, in concentration range from 0.1 to 0.4 mol | L in the same periods of time, for all seasons hence, to observe the temperature effect the corrosion rate. Inhibitor effect was examined using thiourea in nitric acid and sodium chloride solutions, the obtained results showed that, the acids are more corroding than the salts, and the corrosion increased with increasing the concentration of acids, and the higher corrosion was founded in nitric acid solutions. Thiourea in the solution decreased the corrosion rate and this decrease was found to be larger in sodium chloride solution in comparison with nitric acid solution.