Effect of Change in Sulfuric Acid Concentrations and Different Temperatures on Corrosion of Heat-Treated Moderate Carbon Steel

This study looked at the effects of successive heat treatments (first quenching, first tempering, second quenching, and second tempering) on the corrosion rate of moderate carbon steel in a methodical manner. Using distilled water, the specimens were cooled at 10 oC following the initial quenching and at different temperatures (0, 10, 20, 30 oC) following the second quenching. Based on the results of repeated heat treatment experiments and corrosion rate experiments in these models, the moderate carbon specimens that underwent the heat treatments have a high corrosion resistance compared to the original models (prior to the application of the heat treatments). At different temperatures (298, 303, and 313 K) and concentrations (0.2, 0.3, and 0.4 N–H2SO4), in an acidic moderate. The study also showed that corrosion resistance decreases with concentration and with increasing corrosion-moderate temperature in heat-treated models. Another finding is that the models with the best corrosion resistance were those that underwent a second quench and cooling process. Another finding shows that the models with the highest corrosion resistance were those that experienced a second quench and were cooled in water at zero oxygen content.