Innovations in nanomaterials: A paradigm shift in surface engineering for corrosion mitigation

Abstract

The weight loss technique was utilized to examine the corrosion rates of mild steel in various aqueous solutions and operating conditions, both with and without an epoxy coating. It became out that the presence of salt and temperature increased the rate of corrosion while the pH level decreased. Significant reductions in corrosion rates occur in acidic conditions when coatings are present. In a saline solution, it did not work particularly well. Using X-ray diffraction, the diagnosis was acquired after a sol–gel method was used to create a MgO nanoparticle. The highest coating efficacy in an acidic solution was 96.9%, whereas the lowest coating efficacy in a saline solution devoid of nanoparticles was 29.8%. The performance of epoxy coatings in salty environments was improved by applying nanoscale magnesium oxide (MgO) up to a maximum value of 94%. Surface morphology was examined using the SEM test as well. A number of mathematical models were proposed to be employed in order to relate the corrosion rate to the operational state; a high correlation coefficient for the data advised that the polynomial interaction effect model be used.