Assessment of the Corrosion Behavior of Mechanically Improved Mild Steel Surface Designed For Marine Application

Abstract

This experiment was necessitated by the need to improve the corrosion resistance of mild steel for engineering applications. Animal bones, periwinkle shell and snail shell were selected as the carburizer. Each of these carburizers was pulverized and blended with an energizer, calcium carbonate (CaCO₃). The treatment was carried out at 100°C intervals at temperatures ranging from 700 to 1000°C. To imitate a marine environment, 3.5 percent sodium chloride was created. For the corrosion experiment, linear polarization was used, and an optical microscope was used to examine the effects of the treatments on the structures. According to the findings, the selected carburizers can compete favourably and perform better than the as-received (AR) sample in the chosen simulated marine environment. This is as a result of the diffusion of carbon atom from the carburizer, through the sample’s skin of the steel. Finally, it was discovered that the carburized samples had better corrosion resistance than the AR samples.