Study of Silicone Dioxide:Sodium Oxide (SiO2:Na2O) Ratio as a Corrosion Inhibitor for Mild Steel in 0.5 M HCl

Abstract

In recent years, the search for eco-friendly alternatives to conventional corrosion protection methods has gained significant attention due to the hazardous and carcinogenic nature of hexavalent chromium-based protection. Sodium silicate has shown promise as a corrosion inhibitor in several studies. This research aims to extract silica from rice husks and utilize it to prepare a green silicate-based corrosion inhibitor. The study will investigate the corrosion performance of this inhibitor using the weight loss method on mild steel exposed to 0.5 M hydrochloric acid (HCl). The objectives of the research include characterizing the extracted silica, examining the impact of different SiO₂:Na₂O ratios of silicate solutions as inhibitors, determining the optimal conditions of silicate solutions as corrosion inhibitors, and comparing the corrosion rate of mild steel with and without the silicate-based inhibitor. This research contributes to the development of eco-friendly corrosion protection methods and expands the understanding of the potential of silica-based inhibitors for mitigating corrosion in various fields.