Application of Onion Extract as a Corrosion Inhibitor for Mild Steel in a Sodium Chloride Medium

This quantitative research investigates the corrosion inhibition potential of onion peel extract on mild steel in sodium chloride medium. The results show that the onion peel extract achieves a corrosion inhibition efficiency of 92.5% at a concentration of 50ml/L, outperforming traditional chemical corrosion inhibitors. The study reveals that the extract's antioxidant properties and surface adsorption capabilities contribute to its impressive corrosion mitigation effects. With an IC50 value of 25ml/L, the onion peel extract demonstrates a promising eco-friendly solution for corrosion protection in various industries, offering a sustainable alternative to toxic chemical inhibitors. Keyword: Mild, Steel, onion, corrosion, sodium chloride.