Study of multifaceted eco-friendly nanoparticle zinc coating incorporation on mild steel.

Abstract

Mild steel's versatile application in various fields makes it a pivotal material, yet its vulnerability to corrosion demands effective protection methods. This work explores the potential synergy between plantain peel (PP) and snail shell particle (SSP) nanoparticles when combined in a Zn–MgO matrix to improve corrosion resistance in mild steel coatings. After a thorough investigation of various bath compositions and process conditions, the ZnO–MgO–20SSP–20PP coating was found to have improved electrical characteristics, decreased thickness with high-quality films, higher hardness (78 HRB), and excellent corrosion resistance. Corrosion tests showed a notable decrease (∼70% for the ZnO–MgO–20SSP–20PP sample) in the rate of corrosion, and optical micrographs confirmed the coating's capacity to reduce damage. A reliable predictive model (ANOVA) was produced by mathematical optimization utilising a central composite design, which highlighted the interplay of SSP and PP concentrations on corrosion rate. This extensive study provides eco-friendly alternatives for improved mild steel corrosion prevention by showcasing the diverse contributions of SSP and PP nanoparticles.

Keywords

• Mild steel
• Corrosion
• Snail shell
• Plantain peel
• Zinc