Factorial Design Optimization of TiO2-Infused Superhydrophobic Coatings for Improved Steel Corrosion Protection

Abstract

This study investigates the development of a superhydrophobic coating on steel substrates using a factorial design method, focusing on its anti-corrosion applications. The coating formulation includes palm slag, stearic acid, expanded polystyrene (EPS), and titanium dioxide (TiO2), with the coating applied to metal substrates. The superhydrophobic properties were assessed through water contact angle measurements, achieving a high degree of water repellence. Surface roughness was analysed using a 3D profilometer, revealing hierarchical nanostructures that contribute to the coating’s hydrophobicity. The optimized formulation demonstrated effective corrosion protection, making it suitable for various industrial applications. The use of factorial experimental design (FED) proved highly effective in identifying optimal levels for the coating components, enhancing its performance. This research offers valuable comprehension into the formulation and characterization of superhydrophobic coatings, with significant implications for their use in diverse environments.