Improving the Processability of a One-Step Hydrophobic Coating for Hot-Dipped Galvanised Steel for Industrial Applications

Hydrophobicity on steel-based metallic surfaces provides an advantage in limiting corrosion and debris buildup the surface, thereby, improving substrate performance. An experimental investigation was conducted development of zinc stearate silicon dioxide coatings surface hot-dipped galvanised zinc-coated steel substrates, which could be used to induce superhydrophobicity. Under optimal formulation processing conditions, a contact angle 146° produced within 120-min window. This represents reduction time 67% over previous literature using similar chemistry. In addition, we proved that costly nano can replaced by lower cost micro without decreasing performance coating angle. standard accelerated exposure tests, shown reduce oxide build up factor 3 compared uncoated galvanized steel.