Nonfluorinated, robust and anti-corrosive polydimethylsiloxane/OTMS functionalized-SiO2 superhydrophobic coating on inconel alloy

Abstract

Here, we present a superhydrophobic surface with enhanced corrosion protection prepared using a spin coating method on an IN617 substrate. It comprises a micro-nanostructured polydimethylsiloxane/octyltrimethoxysilane modified silicon dioxide coating. The composite coating exhibits excellent water repellency (WCA 152° ± 1.2°), mechanical robustness, thermal resistance (50–200 °C), chemical stability (pH 1–9), and improved anti-corrosion.