Robust superhydrophobic coatings prepared by cathodic electrophoresis of hydrophobic silica nanoparticles with the cationic resin as the adhesive for corrosion protection

• DOI: 10.1016/j.corsci.2020.108797
• Publication Date: 2020-06-07T14:45:28Z
• Authors: Xue-Fen Zhang; Fan Jiang; Rui-Jiao Chen; Yi-Qing Chen; Ji-Ming Hu
• Keywords: Electrophoretic Deposition; Corrosion inhibitor

Abstract The practical application of superhydrophobic surfaces in corrosion protection often suffers from complicated fabrication processes, requirement for high-cost fluorosilane modification and poor mechanical durability. In order to address above mentioned drawbacks, in this work, robust protective superhydrophobic SiO2 coatings are fabricated on electrically conductive metal surfaces by a single one-step electrophoretic deposition (EPD) technique from EPD bath containing superhydrophobic SiO2 nanoparticles (SH-SiO2 NPs) and resin-based adhesive. The as-prepared superhydrophobic coatings exhibit good anti-corrosion performance in 3.5 wt.% NaCl solution. Furthermore, additional corrosion inhibition is achieved after incorporation of inhibitors into the above superhydrophobic coatings by deposition of inhibitor-loaded SH-SiO2 NPs.