Not simply repel water: the diversified nature of corrosion protection by superhydrophobic coatings

Pulsed Laser Induced Triple Layer Copper Oxide Structure for Durable Polyfunctionality of Superhydrophobic Coatings

“…At the same time, as discussed in our recent studies, the prolonged contact of a superhydrophobic coating with corrosive solutions may be accompanied by some degradation, associated with weak hydrolysis of SiOCu bonds in brine solutions and minor desorption of hydrophobic molecules. In general, such desorption results in degradation of the water repelling properties, the shift of surface charge toward more positive values and increase in the availability of surface sites for anion adsorption, thus leading to degradation of corrosion protection. The evolution of electrochemical parameters of OxyLT+H sample, measured in this study, indicates a minor effect of hydrophobic molecules desorption and the very high stability of anticorrosion properties.…”

“…Such complex oxide layer has been found to be useful in improving the corrosion resistance of copper in NaCl solutions, while the formation of a compact thick film of CuO on Cu surface prevents anodic corrosion . The superhydrophobic films on metal surfaces essentially inhibit the electrochemical corrosion processes due to several protection mechanisms, such as electrolyte repellency, suppression of adsorption of aggressive ions onto the surface, barrier effect of the modified textured surface layer, and specific charging of a hydrophobic surface in electrolytes . At the same time, for the majority of designed superhydrophobic coatings, a poor abrasive resistance restricts the practical application of these coatings.…”

Transition from superhydrophilic to superhydrophobic state of laser textured stainless steel surface and its effect on corrosion resistance

“…Such functionalized surfaces possess several unique beneficial properties, i.e. extreme water repellency [3] [4], self-healing [5], self-cleaning [6], reduced drag in laminar and turbulent flows [7] [8], enhanced heat transfer [9] [10] and improved corrosion resistance [11] [12][13] [14].…”

Superhydrophobic Coatings from Recyclable Materials for Protection in a Real Sea Environment

“…For the future, additional information regarding the aging of the coating itself and the stability of the air plastron is needed. Indeed, both these components determine anticorrosion performances with complex mechanisms touching different connected variables, such as homogeneous/heterogeneous wetting degree of the interface; blockage of cathodic/anodic sites; and diffusion of crucial reactants such as Cl − , O 2 , and H + [32][33][34], whose dependence on time enhancing biological pressure can be expected.…”