Corrosion Behavior and Mechanical Properties of a Nanocomposite Superhydrophobic Coating

Abstract

In this work, a mechanically durable anticorrosion superhydrophobic coating is developed using a nanocomposite coating solution composed of silica nanoparticles and epoxy resin. The nanocomposite coating developed was tested for its superhydrophobic behavior using goniometry; surface morphology using scanning electron microscopy and atomic force microscopy; elemental composition using energy dispersive X-ray spectroscopy; corrosion resistance using atomic force microscopy; and potentiodynamic polarization measurements. The nanocomposite coating possesses hierarchical micro/nanostructures, according to the scanning electron microscopy images, and the presence of such structures was further confirmed by the atomic force microscopy images. The developed nanocomposite coating was found to be highly superhydrophobic as well as corrosion resistant, according to the results from static contact angle measurement and potentiodynamic polarization measurement, respectively. The abrasion resistance and mechanical durability of the nanocomposite coating were studied by abrasion tests, and the mechanical properties such as reduced modulus and Berkovich hardness were evaluated with the aid of nanoindentation tests.

Preparation of Transparent Sandwich-like Superhydrophobic Coating on Glass with High Stability and Self-Cleaning Properties

“…Finally, in order to maintain the superhydrophobic micro/nanostructure body durability and stability, it is necessary to construct a protective layer coated on the superhydrophobic surface [25]. Sprayed the UV gel ethanol dispersant on the superhydrophobic layer then exposed the sample to ultraviolet irradiation for 1 h and solidification.…”

Mechanically Durable and Fluorine‐Free Ni–Cr Alloy‐Based Highly Hard Superhydrophobic Coating on Al Alloy

“…Recent efforts have demonstrated the development of durable superhydrophobic coatings through the incorporation of materials such as silica nanoparticles, epoxy resin, fluoropolymers, and other components. [17][18][19][20][21] While these innovations show promise, there remains a need to explore highly hard superhydrophobic coatings that can withstand mechanical stresses and provide superior durability.…”

Heat Stability and Icing Delay on Superhydrophobic Coatings in Facile One Step

“…A superhydrophobic coating is characterized by a water contact angle (WCA) over 150° and a sliding angle (SA) lower than 10° [ 5 ]. Superhydrophobic surfaces are widely used in exterior wall coatings [ 6 ], textiles [ 7 , 8 ], metal corrosion protection [ 9 , 10 ], anti-bacterial [ 11 , 12 ], anti-fogging, and self-cleaning [ 13 , 14 , 15 ]. Especially in the field of icephobic coating in harsh outdoor environments, superhydrophobic technology has a wide range of applications [ 16 , 17 ].…”