Review—Fabrication of Nanostructured Corrosion-Resistant Superhydrophobic Coatings on Copper by Electrodeposition

Corrosion is an undesirable electrochemical reaction that leads to material degradation and affects material properties like ductility, malleability, conductivity, etc. The consequences of corrosion are machine failure, bridge failures, buildings collapse, and significant economic losses to GDP. Furthermore, corrosion can pose serious safety risks that result in casualties which makes minimizing the effect of corrosion a great challenge. Traditional solutions like inhibitors, design modification, and paints are available to prevent corrosion but have many limitations, such as cost, durability, stability issues, and general inefficiency. In this context, a nanostructured superhydrophobic coating (SH) is gaining attention due to its corrosion prevention efficiency and other broad industrial applications. The nano air pockets exhibit a high contact angle due to their unique combination of elevated surface roughness, distinctive nanostructure, and reduced surface energy. This reduces the surface area of contact between the corrosive substance and water droplet and the metal surface, leading to improved efficiency in resisting corrosion.In this paper, the recent electrodeposition to develop corrosion-resistant SH coatings on copper substrates and compression with other metals with their physical, chemical, and thermal stabilities are discussed.