In-depth analysis of corrosion-resistance and dynamic stability of superhydrophobic copper developed by a green approach

Abstract

This study gives a systematic analysis of corrosion resistant behaviour of superhydrophobic copper fabricated by two-step (electrodeposition followed by coating) and one-step (coating without electrodeposition) processes using behenic acid. Wetting and corrosion characteristics of coated copper have been continuously evaluated by abrasion with sand paper, immersion in acidic and alkaline solutions, and heating at elevated temperature. Although, wetting properties of coating have been obviously decreased with continuous abrasion, contact with acidic and alkaline ambiance, and hot temperature exposure, but corrosion properties of coated copper have not shown the similar trends which has been discussed through polarisation tests and EIS study in detail. Additionally aforesaid both processes generate durable superhydrophobic copper surface with excellent corrosion-resistant and anti-wetting characteristics; however, a two-step process is proved more efficient than the one-step process and promises to produce anti-wetting coatings for real-world applications.