Corrosion protection of some Cu-based alloys by polyacrylate-alumina nanocomposite coatings

Abstract

Purpose The purpose of this study was to investigate the polyacrylic polymer/Al2O3 as a new nanocomposite coating to protect brass and Al-bronze in 3.5% NaCl and the role of alumina formulation on their protection efficiency Design/methodology/approach The corrosion efficiency of the nanocomposite coating (NCC) was evaluated by open circuit potential and electrochemical impedance spectroscopy (EIS). Findings The protection efficiency was more in the case of Al-bronze even for the same formulation of alumina NCC indicated the Cu substrate contribution. The Cu oxides in alloys and Al2O3 from the NCC and Al-bronze were responsible for this protection. Originality/value All the techniques supported each other, the presence of alumina was responsible for the corrosion protection efficiency.

Effect of high-temperature mechanochemistry method modified TiO2 on the dispersibility and corrosion resistance of TiO2-epoxy coatings

“…For example, they cost more, require some additional equipment or hookups and were prone to wear and tear. Under conditions that require good protection, excellent durability and low cost at the same time, organic paints make a very good option (Xu et al , 2022; Tan et al , 2021; Yang et al , 2021; Attia et al , 2022). Currently, organic coatings commonly used in the corrosion prevention field are phenolic resin coatings, polyurethane coatings and epoxy resin coatings (Sari et al , 2020; Lin et al , 2021a, 2021b; Gu et al , 2018; Zhang et al , 2020; Li et al , 2022).…”