Abstract
Purpose – The purpose of this paper is to investigate the electrical conductivity and corrosion protection properties of a conductive coating composed of epoxy resin and carbon black in a sodium chloride (NaCl) solution.Design/methodology/approach – The conductive coating was prepared by combining epoxy resin, hardener, and carbon black. The electrical conductivity of the paint was studied with a DC current‐voltage meter and field emission scanning electron microscopy. The corrosion protection properties of the paint were characterized by open circuit potential measurements and electrochemical impedance spectroscopy.Findings – The highest conductivity observed was 4.23×10−4 Scm−1 for the coating containing 20 wt% carbon black. The coating protected mild steel in a 3.0 percent NaCl solution for up to five days.Originality/value – The results shown in this paper provide an insight into conductive paint and corrosion protection for future industrial applications and development.
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