Electrical conductivity and corrosion protection properties of conductive paint coatings
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.
Keywords
Citation
Masri, M.N., Yunus, Z.M., Warikh, A.R.M. and Mohamad, A.A. (2010), "Electrical conductivity and corrosion protection properties of conductive paint coatings", Anti-Corrosion Methods and Materials, Vol. 57 No. 4, pp. 204-208. https://doi.org/10.1108/00035591011058219
Publisher
:Emerald Group Publishing Limited
Copyright © 2010, Emerald Group Publishing Limited