Investigation of corrosion protection performance of epoxy coatings modified by ZnO-Cr2O3 nanocomposites on mild steel surfaces

Document Type : Original Article

Authors

1 university of kashan

2 Department of Analytical Chemistry, Faculty of Chemistry, University Of Kashan , I.R. Iran.

Abstract

In this study, ZnO-Cr2O3/epoxy nanocomposites are employed to protect mild steel corrosion in 3.5% NaCl solution. The corrosion performances of the nanocomposites coatings were evaluated by using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements. Electrochemical measurements show that ZnO-Cr2O3 nanocomposite coated has good inhibitive properties with PE% of ~99% at 0.04 gr/L concentration on mild steel corrosion in 3.5% NaCl solution. The results indicated that the incorporation of ZnO-Cr2O3 nanoparticle into epoxy resin coating significantly decrease the corrosion current as well as the hardness of epoxy coatings. ZnO-Cr2O3 nanoparticle are able to cure the defect in epoxy resin and prevent the diffusion of corrosive electrolyte to mild steel substrate.

Keywords

Main Subjects

References

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Applied Chemistry Today
Volume 13, Issue 49
December 2018
Pages 45-52

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