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Polyaniline/Epoxy Coatings with Good Anti-Corrosion Properties

A. Tale, P. Passiniemib

1997enpolyanilinecoatingscorrosionprotectionepoxy

Abstract

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We have studied polyaniline/epoxy blend coatings on mild steel in 0.6 M NaCl and 0.1 M HCI aqueous solutions with electrochemical methods. The corrosion protective performance was characterized by a permanent shift of corrosion potential by about 500 mV to the noble direction and by a decrease of five orders of magnitude in the redox current. The surface of mild steel was covered by a light gray protective layer due to the electrochemical interaction between the coating and steel. The chemical composition of the surface layer has been studied with X-ray photoelectron spectroscopy (XPS). Our findings suggest that the polyaniline/epoxy coatings with a low PAni content exhibit effective corrosion protective features, reinforcing their potential for practical applications in anti-corrosion strategies. Surface analysis by XPS indicated that the steel surface was covered with iron oxide, fluoride, and possibly also with iron hydroxide and some organo-iron compound after the electrochemical experiments.

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Cite This Work

@article{6091edd9-2bb5-4caf-bb07-50684040244d,
  title={Polyaniline/Epoxy Coatings with Good Anti-Corrosion Properties},
  author={A. Tale and P. Passiniemib},
  year={1997},
  language={en}
}
TY  - JOUR
TI  - Polyaniline/Epoxy Coatings with Good Anti-Corrosion Properties
AU  - A. Tale
AU  - P. Passiniemib
PY  - 1997
LA  - en
ER  -

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