Effects of CeO₂ geometry on corrosion resistance of epoxy coatings

ABSTRACT

Effects of CeO₂ geometry, including functionalised CeO₂ nanospheres (FCNS) and nanorods (FCNS), on corrosion resistance of organic silicon epoxy (EP) composite coatings were investigated. The CeO₂ nanoparticles were functionalised with γ-(2,3-epoxypropoxy)propytrimethoxysilane and characterised by Fourier transform infrared spectroscopy. The corrosion resistance of EP composite coatings was evaluated by polarisation curve analysis, electrochemical impedance spectroscopy and salt spray test. It was found the incorporation with CeO₂ nanoparticles improved the corrosion resistance of EP coatings, and the optimum dosage was 3 wt-%. FCNR outperformed FCNS in enhancing corrosion resistance.

KEYWORDS:

• Epoxy composite coating
• CeO₂ nanoparticles geometry
• corrosion resistance
• electrochemical impedance spectroscopy

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The research is financially supported by the National Young Top Talents Plan of China [2013042], National Science Foundation of China [21676052, 21606042].