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Abstract

Anticorrosion properties of waterborne epoxy coatings with three structured nano-particles of TiO₂ were investigated and compared. The surface morphology and structure of TiO₂ have been analysed by XRD, SEM and N₂ adsorption–desorption. Corrosion performance of the nano-composite coating was investigated employing electrochemical impedance spectroscopy and salt spray test. Coatings with mesoporous TiO₂ (meso-TiO₂) possessed the best corrosion performance among the coating specimens. The EIS results show that the resistance value of coating with meso-TiO₂ was above 5.4 × 10⁸ Ω cm² which was higher than the other nano-composite coatings. Possible strong interactions between polymeric matrix and meso-TiO₂ caused high barrier properties.

Keywords

Corrosion Nano-composite Waterborne epoxy (EP)EIS

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Effect of different structured TiO 2 particle on anticorrosion properties of waterborne epoxy coatings

Abstract

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