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Anticorrosion properties of waterborne epoxy coatings with three structured nano-particles of TiO 2 were investigated and compared. The surface morphology and structure of TiO 2 have been analysed by XRD, SEM and N 2 adsorption-desorption. Corrosion performance of the nanocomposite coating was investigated employing electrochemical impedance spectroscopy and salt spray test. Coatings with mesoporous TiO 2 (meso-TiO 2 ) possessed the best corrosion performance among the coating specimens. The EIS results show that the resistance value of coating with meso-TiO 2 was above 5.4 × 10 8 Ω cm 2 which was higher than the other nanocomposite coatings. Possible strong interactions between polymeric matrix and meso-TiO 2 caused high barrier properties.

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