Effects of CeO2 geometry on corrosion resistance of epoxy coatings

• Published in: Surface engineering Vol. 36; no. 2; pp. 175 - 183
• Main Authors: Zhang, Wenbo, Wang, Huaiyuan, Lv, Chongjiang, Chen, Xixi, Zhao, Zhiqiang, Qu, Yongquan, Zhu, Yanji
• Format: Journal Article
• Language: English
• Published: London, England Taylor & Francis 01.02.2020; SAGE Publications
• Subjects: CeO; corrosion resistance; electrochemical impedance spectroscopy; Epoxy composite coating; nanoparticles geometry; Epoxy composite coating; CeO2 nanoparticles geometry; electrochemical impedance spectroscopy; corrosion resistance
• ISSN: 0267-0844; 1743-2944
• DOI: 10.1080/02670844.2019.1639321

Effects of CeO 2 geometry, including functionalised CeO 2 nanospheres (FCNS) and nanorods (FCNS), on corrosion resistance of organic silicon epoxy (EP) composite coatings were investigated. The CeO 2 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 CeO 2 nanoparticles improved the corrosion resistance of EP coatings, and the optimum dosage was 3 wt-%. FCNR outperformed FCNS in enhancing corrosion resistance.