A Comparative Study of Neat Epoxy Coating and NanoZrO₂/Epoxy Coating for Corrosion Protection on Carbon Steel

Abstract:

nanoZrO₂ was modified by styrene coupling grafting method and then used as an additive to improve the protective performance of epoxy coating. Two kinds of coatings, neat epoxy coating and nanoZrO₂/epoxy coating, were prepared and applied on Q235 carbon steel plates. The plates were submitted to salt spray chamber and seawater immersion for 1000 hours to evaluate the corrosion protection performance for these two kinds of coatings. Tafel polarization curves and electrochemical impedance spectroscopy (EIS) were determined to analyze the corrosion behavior of coating/metal system. Scanning electron microscopy (SEM) and photographs were carried out for morphology analysis of two kinds of coatings under different conditions. Results showed a superior stability and efficient corrosion protection by nanoZrO₂ /epoxy coating. The modified nanoZrO₂ could inhibit the penetration of corrosive media and then improve the corrosion protection of the epoxy coating on carbon steel.

• Periodical: Applied Mechanics and Materials (Volumes 599-601)
• Pages: 3-6
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.599-601.3
• Online since: August 2014
• Authors: Xia Zhao*, Shuan Liu, Bao Rong Hou
• Keywords: Additive, Carbon Steel, Corrosion Behavior, Epoxy Coating, Nano ZrO₂

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