Corrosion Resistance of Graphene-Reinforced Waterborne Epoxy Coatings
2015; Elsevier BV; Volume: 32; Issue: 5 Linguagem: Inglês
10.1016/j.jmst.2015.12.017
ISSN1941-1162
AutoresShuan Liu, Lin Gu, Haichao Zhao, Jianmin Chen, Haibin Yu,
Tópico(s)Advanced Sensor and Energy Harvesting Materials
ResumoGraphene (G) was dispersed uniformly in water and used as an inhibitor in waterborne epoxy coatings. The effect of dispersed G on anticorrosion performance of epoxy coatings was evaluated. The composite coatings displayed outstanding barrier properties against H2O molecule compared to the neat epoxy coating. Open circuit potential (OCP), Tafel and electrochemical impedance spectroscopy (EIS) analysis confirmed that the corrosion rate exhibited by composite coatings with 0.5 wt% G was an order of magnitude lower than that of neat epoxy coating. Salt spray test results revealed superior corrosion resistance offered by the composite coating.
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