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Epoxy nanocomposite coatings with enhanced dual active/barrier behavior containing graphene-based carbon hollow spheres as corrosion inhibitor nanoreservoirs

Haddadi, S. A ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1016/j.corsci.2021.109428
  3. Publisher: Elsevier Ltd , 2021
  4. Abstract:
  5. Graphene-based carbon hollow spheres (CHSs) fabrication, doped with 2-mercaptobenzimidazole (MBI) was successfully done in previous work. The active/barrier corrosion protection performance (CPP) of epoxy coatings was evaluated using salt spray test, electrochemical impedance spectroscopy (EIS), and scanning vibrating electrode technique (SVET). Results proved the active/barrier CPP enhancement of epoxy coatings in the presence of 3 wt. % MBI@CHSs. While the presence of MBI and empty CHSs in epoxy coatings did not further improve the active performance. An improvement in the adhesion loss of the epoxy coating, ca. 58 %, was observed in the presence of 3 wt. % MBI@CHSs. © 2021
  6. Keywords:
  7. Atmospheric corrosion ; Corrosion resistant coatings ; Electrochemical corrosion ; Electrochemical impedance spectroscopy ; Epoxy resins ; Graphene ; Seawater corrosion ; 2-mercapto-benzimidazole ; Active barrier ; Carbon hollow-spheres ; Corrosion protection performance ; Dual active/barrier ; Epoxy coatings ; Epoxy nanocomposites ; Inhibitor ; Nanoreservoirs ; Ph-triggered release ; Spheres
  8. Source: Corrosion Science ; Volume 185 , 2021 ; 0010938X (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0010938X21001943