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Synthesis Of Organic–Inorganic Hybrid Coatings For The Protection Of Aluminum Substrates

Author

Listed:
  • BING LEI

    (School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China)

  • GUOZHE MENG

    (School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China)

  • WEI LIU

    (School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China)

Abstract

A silica-based organic–inorganic hybrid coating has been developed for corrosion protection of aluminum substrates by dip-coating technique. The hybrid sols were prepared by hydrolysis and condensation of trimethoxy(7-octen-1-yl)silane (TMOS) and tetraethyl orthosilicate (TEOS) in the presence of acetic acid. Structural characterization of the hybrid coatings was performed using powder X-ray diffraction analysis (PXRD). The morphology of the coating has been studied by scanning electron microscope (SEM). Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) tests have been performed, and the results showed that the silane coatings had high corrosion resistance. The heat treatment of the coatings at various temperatures have been investigated, and the results show that 130∘C is an optimized temperature. The results expose that the hybrid coating enhanced the corrosion protection of aluminum in aqueous 3.5% NaCl solution.

Suggested Citation

  • Bing Lei & Guozhe Meng & Wei Liu, 2021. "Synthesis Of Organic–Inorganic Hybrid Coatings For The Protection Of Aluminum Substrates," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 28(05), pages 1-5, May.
    • Handle: RePEc:wsi:srlxxx:v:28:y:2021:i:05:n:s0218625x21500335
    DOI: 10.1142/S0218625X21500335
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