Effect of cerium acetate doping on corrosion behavior of sol-gel coatings on 2A12 aluminum alloy

  • Chunjuan Fu*
  • , Yuxing Liu
  • , Mei Yu
  • , Jianhua Liu
  • , Songmei Li
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Si-Zr hybrid sol-gel coatings on 2A12 aluminum substrate were prepared, and the effect of cerium acetate (Ce(CH3COO)3) doping on corrosion behavior of the sol-gel coatings was examined. The scanning electron microscopy (SEM) was employed to investigate the morphology of the coatings, and the corrosion resistance of the coatings was evaluated by electrochemical methods and neutral salt spray tests. In addition, the structure and the inhibition mechanism of Ce(CH3COO)3 doped sol-gel coatings were discussed by Fourier transform infrared (FTIR) analysis. It is indicated that proper doping concentration of Ce(CH3COO)3 can effectively improve the corrosion resistance of the sol-gel coatings, while the higher concentration of Ce(CH3COO)3 would reduce the homogeneity and stability of the coatings, and further destroy the corrosion protection properties of the coatings.

Original languageEnglish
Pages (from-to)2014-2025
Number of pages12
JournalInternational Journal of Electrochemical Science
Volume10
Issue number3
DOIs
StatePublished - 2015

Keywords

  • Ce(CHCOO) doping
  • Coatings
  • Corrosion protection
  • Sol-gel

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