Electrodeposition of aluminum on magnesium alloy in aluminum chloride (AlCl3)-1-ethyl-3-methylimidazolium chloride (EMIC) ionic liquid and its corrosion behavior

Jeng-Kuei Chang*, Su Yau Chen, Wen Ta Tsai, Ming Jay Deng, I. Wen Sun

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

142 Scopus citations

Abstract

A dense and adhesive Al layer was successfully electrodeposited on a Mg alloy in aluminum chloride-1-ethyl-3-methylimidazolium chloride ionic liquid. The corrosion resistance of the uncoated and Al-coated samples was evaluated by electrochemical impedance spectroscopy and potentiodynamic polarization measurements in 3.5 wt% NaCl solution. It was confirmed that the protective Al layer significantly reduces the corrosion rate of the Mg alloy. However, the deposition potential was a crucial factor that governed the structure and therefore the protection capability of the Al layer.

Original languageEnglish
Pages (from-to)1602-1606
Number of pages5
JournalElectrochemistry Communications
Volume9
Issue number7
DOIs
StatePublished - 1 Jul 2007

Keywords

  • Al-coating
  • Corrosion
  • Electrodeposition
  • Ionic liquid
  • Magnesium alloy

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