Co-deposition of Al-Zn on AZ91D magnesium alloy in AlCl3-1-ethyl-3-methylimidazolium chloride ionic liquid

Szu Jung Pan, Wen Ta Tsai*, Jeng-Kuei Chang, I. Wen Sun

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

The co-deposition of Al and Zn on AZ91D magnesium alloy from a Lewis acidic aluminum chloride-1-ethyl-3-methylimidazolium chloride (AlCl3-EMIC, with a molar ratio of 60:40) ionic liquid containing 1 wt% ZnCl2 at room temperature was studied. The effect of potential on the deposition rate, the microstructure and the chemical composition of the deposit was explored. The experimental results show that the simultaneous deposition of Al and Zn on Mg alloy can be achieved under properly controlled potential conditions. The deposition rate increased while the amount of Zn existing in the coating decreased with increasing negative deposition potential. In the ionic liquid studied, a uniform chemical composition of the coating was obtained when the deposition was performed at -0.2 V (vs. Al).

Original languageEnglish
Pages (from-to)2158-2162
Number of pages5
JournalElectrochimica Acta
Volume55
Issue number6
DOIs
StatePublished - 15 Feb 2010

Keywords

  • Aluminum
  • Co-electrodeposition
  • Ionic liquid
  • Magnesium alloy
  • Zinc

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