Abstract
To improve the corrosion resistance of Mg alloys, an Al layer was electrodeposited on the Mg surface from an ionic liquid of 1-ethyl-3-methylimidazolium chloride (EMIC) and aluminum chloride (AlCl3) at 283 K. A smooth surfaced Al electrodeposit can be electroplated in the AlCl3–EMIC ionic liquid by pulse electrolysis at 6.7 Hz and a duty ratio of 0.67. A denser and flatter Al layer was successfully electroplated on AZ121 substrate at the lower temperature of 283 K in an AlCl3–EMIC ionic liquid with 0.1 M ethylene glycol added.
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