Abstract
In order to improve the corrosion resistance of Mg–Li–Al–Ce alloy. A new two-step surface treatment, combining fluoride pretreatment in hydrofluoric acid (HF) solution and anodic electrophoresis in waterborne acrylic resin solution, is developed for Mg–Li–Al–Ce alloy. The results of scanning electron microscopy with energy dispersion spectroscopy show that a 6μm thick fluoride film is formed on the Mg–Li–Al–Ce alloy. A compact, uniform and 56μm thick waterborne acrylic resin coating is formed on the fluoride-coated alloy. The results of electrochemical measurements show that the double-layer coating improves the corrosion resistance of Mg–Li–Al–Ce alloy.
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