Copper and subsequent nickel electrodeposition on magnesium alloys long used to protect magnesium alloys against corrosion has become untenable because attempts to recycle such alloys by melting results in Cu and Ni contamination that degrades corrosion resistance.
The alternative electrodeposition we propose involves Zn immersion plating, Zn electroplating from a pyrophosphate bath (1A/dm², 20 minutes at 50°C), and Sn electroplating from a stannate bath (1.5A/dm², 20 minutes at 60°C).