The study of the surface film formed on an ultra-lightweight Mg-Li(-Al-Y-Zr) alloy

The surface film formed on an ultra-lightweight Mg-Li(-Al-Y-Zr) alloy was comprehensively studied. Structure and elemental distribution of the surface film were characterised. Surface chemistry evolution was observed in-situ during immersion. The mechanisms that result in the high corrosion resistance of bcc Mg-Li alloys were discussed.