Role of Alloyed Sc on the Corrosion Behavior of Mg.

The role of alloyed Sc on the corrosion behavior of Mg was revealed using an understanding of the anodic and cathodic kinetics derived from experimental measurements and DFT calculations. After T4 solution treatment, the Mg–Sc alloy exhibited higher corrosion resistance than high pure Mg. The scandium oxide-rich surface layers formed on the T4 Mg–Sc alloy seemed to suppress anodic dissolution by being protective, and the addition of Sc could inhibit cathodic hydrogen evolution. [ABSTRACT FROM AUTHOR]