Self-generating construction of applicable corrosion-resistant surface structure of magnesium alloy

Abstract Magnesium alloys play a vital role in future development. However, the application of magnesium alloys with great potential is limited due to their strong corrosion sensitivity. In this work, the double-layer protective film of Mg-In alloy was constructed and adjusted by controlling the amount of indium (In) addition. The cross-section of the corrosion layer presents an inner In-rich layer accompanied by a compact outer layer of magnesium hydroxide with the distribution of Indium hydroxide alternating or interlayer, which significantly enhances the corrosion resistance of the Mg-In alloy and exhibits a self-generated function during the self-corrosion deposition process.