Enhancing corrosion resistance in Mg‒based alloys through MOF‒incorporated coatings: A comprehensive review

Abstract

Mg-based alloys are used in various industrial sectors due to the unique combination of mechanical and biomedical behaviors. However, they are challenging in terms of corrosion protection and do not produce a protective oxide layer on their surface. The unregulated corrosion rate of these alloys restricts their application. One of the strategies that can provide a protective coating that prevents the direct contact of corrosive media with the substrates is coating on magnesium and its alloys. In recent years, MOF‒MOF-containing coatings have been investigated as a means of protecting various metal alloys against corrosion. The results show that these inhibitors have significantly reduced the rate of metal dissolution by affecting the kinetics of electrochemical reactions and greatly increasing corrosion resistance. So, these coatings are useful for increasing the corrosion resistance of magnesium alloys. Also, the anti-corrosion mechanisms and performance of MOFs in the coating matrix are discussed accordingly. This review article attempts to highlight the importance of MOFs for coating applications and enhancing corrosion resistance.