Self-Healing Engineered Multilayer Coatings for Corrosion Protection of Magnesium Alloy AZ31B.

ABSTRACT: Nonporous, crack-free hybrid glass coatings have provided excellent corrosion protection to the AZ31B magnesium alloy. However, if a crack develops in the coatings, then corrosion will proliferate at that point. The novelty of this study consists of engineering a bilayer protection system that combines the "barrier" properties of the hybrid glass coatings with the "inhibitor" or "self-healing" effect of an internal layer of mesoporous silica doped with cerium(III) ions. The mesoporous layer was obtained using a sol-gel solution with 1 mol % cerium(III) ions. The inner cerium-doped mesoporous coating has a thickness of 0.25 μm, and the electrochemical characterization through Open circuit potential (OCP) and Electrochemical Impedance Spectroscopy (EIS) indicates a corrosion inhibition proce

SUBMITTER: Aparicio M 

PROVIDER: S-EPMC11907293 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature