Phys.org January 5, 2022
Improving the corrosion resistance of steel by coating it with aluminum for marine applications is limited because of chloride ions in sea water on aluminum. Researchers in South Korea fabricated alloy films with excellent corrosion resistance by depositing an Mg film on Al-Si coated steel sheets and applying heat treatment. The fabricated Al-Mg-Si alloy film formed a corrosion product film composed of two layers, showing an excellent barrier effect against corrosion factors. The Mg in the film fabricated by heat treatment for 5 min was widely distributed in a dissolved state on the AI phase and was continuously involved in the corrosion product formation reaction. The corrosion resistance evaluation results were explained by analyzing the properties of the alloy film and the mechanism of forming corrosion products…read more. Open Access TECHNICAL ARTICLE
Schematic diagram of the specimens before and after heat treatment. Credit: Corrosion Science, Volume 192, November 2021, 109829Â