Hybrid organic–inorganic multilayer coatings including nanocontainers for corrosion protection of metal alloys

The development of new technology that prevents corrosion of aluminium alloys (AA) 2024-T3 was made. AA 2024-T3 panels were coated with two layers the first one consists of conductive polymers (CP) and the second one, on the top, is made of sol–gel coatings. Ceramic nanocontainers loaded with corrosion inhibitors were incorporated into the CP coatings. Studies on the corrosion resistance of these coatings demonstrated that the presence of loaded nanocontainers into the CP coatings improved the corrosion protective properties of the films by increasing the total impedance values, and decreasing both anodic and cathodic currents relatively to coatings without nanocontainers.

► Ceramic nanocontainers loaded with corrosion inhibitor incorporated into coatings. ► Conductive polymer coatings including loaded nanocontainers applied to AA2024-T3. ► The coatings have improved corrosion protection properties.