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Nanocomposite conformal corrosion barrier coating

United States Patent

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December 11, 2018
View the Complete Patent at the US Patent & Trademark Office
Nanocomposite Anti-Corrosion Coating
Metals across all industries demand anti-corrosion surface treatments and drive a continual need for high-performing and low-cost coatings. Ordered thin films comprising aligned inorganic platelets dispersed in a polyelectrolyte polymer matrix provide a new class of transparent conformal barrier coatings for protection in corrosive atmospheres. For example, films assembled via layer-by-layer deposition, as thin as 90 nm, are shown to reduce copper corrosion rates by >1000.times. in an aggressive H.sub.2S atmosphere. These coatings can provide high-performing anti-corrosion treatment alternatives to costlier, more toxic, and less scalable thin films, such as graphene, hexavalent chromium, or atomic layer deposited metal oxides.
June 14, 2018
C09D 5/08 (20060101); C09D 139/02 (20060101); C09D 179/02 (20060101); C09D 133/02 (20060101); H01L 31/048 (20140101);
STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.