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US 12,503,776 B2Granted
Corrosion resistant coating systems
AssigneeThe Boeing Company
InventorsPatrick J. Kinlen, Anthony E. Dillard
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Abstract
Aspects described herein generally relate to a method of coating a metallic surface. The method includes forming a solution including a corrosion inhibitor having one or more thiol moieties and a hydroxide. The metallic surface is coated with the solution to form a treated metallic surface. The treated metallic surface is further coated with an organosilane, an acid, and a metal alkoxide to form a coating system.
Claims17
A method of coating a metallic surface, comprising:
- dispersing, using a high-shear mixer, a corrosion inhibitor having one or more thiol moieties in an aqueous solution;
- subsequently forming a salt of the corrosion inhibitor in the aqueous solution by mixing the aqueous solution with a hydroxide with a molar ratio to the corrosion inhibitor of 0.5:1 to about 4:1 until the thiol moieties are depronated and a weight of the hydroxide remains less than 10 percent of a weight of the aqueous solution;
- dissolving the salt until the aqueous solution becomes a solution free of insoluble particles;
- subsequently coating the metallic surface with the solution free of insoluble particles, an acid, and a metal alkoxide to form a treated metallic surface;
- partially curing, on the metallic surface, the solution free of insoluble particles;
- and
- subsequently coating the treated metallic surface with a coating comprising an organosilane to form a coating system.
4 more elements
Dependencies are inferred from the claim text.