Anti-corrosion material and application method
AssigneeGeneral Electric Company
InventorsRachel Marie Gettings, Dominique T. Everett, Bernard P. Bewlay
Life of this patent
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Abstract
Methods for repairing the conventional physical barrier coating barrier on a component having a damaged portion. Applying a coating on the outer surface of the damaged portion of the component. The coating containing a reactive oxide. Initiating a reaction between the coating and the molten sulfates within the outer surface of the component. The reaction catalytically decomposes molten sulfates at the outer surface of the damaged portion of the component.
Claims17
A method for corrosion mitigation on a metallic alloy component having thereon a corrosion-protective paint including an active ingredient and having at least one corrosion-damaged portion, the method comprising:
- applying an anti-corrosion coating directly onto and in contact with a corroded surface of the at least one corrosion-damaged portion of the metallic alloy component, the anti-corrosion coating comprising a reactive rare-earth-doped oxide that is not the active ingredient of the corrosion-protective paint, wherein the reactive rare-earth-doped oxide is gadolinium doped ceria;
- and
- initiating a reaction between the anti-corrosion coating and molten sulfates comprising sulfur containing compounds and aerosols on the corroded surface of the at least one corrosion-damaged portion of the metallic alloy component, the reaction catalytically decomposing the molten sulfates on the corroded surface of the at least one corrosion-damaged portion of the metallic alloy component.
A method for corrosion mitigation on a metallic alloy component having thereon a physical barrier coating including an active ingredient and having at least one corrosion-damaged portion lacking the physical barrier coating thereon, the method comprising:
- applying an anti-corrosion coating onto a corroded surface of the at least one corrosion damaged portion of the metallic alloy component lacking the physical barrier coating thereon, the anti-corrosion coating comprising a reactive rare-earth-doped-oxide that is not the active ingredient of the physical barrier coating, wherein the reactive rare-earth-doped-oxide is gadolinium doped ceria;
- and
- initiating a reaction between the anti-corrosion coating and molten sulfates comprising sulfur containing compounds and aerosols on the corroded surface of the at least one corrosion- damaged portion of the metallic alloy component lacking the physical barrier coating thereon, the reaction catalytically decomposing the molten sulfates on the corroded surface of the at least one corrosion-damaged portion of the metallic alloy component.
Dependencies are inferred from the claim text.