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AssigneeGeneral Electric Company
InventorsJeffrey A. Conner, Joseph D. Rigney, David J. Wortman, Janet E. Gaewsky
Estimating the term…
A method for restoring or enhancing an environmental resistant coating of a coating total thickness within a coating design thickness range on a metal substrate of an article includes the application of a restoring or enhancing metal to at least one discrete local surface area. Then at least the discrete local surface area is coated with an environmental resistant coating. For use of the method to restore a coating on an article which has experienced service operation and the discrete surface area includes an undesirable amount of oxidation/corrosion products, the oxidation/corrosion products first are removed from an outer portion of the coating while retaining a coating present at the discrete surface areas and retaining the entire coating on surface areas adjacent the discrete surface areas. Then the restoration metal is applied. For use of the method to enhance an existing coating, at least one discrete surface area is selected based on an oxidation/corrosion attack pattern identified from similar articles which experienced service operation in apparatus of a design for which the article is intended. Then the enhancing metal is applied to the selected area.
A method for restoring an environmental resistant coating of a coating total thickness within a coating design thickness range on a metal substrate of an article which has experienced service operation, the coating having an outer portion and an inner portion diffused with the metal substrate, the outer portion having at least one discrete local surface area on which are an undesirable amount of oxidation/corrosion products resulting from exposure to service operation, comprising the steps of:
A method for enhancing an existing environmental resistant coating on a metal substrate of an article, comprising the steps of:
Dependencies are inferred from the claim text.