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AssigneeGeneral Electric Company
InventorsBangalore Aswatha Nagaraj, Eva Zielonka Lanman, Deborah Anne Schorr, Thomas John Tomlinson, Raymond William Heidorn, David Allen Kastrup, Craig Douglas Young
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A method applying a thermal barrier coating to a metal substrate, or for repairing a thermal barrier coating previously applied by physical vapor deposition to an underlying aluminide diffusion coating that overlays the metal substrate. The aluminide diffusion coating is treated to make it more receptive to adherence of a plasma spray-applied overlay alloy bond coat layer. An overlay alloy bond coat material is then plasma sprayed on the treated aluminide diffusion coating to form an overlay alloy bond coat layer. A ceramic thermal barrier coating material is plasma sprayed on the overlay alloy bond coat layer to form the thermal barrier coating. In the repair embodiment of this method, the physical vapor deposition-applied thermal barrier coating is initially removed from the underlying aluminide diffusion coating.
A method for repairing a thermal barrier coating applied by physical vapor deposition to an underlying aluminide diffusion coating that overlays a metal substrate of at least one part of an assembled turbine component, the method comprising the steps of:
Dependencies are inferred from the claim text.