Method for applying or repairing thermal barrier coatings

A method applying a thermal barrier coating (150) to a metal substrate (100), or for repairing a thermal barrier coating previously applied by physical vapor deposition to an underlying aluminide diffusion coating (106) that overlays the metal substrate (100). The aluminide diffusion coating (106) i...

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Bibliographische Detailangaben
Hauptverfasser:	TOMLINSON THOMAS JOHN, SCHORR DEBORAH ANNE, HEIDORN RAYMOND WILLIAM, KASTRUP DAVID ALLEN, NAGARAJ BANGALORE ASWATHA, YOUNG CRAIG DOUGLAS, LANMAN EVA ZIELONKA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	A method applying a thermal barrier coating (150) to a metal substrate (100), or for repairing a thermal barrier coating previously applied by physical vapor deposition to an underlying aluminide diffusion coating (106) that overlays the metal substrate (100). The aluminide diffusion coating (106) is treated to make it more receptive to adherence of a plasma spray-applied overlay alloy bond coat layer (142). An overlay alloy bond coat material is then plasma sprayed on the treated aluminide diffusion coating to form an overlay alloy bond coat layer (142). A ceramic thermal barrier coating material is plasma sprayed on the overlay alloy bond coat layer (142) to form the thermal barrier coating (150). In the repair embodiment of this method, the physical vapor deposition-applied thermal barrier coating is initially removed from the underlying aluminide diffusion coating (106).