AEROSPACE COMPONENTS HAVING PROTECTIVE COATINGS AND METHODS FOR PREPARING THE SAME

Embodiments of the present disclosure generally relate to protective coatings on aerospace components and methods for depositing the protective coatings. In one or more embodiments, an aerospace component containing a protective coating is provided and contains a superalloy substrate and a bond coat...

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Bibliographische Detailangaben
Hauptverfasser:	CHATTERJEE, Sukti, SCUDDER, Lance A, BRITZ, David Alexander
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING 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 ENGINE PLANTS IN GENERAL HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION WEAPONS
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Beschreibung
Zusammenfassung:	Embodiments of the present disclosure generally relate to protective coatings on aerospace components and methods for depositing the protective coatings. In one or more embodiments, an aerospace component containing a protective coating is provided and contains a superalloy substrate and a bond coating disposed on the superalloy substrate. The protective coating also contains a thermal barrier coating containing yttria-stabilized zirconia disposed on the bond coating, an oxide coating disposed on the thermal barrier coating, and an optional capping layer disposed on the oxide coating. The oxide coating contains a film stack containing two or more pairs of a first film and a second film, where the first film contains a first metal oxide and the second film contains a second metal oxide, and the first metal oxide has a different composition than the second metal oxide. The capping layer contains aluminum oxide, calcium oxide, magnesium oxide, or any combination thereof.