Article having thermal barrier coating

An article (20) includes a metallic substrate (24) and a tri-layer thermal barrier coating (22) that is deposited on the metallic substrate. The tri-layer thermal barrier coating includes an inner ceramic layer (28), an outermost ceramic layer (30) relative to the metallic substrate, and an intermed...

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Bibliographische Detailangaben
Hauptverfasser:	Neal, James W, Litton, David A, Zimmerman, Benjamin Joseph, Maloney, Michael J, Masucci, Christopher
Format:	Patent
Sprache:	eng ; fre ; ger
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:	An article (20) includes a metallic substrate (24) and a tri-layer thermal barrier coating (22) that is deposited on the metallic substrate. The tri-layer thermal barrier coating includes an inner ceramic layer (28), an outermost ceramic layer (30) relative to the metallic substrate, and an intermediate ceramic layer (32) between the inner ceramic layer and the outermost ceramic layer. The inner ceramic layer (28) and the outermost ceramic layer (30) are composed of respective first and second ceramic materials and the intermediate ceramic layers (32) composed of a third, different ceramic material. The inner ceramic layer has a first thickness (28a), the outermost ceramic layer has a second thickness (30a), and the intermediate ceramic layer has a third thickness (32a) that is greater than the first thickness and the second thickness.