Component with film cooling holes

The layer system has a corrosion and oxidation protective layer (7) that is arranged on a substrate. A film-cooling hole is formed in the substrate, and an outlet opening (13) is formed in the corrosion and oxidation protective layer. A recessed portion (70) is formed downstream of outlet opening in...

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Bibliographische Detailangaben
Hauptverfasser:	MENKE, CHRISTIAN, AHMAD, FATHI
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:	The layer system has a corrosion and oxidation protective layer (7) that is arranged on a substrate. A film-cooling hole is formed in the substrate, and an outlet opening (13) is formed in the corrosion and oxidation protective layer. A recessed portion (70) is formed downstream of outlet opening in the flow direction (37). The extent of the recessed portion in the direction of flow is twice as large as the extension of the outlet opening in the flow direction. The layer thickness of the corrosion and oxidation protective layer is reduced around 50%, 70% or 90%. Durch die Reduzierung der Wärmedämmschicht im Ausströmbereich (7) aus einem Diffusor (13) werden die ansonsten vorhandenen thermischen Spannungen deutlich reduziert und die Lebensdauer erhöht.