High-temperature resistant gas turbine component

A high-temperature resistant component for a gas turbine hot part and so on is provided, which has durability and reliability enough to withstand a corrosive environment with use of the low-grade oil. The high-temperature resistant component includes an alloy substrate (10) containing Ni, Co, or Fe...

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Bibliographische Detailangaben
Hauptverfasser:	Ichikawa, Kunihiro, Mebata, Akira, Arikawa, Hideyuki, Kojima, Yoshitaka, Haruyama, Hiroshi
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:	A high-temperature resistant component for a gas turbine hot part and so on is provided, which has durability and reliability enough to withstand a corrosive environment with use of the low-grade oil. The high-temperature resistant component includes an alloy substrate (10) containing Ni, Co, or Fe as the principal component, and a thermal barrier coating formed over the surface of the substrate (10) via a bond coat. The thermal barrier coating includes a porous thermal-barrier layer (12) made of ceramic and an environmental barrier layer (13) with corrosion resistance. An impregnated layer (14) is provided between the environmental barrier layer (13) and the thermal barrier layer (12). In the impregnated layer (14), the thermal barrier layer (12) is impregnated with a part of the environmental barrier layer (13). The thermal barrier layer (12) is made of a porous zirconia layer, and the environmental barrier layer (13) includes silica as the principal component. The porous zirconia layer has pores (16) impregnated with the part of the environmental barrier layer (13). As a result, the high-temperature resistant component has excellent corrosion resistance and excellent heat resistance.