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US 6,638,639 B1Granted
Turbine components comprising thin skins bonded to superalloy substrates
AssigneeSiemens Westinghouse Power Corporation
InventorsMichael A. Burke, Paula D. Freyer, Mohan A. Hebbar, Brij B. Seth, Gary W. Swartzbeck, Thomas Walter Zagar
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Abstract
High efficiency, thin-walled turbine components such as turbine blade airfoils comprise a superalloy substrate covered by a thin skin. The thin skin may be bonded to the inner spar structure of a turbine blade airfoil by a transient liquid phase bonding process. The inner spar preferably comprises a cast single crystal nickel base superalloy. The thin skin may comprise a single crystal or polycrystalline nickel base superalloy or the like.
Claims7
A land base gas turbine component comprising:
- a superalloy substrate having a plurality of extensions on the surface thereof;
- a thin skin comprising a single crystal material bonded to the extensions of the substrate;
- and
- a plurality of cooling channels located between the superalloy substrate and further defined by the area between the plurality of extensions.
1 more element
Dependencies are inferred from the claim text.