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US 5,348,446 AGranted
Bimetallic turbine airfoil
AssigneeGeneral Electric Company
InventorsChing-Pang Lee, Anne M. Isburgh, Paul S. Wilson
Life of this patent
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Abstract
An airfoil for a gas turbine engine is constructed from a core body formed of a conventional nickel-based superalloy and leading and trailing edge components and squealer tip formed of a nickel aluminide alloy. The nickel aluminide components exhibit a high degree of thermal conductivity and efficiently transfer heat into the core body by direct conduction.
Claims11
An airfoil for a gas turbine engine, comprising:
- a core body formed of a nickel-based superalloy;
- a leading edge component formed of a nickel aluminide alloy;
- and
- a trailing edge component formed of a nickel aluminide alloy;
- wherein said leading edge component and said trailing edge component are fabricated separately and apart from said core body and from one another and wherein each of said leading edge and trailing edge components is subsequently bonded to said core body.
2 more elements
A bimetallic airfoil, comprising:
- a core body formed from a single crystal nickel-based superalloy casting;
- and
- a fabricated trailing edge component comprising a nickel aluminide alloy, said fabricated trailing edge component being fabricated separately and apart from said core body and subsequently mounted to said core body by a single crystal brazed joint.
A bimetallic airfoil, comprising:
- a core body formed from a single crystal nickel-based superalloy casting;
- and
- a fabricated leading edge component comprising a nickel aluminide alloy, said fabricated leading edge component being fabricated separately and apart from said core body and subsequently mounted to said core body by a single crystal brazed joint.
An airfoil for a gas turbine engine having a pressure side and a suction side, comprising:
- a core body formed of a nickel-based superalloy, which includes a trailing edge portion disposed on said suction side which defines a trailing edge tip;
- a leading edge component formed of a nickel aluminide alloy and bonded to said core body;
- and
- a trailing edge component formed of a nickel aluminide alloy and bonded to said trailing edge portion proximate to said tip and disposed on said pressure side.
1 more element
Dependencies are inferred from the claim text.