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US 7,905,016 B2Granted
System for forming a gas cooled airfoil for use in a turbine engine
AssigneeSiemens Energy, Inc.
InventorsAllister W. James, Douglas J. Arrell
Life of this patent
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Abstract
A turbine airfoil system for forming a turbine airfoil that is usable in a turbine engine. The airfoil may be formed from a porous material shaped into an outer airfoil shape. The porous material may include an inner central spar capable of supporting the turbine airfoil an outer porous region and an outer coating. The porous material facilitates efficient cooling of the turbine airfoil.
Claims20
A method of forming a turbine airfoil usable in a turbine engine, comprising:
- forming a porous material into a shape of an airfoil including leading and trailing edges and pressure and suction sides;
- infiltrating an outer portion of the porous material with a stopper material, whereby a central, inner aspect of the porous material remains unfilled;
- infiltrating the central, inner aspect of the porous material with a metal powder;
- consolidating the metal powder;
- applying an outer coating to an outer surface of the airfoil;
- and
- removing the stopper material from the porous structure, thereby forming the airfoil shape with a central spar, a region of porous material surrounding the central spar and an outer coating.
4 more elements
A method of forming a turbine airfoil usable in a turbine engine, comprising:
- forming a porous material of a metal foam, formed from materials selected from a group consisting of a nickel base superalloy and FeCrAlY, into a shape of an airfoil including leading and trailing edges and pressure and suction sides;
- infiltrating an outer portion of the porous material with a stopper material, whereby a central, inner aspect of the porous material remains unfilled;
- infiltrating the central, inner aspect of the porous material with a metal powder;
- consolidating the metal powder;
- applying an outer coating to an outer surface of the airfoil;
- and
- removing the stopper material from the porous structure, thereby forming the airfoil shape with a central spar, a region of porous material surrounding the central spar and an outer coating.
4 more elements
Dependencies are inferred from the claim text.