Turbine component with a thin interior partition
A hollow turbine airfoil or a hollow turbine casting including a cooling passage partition. The cooling passage partition is formed from a single crystal grain structure nickel based super alloy, a cobalt based super alloy, a nickel-aluminum based alloy, or a coated refractory metal.
1. A hollow turbine airfoil comprising a cooling passage partition comprising a cast sheet of a single crystal grain structure nickel based super alloy, the cast sheet of the single crystal grain structure nickel based super alloy having a single crystal grain structure direction parallel to a direction of solidification of the cast sheet of the single crystal grain structure nickel based super alloy;
wherein the cooling passage partition is formed separately from the hollow turbine airfoil, has a maximum thickness of less than or equal to 8 mils (0.2 millimeters) and has bleed holes, a sinusoidal shape, raised features and holes, a helical configuration, or a combination thereof.
2. The hollow turbine airfoil of claim 1 , wherein the cooling passage partition comprises bleed holes.
3. The hollow turbine airfoil of claim 1 , wherein the cooling passage partition has a sinusoidal shape.
4. The hollow turbine airfoil of claim 1 , wherein the cooling passage partition has raised features and holes.
5. The hollow turbine airfoil of claim 1 , wherein the cooling passage partition has a helical configuration.
6. The hollow turbine airfoil of claim 1 , wherein the hollow turbine airfoil is a vane or blade.
7. The hollow turbine airfoil of claim 1 , wherein the hollow turbine airfoil comprises a monolithic ceramic airfoil.
8. The hollow turbine airfoil of claim 1 , wherein the hollow turbine airfoil comprises a ceramic matrix composite airfoil.
9. A hollow turbine casting comprising a cooling passage partition comprising a cast sheet of a single crystal grain structure nickel based super alloy, the cast sheet of the single crystal grain structure nickel based super alloy having a single crystal grain structure direction parallel to a direction of solidification of the cast sheet of the single crystal grain structure nickel based super alloy;
wherein the cooling passage partition is formed separately from the hollow turbine casting, has a maximum thickness of less than or equal to 8 mils (0.2 millimeters), and has bleed holes, a sinusoidal shape, or a combination thereof.
10. The hollow turbine casting of claim 9 , wherein the cooling passage partition comprises bleed holes.
11. The hollow turbine casting of claim 9 , wherein the cooling passage partition has a sinusoidal shape.
12. The hollow turbine casting of claim 9 , wherein the hollow turbine casting is a vane or blade.