Article, component, and method of forming an article

1. An impingement sleeve, comprising:

a body portion separating an inner region and an outer region;

an aperture in the body portion, the aperture fluidly connecting the inner region and the outer region; and

at least two baffles spanning the inner region and extending from a first portion of an inner surface of the impingement sleeve to a second portion of the inner surface;

wherein the impingement sleeve is arranged and disposed with a geometry that permits insertion within a hollow portion of a hot gas path component selected from the group consisting of a nozzle, a blade, and a vane of a gas turbine;

wherein at least one of the at least two baffles includes at least one opening extending therethrough; and

wherein the impingement sleeve at least partially conforms to the shape of the hollow portion of the hot gas path component.

2. The impingement sleeve of claim 1 , wherein the baffles distribute fluid flow within the inner region.

3. The impingement sleeve of claim 1 , wherein the baffles are arranged and disposed to provide support to the article.

4. The impingement sleeve of claim 1 , wherein the at least two baffles extend in a direction selected from group consisting of axially, substantially axially, radially, substantially radially, and combinations thereof.

5. The impingement sleeve of claim 1 , wherein the at least two baffles are selected from the group consisting of a mesh weave, a porous plate, a series of flow preventers, and combinations thereof.

6. The impingement sleeve of claim 1 , wherein the baffle increases cooling efficiency.

7. The impingement sleeve of claim 1 , wherein the at least two baffles are arranged and disposed to define a plurality of sub-regions and to vary fluid flow in one or more sub-regions relative to another one of the plurality of sub-regions.

8. The impingement sleeve of claim 1 , wherein one of the two baffles is independently secured to the impingement sleeve.

9. A component, comprising:

a nozzle, blade or vane of a gas turbine having a cooling article insertably disposed therein, the cooling article comprising:

a body portion separating an inner region and an outer region;

an aperture fluidly connecting the inner region and the outer region; and

at least two baffles spanning the inner region and extending from a first portion of an inner surface of the cooling article to a second portion of the inner surface;

wherein the at least two baffles are arranged and disposed to distribute fluid flow between two or more of a plurality of inner sub-regions and

wherein:

at least one of the at least two baffles includes at least one opening extending therethrough;

the at least two baffles are arranged and disposed to vary fluid flow in the plurality of inner sub-regions relative to another one of the plurality of inner sub-regions such that fluid flow through a first portion of the plurality of apertures fluidly connecting the outer region with the inner region of a first inner sub-region is increased relative to fluid flow through a second portion of the plurality of apertures fluidly connecting the outer region with the inner region of a second inner sub-region; or

both.

10. The component of claim 9 , wherein the cooling article is an impingement sleeve.

11. The component of claim 9 , wherein the at least one of the at least two baffles includes the at least one opening extending therethrough.

12. The component of claim 11 , wherein the at least two baffles are selected from the group consisting of a mesh weave, a porous plate, a series of flow preventers, and combinations thereof.

13. The component of claim 9 , wherein the at least two baffles are arranged and disposed to distribute fluid flow between three or more of the plurality of inner sub-regions.

14. An impingement sleeve, comprising:

a body portion separating an inner region and an outer region;

a plurality of apertures in the body portion, the plurality of apertures fluidly connecting the inner region and the outer region; and

at least two baffles spanning the inner region and extending from a first portion of an inner surface of the impingement sleeve to a second portion of the inner surface;

wherein the impingement sleeve is arranged and disposed with a geometry that permits insertion within a hollow portion of a hot gas path component selected from the group consisting of a nozzle, a blade, and a vane of a gas turbine;

wherein the at least two baffles are arranged and disposed to vary fluid flow in a plurality of sub-regions relative to another one of the plurality of sub-regions such that fluid flow through a first portion of the plurality of apertures fluidly connecting the outer region with the inner region of a first sub-region is increased relative to fluid flow through a second portion of the plurality of apertures fluidly connecting the outer region with the inner region of a second sub-region; and

wherein the impingement sleeve at least partially conforms to the shape of the hollow portion of the hot gas path component.

15. The impingement sleeve of claim 14 , wherein at least one of the at least two baffles is independently secured to the impingement sleeve.

16. The impingement sleeve of claim 14 , wherein the at least two baffles are selected from the group consisting of a mesh weave, a porous plate, a series of flow preventers, and combinations thereof.

17. The impingement sleeve of claim 16 , wherein at least one of the at least two baffles includes the mesh weave.

18. The impingement sleeve of claim 16 , wherein at least one of the at least two baffles includes the porous plate.