Ceramic matrix composite component and method of forming thereof

Patent metadata

Field	Value
Publication number	US-10071537-B2
Application number	US-201314099225-A
Country	US
Kind code	B2
Filing date	Dec 6, 2013
Priority date	Dec 6, 2013
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

A method of forming a ceramic matrix composite component is provided. The method includes applying a first amount of adhesive across a surface of a release film, providing a first ceramic foam panel including a plurality of channels formed on a first side of the first ceramic foam panel, contacting the first ceramic foam panel and the release film such that adhesive transfers to the first side of the first ceramic foam panel, and coupling the first ceramic foam panel to a second ceramic foam panel.

First claim

What is claimed is:

1. A method of forming a ceramic matrix composite component, said method comprising:
applying a first amount of adhesive across a surface of a release film;
providing a first ceramic foam panel including a plurality of channels formed on a first side of the first ceramic foam panel;
pressing the first side of the first ceramic foam panel against the first amount of adhesive and release film;
separating the first ceramic foam panel from the release film such that a portion of the first amount of adhesive transfers to the first side of the first ceramic foam panel;
aligning the first side of the first ceramic foam panel to a first side of a second ceramic foam panel;
applying a compressive force between the first ceramic foam panel and the second ceramic foam panel such that at least a portion of the adhesive transferred to the first side of the first ceramic foam panel diffuses at least partially into the first and second ceramic foam panels; and
curing and sintering to couple the first and second ceramic foam panels, wherein the first amount of adhesive is selected such that excess adhesive flows into the plurality of channels when the compressive force is applied, thereby forming a fillet from the excess adhesive that is oriented such that the plurality of channels remain at least partially open.

2. The method in accordance with claim 1 , wherein applying the first amount of adhesive comprises determining the first amount of adhesive that facilitates limiting excess adhesive from flowing into the plurality of channels.

3. The method in accordance with claim 2 , wherein determining the first amount of adhesive comprises measuring a thickness of the first amount of adhesive on the surface of the release film.

4. The method in accordance with claim 1 , wherein applying the first amount of adhesive comprises forming a first layer of adhesive having a thickness within a range between about 8 mils and about 10 mils on the surface of the release film.

5. The method in accordance with claim 1 , wherein applying the first amount of adhesive comprises applying the first amount of adhesive at a substantially uniform thickness across the surface of the release film.

6. The method in accordance with claim 1 , wherein applying a first amount of adhesive comprises extending the first amount of adhesive over the surface of the release film such that the first amount of adhesive extends past free edges of the first ceramic foam panel.

7. The method in accordance with claim 1 , further comprising:
applying a second amount of adhesive to a the first side of the second ceramic foam panel; and
applying a compressive force between the first ceramic foam panel and the second ceramic foam panel such that at least a portion of the adhesive transferred to the first side of the first ceramic foam panel and the second amount of adhesive diffuses at least partially into the first ceramic foam panel and the second ceramic foam panel.

8. The method in accordance with claim 7 , further comprising determining the first and second amounts of adhesive that facilitate reducing a cross-sectional area of the plurality of channels by less than about 10 percent.

9. The method in accordance with claim 7 , wherein applying the second amount of adhesive comprises forming a second layer of adhesive having a thickness within a range between about 8 mils and about 10 mils on the first side of the second ceramic foam panel.

10. The method in accordance with claim 1 further comprising forming the fillet between a side wall of the plurality of channels and a first side of the second ceramic foam panel.

11. The method in accordance with claim 1 , wherein aligning the first side of the first ceramic foam panel to a first side of a second ceramic foam panel comprises substantially aligning free edges of the first and second ceramic foam panels.

12. The method in accordance with claim 1 , wherein contacting the first ceramic foam panel and the release film comprises contacting the first ceramic foam panel and the release film such that the portion of the first amount of adhesive selectively transfers to the first side of the first ceramic foam panel.

13. The method in accordance with claim 1 further comprising forming the release film from a flexible material.

14. A ceramic matrix composite component comprising:
a first ceramic foam panel including a plurality of channels formed on a first side of said first ceramic foam panel, wherein each channel of the plurality of channels includes at least one interior side wall;
a first amount of adhesive applied to said first side of said first ceramic foam panel, wherein said first amount of adhesive is transferred to said first side from a surface of a release film by pressing said first side of said first ceramic foam panel against said first amount of adhesive and release film and separating said first ceramic foam panel from said release film such that a portion of said first amount of adhesive transfers to said first side of the first ceramic foam panel; and
a second ceramic foam panel coupled to said first ceramic foam panel with said portion of said first amount of adhesive, wherein said first amount of adhesive is selected such that at least a portion of said first amount of adhesive diffuses at least partially into said first and second ceramic foam panels and such that excess adhesive flows into said plurality of channels when said first ceramic foam panel and said second ceramic foam panel are coupled together by curing and sintering, wherein a fillet is formed from said excess adhesive, said fillet oriented such that said at least one interior side wall remains exposed to fluid channeled through said plurality of channels.

15. The component in accordance with claim 14 further comprising a second amount of adhesive applied to a first side of said second ceramic foam panel to be coupled to said first ceramic foam panel.

16. The component in accordance with claim 15 further comprising determining the first and second amounts of adhesive that facilitate reducing a cross-sectional area of the plurality of channels by less than about 10 percent.

17. The component in accordance with claim 14 , wherein said first amount of adhesive on the surface of the release film has a thickness within a range between about 8 mils and about 10 mils.

18. The component in accordance with claim 14 , wherein the fillet is formed between a side wall of said plurality of channels and a first side of said second ceramic foam panel.

19. The component in accordance with claim 14 , wherein said first amount of adhesive is determined such that the excess adhesive flowing into said plurality of channels facilitates reducing a cross-sectional area of said plurality of channels by less than about 10 percent.

Assignees

• Boeing Co

Inventors

• Muench Brian Lee
• Dahmen Morris

Classifications

• B32B37/1284

  Application of adhesive · CPC title

• F05D2240/11

  Shroud seal segments · CPC title

• Y02T50/675

  Cross-Sectional Technologies · mapped topic

• F05D2260/204

  by the use of microcircuits · CPC title

• C04B2237/592

  whereby the interlayer is not continuous, e.g. not the whole surface of the smallest substrate is covered by the interlayer · CPC title