Consumable core for manufacture of composite articles and related method

Patent metadata

Field	Value
Publication number	US-9751807-B2
Application number	US-201213586930-A
Country	US
Kind code	B2
Filing date	Aug 16, 2012
Priority date	Aug 16, 2012
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

Systems, methods and devices adapted to ease manufacture of composite articles (e.g., ceramic composite articles), particularly composite articles which include a hollow feature are disclosed. In one embodiment, a system includes: a consumable core formed to be disposed within an inner portion of a composite precursor, the consumable core adapted to convert into an infiltrant during a manufacturing process and infiltrate the composite precursor.

First claim

What is claimed is:

1. A system comprising:
a consumable core configured to be disposed within a hollow feature within a composite precursor, the consumable core completely enclosed by the composite precursor, the consumable core configured to be consumed during a melt infiltration manufacturing process, wherein the consumable core infiltrates the composite precursor, wherein the hollow feature is vacated by the consumable core.

2. The system of claim 1 , further comprising an external feed connected to the consumable core via a wick for supplying a flow of infiltrant material to the composite precursor.

3. The system of claim 1 , wherein the consumable core includes a cast material.

4. The system of claim 1 , wherein the consumable core includes at least one of silicon or boron.

5. The system of claim 1 , further comprising an external block disposed proximate the composite precursor for supplying infiltrant material to the composite precursor.

6. A system, comprising:
a composite precursor having a hollow feature; and
a consumable core disposed within the hollow feature of the composite precursor, the consumable core completely enclosed by the composite precursor, the consumable core configured to convert into an infiltrant during a manufacturing process and infiltrate the composite precursor wherein the hollow feature is vacated during the melt infiltration manufacturing process.

7. The system of claim 6 , further comprising an external block disposed substantially proximate the composite precursor and adapted to supply additional infiltrant material to infiltrate the composite precursor.

8. The system of claim 6 , further comprising a reservoir connected to the consumable core via a drain, the reservoir adapted to receive a flow of infiltrant material from the consumable core.

9. The system of claim 6 , wherein the consumable core is formed from sintered powders and includes at least one of silicon and boron.

10. The system of claim 6 further comprising:
an external feed connected to the consumable core via a wick, the external feed adapted to supply a flow of infiltrant material to the composite precursor.

11. The system of claim 6 , wherein the composite precursor is porous and carbonized.

12. The system of claim 10 , wherein the wick includes woven carbon fiber.

Assignees

• Taxacher Glenn Curtis
• De Diego Peter
• Gray Paul Edward
• Monaghan Philip Harold
• Gen Electric

Inventors

• Taxacher Glenn Curtis
• De Diego Peter
• Gray Paul Edward
• Monaghan Philip Harold

Classifications

• C04B2235/616

  Liquid infiltration of green bodies or pre-forms · CPC title

• C04B2235/428

  Silicon · CPC title

• C04B35/563

  based on boron carbide · CPC title

• C04B35/5607 Primary

  based on refractory metal carbides · CPC title

• C04B2235/421

  Boron · CPC title