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US 11,534,936 B2Granted
Method of forming cooling channels in a ceramic matrix composite component
AssigneeRaytheon Technologies Corporation
InventorsLei Jin, Zachary P. Konopaske, Ryan M. Brodeur, Howard J. Liles, Bryan H. Farrar, Andrew J. Lazur
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Abstract
A method of forming a ceramic matrix composite component with cooling channels includes embedding a plurality of wires into a preform structure, densifying the preform structure with embedded wires, and removing the plurality of wires to create a plurality of corresponding channels within the densified structure.
Claims8
A method of forming a ceramic matrix composite component with cooling channels, the method comprising:
- embedding a plurality of molybdenum wires into a preform structure comprising a plurality of fiber plies and an outer surface, the embedding step comprising one of:
- inserting the plurality of molybdenum wires into the preform structure such that the wires push aside fibers of the plies;
- and
- weaving the plurality of molybdenum wires into the preform structure;
- wherein at least a subset of the plurality of embedded molybdenum wires are embedded, with respect to the outer surface of the preform structure, at an angle ranging from 5° to 25°;
- densifying the preform structure with the plurality embedded molybdenum wires;
- and
- removing the plurality of molybdenum wires using a chemical etchant comprising nitric acid and sulfuric acid to create a plurality of corresponding channels within the densified preform structure.
5 more elements
Dependencies are inferred from the claim text.