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US 2023/0407532 A1Published application
Particle-imbedded serving yarn for cmc applications
AssigneeRaytheon Technologies Corporation
InventorBrendan Lenz
Life of this patent
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Abstract
A method of preparing a fibrous preform for use in a ceramic matrix composite comprises coiling a serving yarn around a ceramic tow to form a served tow, the serving yarn comprising a polymer material with embedded ceramic particles, incorporating the served tow into a woven fabric, the woven fabric comprising a plurality of served tows, and removing the polymer material of the serving yarn such that the embedded ceramic particles remain in the woven fabric.
Claims20
A method of preparing a fibrous preform for use in a ceramic matrix composite, the method comprising:
- coiling a serving yarn around a ceramic tow to form a served tow, the serving yarn comprising a polymer material with embedded ceramic particles;
- incorporating the served tow into a woven fabric, the woven fabric comprising a plurality of served tows;
- and
- removing the polymer material of the serving yarn such that the embedded ceramic particles remain in the woven fabric.
1 more element
A fibrous ceramic preform comprising:
- a woven fabric formed from a plurality of ceramic tows;
- and
- ceramic particles deposited on the woven fabric;
- wherein the percent by volume of ceramic particles in the preform ranges from 2% to 20%.
1 more element
Dependencies are inferred from the claim text.