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US 2024/0199499 A1Published application
Sacrificial yarn filament for use in ceramic matrix composites, methods of manufacture thereof and articles comprising the same
AssigneeRaytheon Technologies Corporation
InventorsKathryn S. Read, Zachary P. Konopaske, Steven R. Clarke, Aaron Tomich
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Abstract
Disclosed herein is a composite tow comprising a plurality of ceramic filaments; one or more sacrificial yarn filaments; where the sacrificial yarn filaments are operative to undergo decomposition or melting upon being subjected to an elevated temperature; and wherein the sacrificial yarn filaments leave open spaces in the tow upon being subjected to decomposition, dissolution or melting; where the filaments have an average filament diameter of 5 to 15 micrometers.
Claims20
A composite tow comprising:
- a plurality of ceramic filaments:
- one or more sacrificial yarn filaments;
- where the sacrificial yarn filaments are operative to undergo decomposition, dissolution or melting upon being subjected to an elevated temperature;
- and wherein the sacrificial yarn filaments leave open spaces in the tow upon being subjected to decomposition, dissolution or melting:
- where the filaments have an average filament diameter of 5 to 15 micrometers.
2 more elements
A method comprising:
- co-mingling a plurality of ceramic filaments with a or more sacrificial yarn filaments to form a composite tow;
- where the ceramic filaments have an average filament diameter of 5 to 15 micrometers.
Dependencies are inferred from the claim text.