Machinable CMC insert
AssigneesROLLS-ROYCE plc, Rolls-Royce American Technologies, Inc.
InventorsTed J. Freeman, Thomas D. Nixon, Sean E. Landwehr, Aaron D. Sippel, Donald W. Reinhart
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Abstract
An assembly comprising a ceramic matrix composite component, a monolithic insert, and a polymer char and a method for producing the same. The ceramic matrix composite component may include an exterior surface, with the monolithic insert bonded to the exterior surface of the ceramic matrix composite component. The polymer char may be sandwiched between the monolithic insert and the exterior surface of the ceramic matrix composite that may bond the monolithic insert to the ceramic matrix composite component.
Claims19
An assembly for use in a gas turbine engine, the assembly comprising
- a ceramic matrix composite component having an exterior surface,
- a monolithic insert bonded to the exterior surface of the ceramic matrix composite component, and
- a polymer char sandwiched between the monolithic insert and the exterior surface of the ceramic matrix composite component that bonds the monolithic insert to the ceramic matrix composite component, wherein the ceramic matrix composite component and the monolithic insert are co-infiltrated with silicon, silicon alloy, silicon carbide, or a combination thereof.
A method of joining a monolithic insert to a ceramic matrix composite component for use in a gas turbine engine, the method comprising
- providing a ceramic preform comprising silicon carbide fibers,
- depositing a pre-ceramic polymer along an exterior surface of the ceramic preform,
- positioning the monolithic insert along the exterior surface of the ceramic preform such that the pre-ceramic polymer is sandwiched between the ceramic preform and the monolithic insert,
- heating the pre-ceramic polymer to form a polymer char that bonds the monolithic insert to the ceramic preform, and
- co-infiltrating the ceramic preform and the monolithic insert with liquid silicon, silicon alloy, silicon carbide, or a combination thereof.
Dependencies are inferred from the claim text.