High temperature oxidation protection for carbon-carbon composites
AssigneeGoodrich Corporation
InventorAtta Khan
Life of this patent
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Abstract
A method for forming an oxidation protection system on a composite structure is provided, which may comprise applying a ceramic layer slurry to the composite structure, wherein the ceramic layer slurry may comprise aluminum and silicon in a solvent or carrier fluid; heating the composite structure to form a ceramic layer on the composite structure, wherein the ceramic layer may comprise aluminum nitride; applying a sealing slurry to the composite structure, wherein the sealing slurry may comprise a sealing pre-slurry composition and a sealing carrier fluid, wherein the sealing pre-slurry composition may comprise a sealing phosphate glass composition; and/or heating the composite structure to form a sealing layer on the composite structure.
Claims20
A method for forming an oxidation protection system on a composite structure, comprising:
- applying a ceramic layer slurry to the composite structure, wherein the ceramic layer slurry comprises aluminum and silicon in a solvent or carrier fluid;
- heating the composite structure to form a ceramic layer on the composite structure, wherein the ceramic layer comprises aluminum nitride;
- applying a sealing slurry to the composite structure, wherein the sealing slurry comprises a sealing pre-slurry composition and a sealing carrier fluid, wherein the sealing pre-slurry composition comprises a sealing phosphate glass composition;
- and
- heating the composite structure to form a sealing layer on the composite structure.
An oxidation protection system disposed on an outer surface of a substrate, comprising:
- a ceramic layer comprising aluminum nitride;
- and
- a sealing layer comprising a sealing pre-slurry composition comprising a sealing phosphate glass composition.
An aircraft brake disk, comprising:
- a carbon-carbon composite structure comprising a non-friction surface;
- and
- an oxidation protection system disposed on the non-friction surface, the oxidation protection system comprising:
- a ceramic layer comprising aluminum nitride;
- and
- a sealing layer comprising a sealing pre-slurry composition comprising a sealing phosphate glass composition.
Dependencies are inferred from the claim text.