IP Library › Granted Patent US 12,565,450
Granted Patent B2
US 12,565,450 · App. 17/843,715 · Granted Mar 3, 2026

Oxidation protection for carbon-carbon composites

Inventor: Atta Khan (Riverside, CA)
Assignee: GOODRICH CORPORATION
C04B35/62222C04B35/565C04B41/5022C04B2235/3826C04B2235/402C04B2235/963C04B2235/9684
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Quick Facts
Patent No.
US 12,565,450
App. No.
17/843,715
Granted
Mar 3, 2026
Kind
B2
Abstract

A method for forming an oxidation protection system on a composite structure may comprise applying a ceramic layer slurry to the composite structure and heating the composite structure to form a ceramic layer on the composite structure. The ceramic layer slurry may comprise aluminum and silicon carbide powder in a sol. The ceramic layer may comprise alumina, silicon carbide and silicon oxycarbide.

Claims (11)

1 . An oxidation protection system disposed on an outer surface of a substrate, the oxidation protection system comprising:

a ceramic layer comprising between 1% and 20% by weight alumina, between 50% and 80% silicon carbide, and between 10% and 30% by weight silicon oxycarbide; and

a sealing layer comprising a sealing glass composition located over the ceramic layer.

2 . The oxidation protection system of claim 1 , further comprising a boron layer formed between the ceramic layer and the substrate.

3 . The oxidation protection system of claim 2 , wherein the ceramic layer comprises about 5% by weight alumina, about 75% by weight silicon carbide and about 20% by weight silicon oxycarbide.

4 . 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 including:

a ceramic layer comprising between 1% and 20% by weight alumina, between 50% and 80% silicon carbide, and between 10% and 30% by weight silicon oxycarbide; and

a sealing layer comprising a sealing glass composition located over the ceramic layer.

5 . The aircraft brake disk of claim 4 , wherein the oxidation protection system further comprising a boron layer formed between the ceramic layer and the non-friction surface.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 17, 2022
From: KHAN, ATTA
To: GOODRICH CORPORATION
Reel/Frame 060242/0536 →
Continuity (1)
Related Publication 20230406778A1 · Dec 21, 2023
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