METHOD FOR PROTECTION AGAINST OXIDATION OF A CARBON-CONTAINING COMPOSITE PART
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- CENT LILLE INST
- Filing Date
- 2023-07-25
- Publication Date
- 2026-06-10
AI Technical Summary
Existing carbon/carbon composite materials used in aircraft brake discs are susceptible to oxidation at high temperatures, particularly catalyzed by atmospheric oxygen and de-icing agents, necessitating complex two-layer protective solutions that are cumbersome to implement.
A single-layer impregnation composition comprising colloidal silica, alkali metal and alkaline earth metal nitrates, and optional acid stabilizers is applied, followed by a vitrification heat treatment, forming an oxidation-resistant glass within the material to provide protection against high-temperature oxidation.
This method simplifies the protection process by eliminating the need for multiple layers, reduces heat treatment temperatures, and effectively shields the material from oxidation, enhancing its resistance to both thermal and catalytic oxidation.