Chemical vapor deposition method
Method for densifying a porous carbon preform. The method includes the steps of: (a) providing the apparatus; (b) charging the apparatus with a plurality of stacks of annular porous carbon preforms, the preforms being separated from one another by spacers; (c) locating the charged apparatus in a fur...
Gespeichert in:
| Hauptverfasser: | , , , , |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | Method for densifying a porous carbon preform. The method includes the steps of: (a) providing the apparatus; (b) charging the apparatus with a plurality of stacks of annular porous carbon preforms, the preforms being separated from one another by spacers; (c) locating the charged apparatus in a furnace at a temperature in the range of 950-1100° C. and a pressure in the range of 5-40 torr; and (d) circulating a natural gas reactant blended with up to 15% propane through the apparatus for a period of from 150 to 900 hours. Carbon-carbon composite preforms made by this method may be configured as aircraft landing system brake discs or racing car brake discs. |
|---|