Method for densification by chemical vapour infiltration
US12325666B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2022 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Nov 9, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/6581
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for densification by Chemical Vapor Infiltration of a plurality of fibrous preforms arranged in the enclosure of a densification furnace, the method including at least the following procedures a) and b), each being repeated more than once: a) introducing a first gaseous phase, the thermal decomposition of which allows the matrix to form in the pores of the plurality of fibrous preforms; b) introducing a second gaseous phase while simultaneously placing the enclosure of the furnace under vacuum, such that the introduction of the second gaseous phase takes place at the same time as the expulsion of the first gaseous phase out of the enclosure, the temperature of the second gaseous phase being less than or equal to 25° C. when it is introduced into the enclosure of the furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.