Method for densifying porous annular substrates by chemical vapour infiltration
US11512024B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2019 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Aug 12, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for densifying porous annular substrates by chemical vapor infiltration, includes providing a plurality of unit modules including a support tray on which substrates are stacked, the support tray including a gas intake opening extended by an injection tube disposed in an internal volume formed by the central passages of the stacked substrates, the injection tube including gas injection orifices opening into the internal volume, forming stacks of unit modules in the enclosure of a densification furnace and injecting, into the stacks of unit modules, a gas phase including a gas precursor of a matrix material to be deposited within the porosity of the substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.