Method for producing a lightened SiC sandwich type structure with a honeycomb-shaped core and structure obtained by said method
US6187123A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1998 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Oct 22, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2237/704
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention concerns a method for producing a lightened SiC structure, especially for the production of a lightened mirror, with the following stages: PA1 cutting of a preform with a honeycomb-shaped structure whose voiles have an organic matrix and a fibrous reinforcement, PA1 pyrolysis of this honeycomb-shaped structural preform so as to solely preserve the carbon, PA1 silicidation of the carbon of the preform so as to obtain a microporous SiC core, PA1 infiltrating type reinforcement by means of a SiC chemical vapor phase depositing of the voiles of the honeycomb structure of the core, PA1 embodiment of a felt sheet and assembling on at least one face of the core of the embodied sheet and densification of this sheet so as to obtain at least one SiC skin on the surface of the core. The invention also concerns the structure obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.