Process for the manufacture of compact composite carbonaceous materials by densification of porous carbonaceous substrates
US4525337A · kind A · utility
4Cited by
8References
3Claims
0Family size
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Key dates
| Filing date | Mar 21, 1983 |
| Grant date | Jun 25, 1985 |
| Priority date | — |
| Expiry date | Mar 21, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B41/81
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for the high temperature, high pressure impregnation of thick woven carbon substrates with pitches to form carbon impregnated carbon bodies. The use of pitch with high (about 30%) levels of free carbon as the impregnating pitch reduces the number of cycles to obtain a product of given density as compared to carbon free pitch. The impregnation is conducted in hydrogen permeable aneroid vessels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.