✦ LIBER ✦
Carbon-carbon composites prepared by a rapid densification process I: Synthesis and physico-chemical data
✍ Scribed by E. Bruneton; B. Narcy; A. Oberlin
- Book ID
- 104107149
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 611 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0008-6223
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✦ Synopsis
A
new process for the rapid densification (1.5-2 mm h-' at 1000°C for a carbon felt) of carbon porous preforms is described and physico-chemical data are given: density, porosity, and kinetics.
The reinforcements chosen in this study are a Le Carbone Lorraine@ ravon based felt (RVC 2000) and two types of PAN based carbon fibers {T 300 type and AS 4 Courtauldsj. The composiies are processed with cyclohexane as a precursor in the 900-1350°C temperature range. The reasons for rapid densification by this peculiar process are discussed considering the thermal gradient which exists within the preform.