PROCESS AND APPARATUS FOR THE ACCELERATED DENSIFICATION OF A POROUS CARBONACEOUS SUBSTRATE BY DECOMPOSITION OF A HYDROCARBONACEOUS SUBSTANCE AT HIGH TEMPERATURE AND HIGH PRESSURE, AND METHOD FOR THE PREPARATION OF THE SAID SUBSTANCE

摘要

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.