| 摘要 |
PURPOSE:To obtain carbon fiber reinforced carbonaceous material having high density in a short time by arranging the carbon fiber reinforced carbonaceous material under reduced pressure, by introducing hydrocarbon gas to pores of the carbonaceous material by making pressure difference between supply and exhausting side and by decomposing the hydrocarbon. CONSTITUTION:The carbon fiber reinforced carbonaceous material 3 is arranged in a high temp. reaction furnace 1 and supported with a supporting tool 2. The furnace 1 is heated at 1,100-1,500 deg.C while reducing the pressure in the furnace >=400Torr with a exhauster 8. Then, hydrocarbon gas 4 (e.g. methane gas) is introduced to the reaction furnace 1 from a gas supplying port 5 to make pressure difference by pressure loss and make lower pressure in the exhausting side than in the supplying side. Thereby, the hydrocarbon gas 4 is introduced to pores of the carbonaceous material 3 and decomposed at 1,100-1,500 deg.C to fill up the pores with carbon obtd. by the thermal decomposition and produce the carbon fiber reinforced carbonaceous material having high density. |
