| 摘要 |
PURPOSE:To obtain the title compound material having high strength, high elastic modulus and causing no delamination on the surface by precipitating carbon by gaseous phase thermal cracking and filling the voids of a carbon/ carbon compound material with the precipitated carbon, then coating the surface of the carbon/carbon compound material with the precipitated carbon. CONSTITUTION:A fabric or molded body is prepd. from bundles of many continuous carbon fibers, and carbonaceous pitch, phenol resin, etc., is impregnated thereinto, and the impregnated product is carbonized under a press. The tissue is made denser by repeating the impregnation/carbonization cycle necessary times. Thus, a carbon/carbon compound material constituted of 10-70vol.% molded body of carbon fibers and 5-80vol.% carbonaceous matrix, and having 10-55% void is produced. Then, the voids of the carbon/carbon compound material is filled with deposited carbon produced by the gaseous phase thermal cracking. The surface is further coated with carbon deposited by the gaseous phase thermal cracking. Thus, a carbon/carbon compound material is obtd. |
