| 摘要 |
PURPOSE:To provide an efficient process for the production of a carbon fiber- reinforced carbon composite material coated with silicon carbide, suitable to be used in a hot oxidizing atmosphere such as turbine blade and rocket nozzle or suitable for improving the adhesivity of a dense heat-resistant ceramic applied to the surface. CONSTITUTION:A carbon fiber-reinforced carbon composite material containing carbon fiber as reinforcing fiber and carbon as the matrix is made to react with silicon or a silicon-containing substance to completely or partially convert the carbon fiber and the matrix carbon near the surface of the composite material into silicon carbide and obtain a carbon fiber-reinforced carbon composite material coated with a mixed layer of carbon and silicon carbide. In this process, the reaction of silicon or the silicon-containing substance with the carbon fiber-reinforced carbon composite material is carried out after or during the formation of through-holes having action to assist the intrusion of the silicon or the silicon-containing substance into the carbon fiber-reinforced carbon composite material by removing a part of the carbon fiber or the matrix carbon near the surface of the carbon composite material. |
