| 摘要 |
PROBLEM TO BE SOLVED: To impart antioxidation property to the surface of a base material without deteriorating its mechanical characteristics by forming an intermediate layer comprising a carbonized resin containing graphite powder on the surface of a base body consisting of a carbon fiber reinforced carbon composite material, and then coating the intermediate layer with silicon carbide. SOLUTION: A mixture soln. containing graphite powder and a resin such as a phenol resin is applied or sprayed on the surface of a base material consisting of a carbon fiber reinforced carbon composite material preferably subjected to the treatment to form pyrolyzed carbon on its surface layer by a CVD method. The applied soln. is calcined and heat treated to be carbonized to form an intermediate layer containing graphite powder in the carbonized resin. The graphite powder has preferably 5 to 100 μm particle size and is preferably compounded by about 20 to 50 pts.wt. to 100 pts.wt. of the resin. The intermediate layer is preferably formed to 50 to 500 μm thickness. Then, on the surface of the intermediate layer as a buffer layer for thermal expansion, SiC is applied by about 30 to 500 μm thickness by a vapor deposition method using a source gas containing an Si source such as SiH4. |
