| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent impregnation of molten silicon to increase the wettability by forming the starting material which is a mixture of carbon powder, resin, and silicon carbide powder and ten applying pressure to the starting material to form it into a sheet-like molding and baking the molding into a substrate. SOLUTION: Carbon powder 1 with the average grain diameter of 1μm which is a basic material of a substrate 1, phenol resin and silicon carbide powder 2 with the average grain diameter of 1μm are mixed at the volume ratio of 40:40:20 to prepare the starting material. In a non-oxidizing atmosphere at 200 deg.C, the starting material is applied with pressure of 200 kg/cm2 using a double rolled rolling mill to be formed into a 150 mm-square and 1 mm-thick sheet-like molding. Thereafter, in the same non-oxidizing atmosphere, the temperature is raised up to 2000 deg.C to form the molding into a carbon composite material. By using such a material for a substrate, impregnation of molten silicon can be prevented and the wettability can be increased.</p> |
