| 摘要 |
PURPOSE:To mass-produce a reaction-sintering silicon carbide sintered body having excellent performance by molding a mixture powder of silicon carbide powder and carbon powder, calcining to obtain plural calcined bodies, gathering these calcined bodies into an assembly with a carbonaceous material provided among the bodies and impregnating this assembly with molten metal silicon. CONSTITUTION:An org. binder is added to a mixture powder of silicon carbide powder and carbon powder or org. material which can act as the carbon source, and then the mixture is molded and calcined. Plural number of these calcined bodies are gathered into one assemble and impregnated with a molten metal silicon while heating to effect the reaction of silicon and the carbon source in the calcined bodies to obtain the reaction-sintering silicon carbide sintered body. In this process, the following procedure is carried out. Namely, plural calcined bodies 2 are assembled with a carbonaceous material 4 provided among the calcined bodies 2 to form an assemble 1 (contained in a box 3 comprising a carbonaceous material which permeates molten metal silicon), and then the molten metal silicon 6 is made to permeate each calcined body 2 of the assembly 1 through the interposed carbonaceous material 4. |
