| 摘要 |
PURPOSE: To obtain a silicon carbide material having superior strength and suitable for use as the reinforcing fibers of a composite material, a heat insulator, a filter material, etc., and to especially obtain a silicon carbide material having a fibrous, sheetlike or three-dimensional structure. CONSTITUTION: This silicon carbide material is made of a fibrous, sheetlike or three-dimensional structure having 100-3,000m<2> /g specific surface area. A porous carbon material contg. at least one kind of metal selected from among B, Al, Si, Ti, Y and Mg or at least one kind of metallic compd. selected from among oxides, hydrides, hydroxides, alkoxides, nitrides and halides of the metals is allowed to react with gaseous SiO at 800-2,000 deg.C and the resultant metal- or metallic compd.-contg. silicon carbide material is heated at 800-2,200 deg.C in an atmosphere not practically contg. oxygen or in a gaseous atmosphere. |
