| abstract |
There is disclosed an oxide-bonded silicon carbide material which has a more excellent strength as compared with a presently mainly available high-strength ceramic material (e.g., alumina, Si-impregnated SiC, or recrystallized SiC refractory material) and which improves mass productivity and facilitates the manufacturing of large-sized products, so that even products having complicated shapes can be easily prepared, and manufacturing costs can be largely reduced. The oxide-bonded silicon carbide material is substantially made of silicon carbide, has crystal particles of silicon carbide, grain boundaries and pores thereof, and has a structure in which the crystal particles of silicon carbide are bonded with an oxide containing silicon dioxide as a main component. A bending strength at ordinary temperature or a high temperature is 100 MPa or more, and a bulk specific gravity is 2.65 or more. |