POROUS SILICON CARBIDE AND PROCESS FOR PRODUCING THE SAME

摘要

A porous object which comprises silicon carbide particles as an aggregate and silicon metal as a binder, the particles being bonded to one another with the binder so as to have pores thereamong, characterized in that the surface of the silicon metal is selectively coated with a phase comprising alumina (high-melting compound). This porous object is produced by adding aluminum metal or an alloy comprising silicon metal and aluminum metal to raw materials comprising silicon carbide and silicon metal, mixing them, burning the mixture in an inert gas atmosphere or a reduced-pressure atmosphere, and then oxidizing and burning it in an oxygen atmosphere.