Patent ID: 8668865

Claim:
Process for producing ceramic materials, comprising in sequence: preparing a mixture containing carbon particles with a spherical shape and an average diameter of 0.2 μm to 800 μm, and a binder selected from artificial resins and pitches and optionally fibers of carbon with a diameter from 4 μm to 12 μm and a length from 0.1 mm to 48 mm; compacting the mixture into an essentially pore-free body; carbonizing the body by heating to a temperature from 750° C. to 1300° C. into a porous carbon body; and converting the porous carbon body with a carbide-forming element or a mixture of several carbide-forming elements at a temperature in the range of the melting point of the carbide-forming element or a mixture of these several carbide-forming elements to a temperature of 500 K above the indicated melting point, at least 10% of the mass of the carbon in the carbon body being reacted into carbide.