Process for producing hollow bodies comprising fiber-reinforced ceramic materials,
where mold cores whose shape corresponds to that of the hollow spaces are produced
in a first step, at least one mold core together with a press moulding composition
or formable fiber composition are introduced into a mold, where the press moulding
composition comprises carbon fibers and/or carbon filaments and thermally curable
carbonizable binders, in such a way that the position of the cores corresponds
to the desired position of the hollow spaces to be formed in a second step, the
composition is cured in a third step by heating to a temperature of from 120
C. to 280 C., to give a green body, the strengthened green body is carbonized
and or graphitized in a fourth step by heating in a nonoxidizing atmosphere to
a temperature of from about 750 C. to about 2400 C. to form a C/C body,
wherein heating in the third and/or fourth step is at least partly effected by
an electric current being passed through the pressable composition or the green
body and through at least one mold core, hollow bodies produced in this way and
their use for producing clutch disks or brake disks, in particular for automobiles