REFRACTORY AND ELECTROCONDUCTIVE CERAMIC COMPOSITIONS AND PROCESS FOR THE PREPARATION THEREOF

摘要

KI 3991 "REFRACTORY AND ELECTROCONDUCTIVE CERAMIC COMPOSITIONS AND PROCESS FOR THE PREPARATION THEREOF" Refractory and electroconductive ceramic compositions having a density higher than 4 g/cm , ultimate tensile strength higher than 250 MPa, Vickers microhardness higher than 1000 kg/mm2 and electric resistivity lower than 600 microohm.cm, essentially consisting of alumina and of a nitride component of at least one transition metal belonging to groups IVB, VB or VIB of the Periodic Chart of the Elements.