Process for the preparation of semiconducting ceramics composed of metal oxides, in particular of tin oxide, especially for varistors

摘要

Process for the preparation of a semiconducting ceramic based on doped tin oxide SnO₂ by a process of "PADO" (Precursor Alloy Direct Oxidation) type applied to an alloy of tin and of doping metals or by a process of "PADO" type applied to tin, the doping metals being added in the form of oxides to the powder subjected to sintering.