ELECTRICALLY CONDUCTIVE ZIRCONIA-BASED SINTERED BODY AND PROCESS FOR THE PRODUCTION THEREOF

摘要

The present invention relates to a zirconiabased sintered body comprising TiN, TiO2 and ZrO2 and having electric conductivity and a process for the production thereof. The present invention provides a zirconia-based sintered body which has, at normal temperature, a mechanical strength of not less than 50 kg/mm2, a fracture toughness of not less than 4 MPaml/2, a Vickers hardness of not less than 1,000 kg/mm2 and a volume resistivity of not more than 1 .OMEGA.cm, and which is sinterable under normal pressure at low temperature, and a process for the production thereof.