Electroconductive composite ceramics

摘要

The electroconductive composite ceramics composed of an independent phase of conglomerates having a particle diameter of at least 20 mu and a continuous phase connecting mutually the independent phase of conglomerates. Particularly, electroconductive composite ceramics composed of (A) 50-98% by weight of an independent phase of conglomerates having a particle diameter of at least 20 which consists essentially of a phase of insulating or semiconductive ceramics having a high melting point or a mixture thereof and (B) 50-2% by weight of a continuous phase of an electroconductive substance connecting mutually the independent phase of conglomerates. The electroconductive composite ceramics exhibit stable electroconductivity-temperature characteristics at a temperature of 1000 DEG C. or higher and have excellent thermal shock resistance, mechanical strength and chemical resistance.