Ceramic heater, a method of making the same and a ceramic glow plug having the ceramic heater

摘要

In a ceramic heater a heating element is embedded in a basal ceramic body which is prepared with silicon nitride as a main constituent. MoSi2 particles are dispersed throughout the basal ceramic body. The MoSi2 particles have a granular diameter ranging from 0.1 mu m up to but not including 3.0 mu m. The MoSi2 particles range from 1.0% to 5.0% by weight.