METHOD FOR PRODUCING PTC CERAMIC CYLINDER

摘要

PROBLEM TO BE SOLVED: To uniformly sinter a PTC ceramic cylinder useful for the material of a self temperature-controlling heater, and the like, without breakage. SOLUTION: A cylindrical green body 1 molded from barium titanate raw material is embedded in heat-resistant powder 3 and then sintered to produce the PTC ceramic cylinder. The cylindrical green body 1 can uniformly be sintered without breakage.