Method for manufacturing a ceramic heater

Details Method for manufacturing a ceramic heater Method for manufacturing a ceramic heater

1999-01-29

2000-11-07

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Of electrical article or electrical component

264618, C04B 3332

Patent

active

061432385

ABSTRACT:
Ceramic raw powder containing conductive ceramic powder is mixed with a prescribed quantity of a molding assistant containing carbon component. This mixture is molded into a prescribed shape of a resistive heating element to thereby produce a heating element mold. A composite mold is prepared by embedding the heating element mold into molds of a ceramic substrate. The composite mold is sintered at a sintering temperature of 1700.degree. C. or higher. During a process of rising temperature to the sintering temperature, the composite mold is kept in an oxygen containing atmosphere having an oxygen partial pressure of 2.times.10.sup.-4 to 1.0 Torr for 7 minutes or longer at a temperature of 1200.degree. C. or higher.

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patent: 4613455 (1986-09-01), Suzuki et al.
patent: 4668452 (1987-05-01), Watanabe et al.
patent: 4855575 (1989-08-01), Melanson
patent: 5736095 (1998-04-01), Shimada et al.

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