Method of producing ceramic heater for oxygen sensor

Details Method of producing ceramic heater for oxygen sensor Method of producing ceramic heater for oxygen sensor

1995-04-20

1998-04-07

Speer, Timothy

Plastic and nonmetallic article shaping or treating: processes

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

Of electrical article or electrical component

264616, 264619, 264642, 264643, 264656, 264663, 264676, 427269, 427314, 4273762, 4273763, 427380, 4273977, C04B 3332

Patent

active

057360952

ABSTRACT:
In order to produce a ceramic heater for an oxygen sensor, a method is used, which comprises the steps of: (a) molding a green cylindrical object from a ceramic material which contains a binder; (b) provisionally baking the green cylindrical object at a relatively lower temperature thereby to produce an insufficiently baked cylindrical object, the lower temperature being sufficient for removing the binder from the cylindrical object; (c) printing a heater pattern on a cylindrical surface of the insufficiently baked cylindrical object, the heater pattern being constructed of an electrically conductive material; (d) coating the printed cylindrical surface of the insufficiently baked cylindrical object with a green protection layer thereby to produce a layer-coated cylindrical object; and (e) baking said layer-coated cylindrical object at a relatively higher temperature sufficient for baking the insufficiently baked cylindrical object, the heater pattern and the green protection layer.

REFERENCES:
patent: 4035613 (1977-07-01), Sagawa et al.
patent: 5264681 (1993-11-01), Nozaki et al.
patent: 5630969 (1997-05-01), Shimada
Doerre et al., "Alumina, Processing, Properties, and Applications", Springer-Verlag, (1984).

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