Oxygen sensor

Details Oxygen sensor Oxygen sensor

1995-06-05

1997-08-26

Ryan, Patrick

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

264618, B32B 900

Patent

active

056606613

ABSTRACT:
A measuring electrode and a reference plate are formed on the front and rear surfaces, respectively, of the electrolytic plate. The vent plate is provided with a vent channel. The heater base comprises a heating element. The electrolytic plate is made of a green sheet of zirconium oxide consisting of 5 to 7 molar % Y.sub.2 O.sub.3 and 0 to 5 parts by weight of aluminum oxide. The average particle diameter of the zirconium oxide powder is less than 2.0 .mu.m. The green sheet of zirconium oxide has a thickness of 50 to 300 .mu.m. The heater base is made of a green sheet of aluminum oxide consisting of aluminum oxide powder having an average particle diameter of less than 1.0 .mu.m and 0 to 10 parts by weight of zirconium oxide or yttria-stabilized zirconium oxide. The green sheet of aluminum oxide is at least 4 times the thickness of the green sheet of zirconium oxide. To complete the oxygen sensor, these four components are sintered together at 1300.degree. to 1600.degree. C. to be integrated.

REFERENCES:
patent: 4334974 (1982-06-01), Muller
patent: 4407057 (1983-10-01), Kimura
patent: 4559126 (1985-12-01), Mase et al.
patent: 4940528 (1990-07-01), Oki et al.
patent: 5122487 (1992-06-01), Hayakawa
patent: 5238549 (1993-08-01), Makino
patent: 5278007 (1994-01-01), Nanataki
patent: 5447618 (1995-09-01), Sugiyama

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