Solid closed ended tubular oxygen sensor

Details Solid closed ended tubular oxygen sensor Solid closed ended tubular oxygen sensor

1978-01-11

1979-05-01

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

G01N 2758

Patent

active

041522346

ABSTRACT:
A solid closed ended tubular oxygen sensor element, particularly useful for sensing the oxygen content of exhaust gases from internal combustion engines. The closed end of the tubular element which is adapted to be exposed to the hot exhaust gases is made of zirconium oxide stabilized with yttrium oxide and/or ytterbium dioxide. The remaining main portion of the tubular element is made of zirconium dioxide stabilized with calcium oxide. The invention also provides methods of manufacturing these tubular elements.

REFERENCES:
patent: 3723279 (1973-03-01), Fruehan et al.
patent: 3776831 (1973-12-01), Roy et al.
patent: 3791954 (1974-02-01), Makoto et al.

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