Oxygen sensor and a process for production thereof

Details Oxygen sensor and a process for production thereof Oxygen sensor and a process for production thereof

1993-12-23

1996-05-21

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204426, 264 56, 264 60, 264 61, G01N 27407

Patent

active

055186033

ABSTRACT:
An oxygen concentration detecting device has a solid electrolyte made of a partially stabilized zirconia on one face of which is formed a measuring electrode exposed to a gas to be measured and on the other face of which a standard electrode exposed to a standard gas. An oxygen concentration detecting device provided with a protecting layer covers the measuring electrode formed on the oxygen concentration detecting device on the face exposed to the gas to be measured, the protecting layer being made of a partially stabilized sintered material of a partially stabilized zirconia material having a specific surface area of not less than 3 m.sup.2 /g and not more than 6.4 m.sup.2 /g to which a divalent or trivalent metal oxide, such as yttria, is added.

REFERENCES:
patent: 3645875 (1972-02-01), Record et al.
patent: 4582657 (1986-04-01), Shibata et al.
patent: 4915814 (1990-04-01), Harada et al.
Hackh's Chemical Dictionary, 4th ed., (1969) month unavailable, p. 627.

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