Oxygen sensing element and process of manufacturing the same

Details Oxygen sensing element and process of manufacturing the same Oxygen sensing element and process of manufacturing the same

1988-02-09

1989-08-15

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

156667, 427125, 4271263, 501103, 501105, G01N 2758

Patent

active

048571652

ABSTRACT:
An oxygen sensing element having an oxygen-ion conductive solid electrolyte body, a measuring and a reference electrode formed on the solid electrolyte body so as to communicate with a measurement and a reference gas, respectively. The solid electrolyte body is formed by firing an unfired body of an oxygen-ion conductive solid electrolyte material containing a sitnering aid. The firing temperature is selected within a range defined by a permissible lowest sintering point of the unfired formed body, and an upper limit which is 60.degree. above the permissible lowest sintering point, whereby an amount of the sintering aid left on the surface of the first solid electrolyte body is smaller than that left within an interior structure of the solid electrolyte body, as viewed in a transverse cross sectional plane of the solid electrolyte body.

REFERENCES:
patent: 4183798 (1980-01-01), Esper et al.
patent: 4318770 (1982-03-01), Chakupurakal
patent: 4328294 (1982-05-01), Tanaka et al.
patent: 4542110 (1985-09-01), Nakada et al.

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