Solid electrolyte oxygen sensor and method of making same

Details Solid electrolyte oxygen sensor and method of making same Solid electrolyte oxygen sensor and method of making same

1979-07-09

1980-10-21

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

264 61, G01N 2758, C04B 3700

Patent

active

042292751

ABSTRACT:
Oxygen sensor with a disc type solid electrolyte has the disc sealed in a shrinkable ceramic tube by the pressure which is developed and the surface glazing which takes place as the tube is fired. The tube is preferably formed of forsterite which can shrink about 25% during firing, thus causing the tube to become slightly bulged out in the region of the disc due to the interference fit produced by the shrinkage. The porous electrodes on the top and bottom surfaces of the disc are preferably omitted from a small region near one edge of the top and bottom surfaces but are continued as a stripe or band down the edge from a diametrically opposite portion of each surface, the stripes and unelectroded areas associated with the respective surfaces being spaced to prevent electrical shorting. The disc stripes are pressure bonded during firing of the tube to a pair of spaced lead stripes on the inside tube surface.

REFERENCES:
patent: 4119513 (1978-10-01), Shum et al.
patent: 4123344 (1978-10-01), Davis

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