Oxygen sensor having thin film electrolyte

Details Oxygen sensor having thin film electrolyte Oxygen sensor having thin film electrolyte

1975-09-15

1977-08-09

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204192C, G01N 2746, G01N 2758

Patent

active

040409295

ABSTRACT:
Oxygen sensor incorporating a thin film electrolyte such as yttria stabilized zirconia sputtered onto a substrate produces an electrical signal in response to differences in oxygen partial pressures. The electrical signal changes rapidly enough for useful operation at temperatures which are substantially lower than those required by conventional oxygen sensors having a rigid, self-supporting thimble, tubular, or disc type electrolyte. For example, rapidly responding signals have been generated at temperatures below 200.degree. C whereas state of the art devices such as those used for sensing exhaust gases in automotive vehicles require temperatures higher than about 400.degree. C.

REFERENCES:
patent: 3378478 (1968-04-01), Kolodney et al.
patent: 3578578 (1971-05-01), Von Krusenstierna
patent: 3619381 (1971-11-01), Fitterer
patent: 3719576 (1973-03-01), Macur
patent: 3768259 (1973-10-01), Carnahan et al.
patent: 3914169 (1975-10-01), Horowitz

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