Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1979-01-19
1980-01-29
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
252472, C23G 102, G01N 2758
Patent
active
041860713
ABSTRACT:
An activated oxygen gas sensor element having an increased voltage output under rich gas conditions, short switching response and reduced internal resistance is produced by chemically treating the inner conductive catalyst electrode of the sensor element with an inorganic acid or acid salt and current activating the outer conductive catalyst electrode by applying a direct current to the sensor element, with the outer electrode as a cathode, while the outer electrode is at an elevated temperature and in the presence of a neutral or inert atmosphere. Air may be used as the atmosphere in contact with the outer electrode during the current activation provided that the sensor is subjected to a subsequent reheating step to provide the desired results.
REFERENCES:
patent: 4136000 (1979-01-01), Davis et al.
J. E. Bauerle, J. Phys. Chem. Solids, pp. 2657-2670, vol. 30 (1969).
Bode James D.
Davis Donald C.
Romine Donald J.
Tien Tseng Y.
Woodruff Phillip R.
Bendix Autolite Corporation
Eifler Raymond J.
Kaplan G. L.
Kratz, Jr. William G.
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