Method to apply multiple layers, including an electrode layer, o

Details Method to apply multiple layers, including an electrode layer, o Method to apply multiple layers, including an electrode layer, o

1979-11-29

1981-10-20

Smith, Ronald H.

Coating processes

Electrical product produced

Metal coating

427123, 4271262, 4271264, 4271265, 427261, 427269, 4273761, 4273762, 4273763, 4273766, 4274193, 204195S, B05D 512

Patent

active

042961483

ABSTRACT:
To improve response time and provide an electrode which has good adhesion to a solid electrolyte body, typically of zirconium, to be used in lambda sensors or polarographic current limit sensors, and additionally enhance the loading capability thereof, the pre-sintered or fully sintered solid electrolyte body, typically of zirconium dioxide, has an electrode layer applied thereto on which, in advance of sintering thereof, a cover layer is applied which, when sintered, develops pores. The cover layer is a ceramic material, sintered together with the electrode on the solid electrode body. This results in higher loading capability and decrease in response temperature to about 250.degree. C. The sensors can be used as lambda sensors and polarographic current sensors, to determine oxygen content in exhaust gases, typically for automotive engines, as well as in high-temperature fuel cells, high-temperature batteries, and high-temperature electrolysis cells.

REFERENCES:
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patent: 3503809 (1970-03-01), Spacil
patent: 3645875 (1972-02-01), Record et al.
patent: 3843400 (1974-11-01), Radford et al.
patent: 3935089 (1976-01-01), Togawa et al.
patent: 3978006 (1976-08-01), Topp et al.
patent: 4005001 (1977-01-01), Pebler
patent: 4021326 (1977-05-01), Pollner et al.
patent: 4096648 (1978-06-01), Matsumoto et al.

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