Oxygen sensor element

Details Oxygen sensor element Oxygen sensor element

1997-05-21

1999-09-07

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204424, 204426, 204428, 204429, 427 58, 427125, 427229, 4274431, G01N 27407

Patent

active

059482257

ABSTRACT:
An oxygen sensor element includes a solid electrolyte having cavities on a surface thereof and an electrode formed on the surface of the solid electrolyte. In a method of producing the oxygen sensor element, a solution containing a noble metal compound for nucleus formation is first applied to an electrode forming portion of the solid electrolyte to form a coating film. Then, the coating film is heat-treated to form a nucleus forming portion where noble metal nuclei are deposited. Subsequently, metal plating is applied to the nucleus forming portion to form a plating film deeply entering the cavities. Thereafter, the plating film is burned to form the electrode deeply entering the cavities.

REFERENCES:
patent: 3978006 (1976-08-01), Topp et al.
patent: 4199425 (1980-04-01), Sinkevitch
patent: 4225634 (1980-09-01), Tanaka et al.
patent: 4265724 (1981-05-01), Haecker et al.
patent: 5472591 (1995-12-01), Saito et al.
patent: 5716507 (1998-02-01), Tanaka et al.

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