Chemistry: electrical and wave energy – Processes and products – Coating – forming or etching by sputtering
Patent
1985-07-24
1987-04-07
Tung, T.
Chemistry: electrical and wave energy
Processes and products
Coating, forming or etching by sputtering
204421, 204424, 20419212, 427124, 427125, 4273722, 427377, 427380, 4273835, C23C 1418, B05D 500, B05D 302, G01N 2746
Patent
active
046558926
ABSTRACT:
An oxygen sensor for sensing the oxygen content of an exhaust gas from an automotive engine and a process for producing the same, which sensor is less sensitive to lead poisoning than conventional sensors. In the inventive sensor, a first platinum electrode is formed on the side of a solid electrolyte body exposed to the gas to be detected, and a second electrode is formed on the other side of the electrolyte body. The first electrode comprises a platinum layer and a layer of at least one of rhodium and palladium. Preferably, the layer of rhodium or palladium has a thickness of 10 to 5,000 .ANG..
REFERENCES:
patent: 4186071 (1980-01-01), Romine et al.
patent: 4199425 (1980-04-01), Sinkevitch
patent: 4225559 (1980-09-01), Achari et al.
patent: 4253934 (1981-03-01), Berg et al.
patent: 4294668 (1981-10-01), Young
Hasegawa Hideo
Kimura Mareo
Satta Kozo
Kabushiki Kaisha Toyota Chuo Kenkyusho
Tung T.
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