Gas sensor element containing a getter

Details Gas sensor element containing a getter Gas sensor element containing a getter

2007-01-02

2007-01-02

Olsen, Kaj K. (Department: 1753)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C073S023320

Reexamination Certificate

active

10308173

ABSTRACT:
The present invention provides a gas sensor element and its production method, in which poisons are trapped in a porous protective layer to prevent them from reaching a measured gas side electrode, thereby making it possible to maintain a stable sensor output over a long period of time.The gas sensor element of the present invention is composed of a solid electrolyte10, and a measured gas side electrode12that contacts a measured gas and a reference gas side electrode11that contacts a reference gas provided on said solid electrolyte10; wherein, the above measured gas side electrode12is covered with a porous protective layer14composed of a heat-resistant metal oxide containing a getter, and the above getter is an alkaline silicate.

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Roberts et al, Encyclopedia of Minerals, 2ndEdition, 1990, pp. 199, 709-711, 881 and 882.

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