Thick-film gas sensor of a laminar structure and a method of pro

Details Thick-film gas sensor of a laminar structure and a method of pro Thick-film gas sensor of a laminar structure and a method of pro

1988-12-08

1990-03-20

Williams, Hezron E.

Measuring and testing

Gas analysis

By vibration

73 23, G01N 2712

Patent

active

049090666

ABSTRACT:
A gas sensor has a ceramic substrate carrying a pair of electrodes embedded therein, which substrate has an opening bored at a surface portion thereof so as to expose tip portions of the electrodes. A thick gas-sensitive film is provided at the opening in such a manner that a gap between the electrode tip portions is filled by the gas-sensitive film while the metallic material of the electrodes is caused to precipitate on the boundary between the electrodes and the gas-sensitive film, so that the performance characteristics of the sensor is stabilized and its durability is improved.

REFERENCES:
patent: 4221827 (1980-09-01), Parry et al.
patent: 4225634 (1980-09-01), Takaka et al.
patent: 4354912 (1982-10-01), Friese
patent: 4413502 (1983-11-01), Otha et al.

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