Combustible gas sensor

Details Combustible gas sensor Combustible gas sensor

1980-07-01

1982-11-16

Albritton, C. L.

Electrical resistors

Resistance value responsive to a condition

Gas, vapor, or moisture absorbing or collecting

422 94, H01L 4700

Patent

active

043597092

ABSTRACT:
A combustible gas detecting element, the sensitive element of which has at least one material selected from the group consisting of gamma-type ferric oxide (.gamma.-Fe.sub.2 O.sub.3) and alpha-type ferric oxide (.alpha.-Fe.sub.2 O.sub.3) and has a microstructure with an average grain size smaller than 0.5 micrometers and a porosity of from 35 to 85%. The sensitivity is increased by adding at least one material selected from a group consisting of tin (Sn) and zinc (Zn) in a ratio from 0.5 to 70 mol %, based on stannic oxide (SnO) and zinc oxide (ZnO) relative to the ferric oxide component. The element is manufactured from fine particles obtained by coprecipitating metallic ions from a solution containing Fe ions and at least one member selected from the group consisting of Sn ions and Zn ions, and the fine particles are pressed and then sintered or are formed into a paste, printed on a substrate and then sintered.

REFERENCES:
patent: 3251654 (1966-05-01), Palmer
patent: 3695848 (1972-10-01), Taguchi
patent: 3886785 (1975-06-01), Stadler et al.
patent: 3952567 (1976-04-01), Shinagawa et al.
patent: 3955929 (1976-05-01), Kawakami et al.
patent: 3999947 (1976-12-01), Mihara et al.
patent: 4001757 (1977-01-01), Sato et al.
patent: 4017792 (1977-04-01), Heiland et al.
patent: 4097353 (1978-06-01), Kishida et al.
patent: 4194994 (1980-03-01), Baresel et al.

Affiliated with

Also associated with

Rating

Combustible gas sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Combustible gas sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combustible gas sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1437954