Furnace and method with sensor

Details Furnace and method with sensor Furnace and method with sensor

1980-02-04

1981-09-22

Rutledge, L. Dewayne

Metallurgical apparatus

With control means responsive to sensed condition

With analyzer or computation means

266251, 432 37, 204195S, 73 23, C21B 724

Patent

active

042905869

ABSTRACT:
Oxygen sensor comprising solid oxygen-ion-conducting electrolyte with a platinum group metal film electrode contacts and monitors nonoxidizing or reducing gas atmosphere in a metal heat treatment (gas carburizing) furnace after a getter of the same platinum group metal as in the film electrode removes platinum group metal contaminants from such atmosphere before it contacts the electrode. Getter is held in a thin-walled, multi-passaged honeycomb body.

REFERENCES:
patent: 3645875 (1972-02-01), Record et al.
patent: 3935089 (1976-01-01), Togawa et al.
patent: 3978006 (1976-08-01), Topp et al.
patent: 4021326 (1977-05-01), Pollner et al.
patent: 4097353 (1978-06-01), Kishida et al.
patent: 4121989 (1978-10-01), Shum et al.
patent: 4132615 (1979-01-01), Linder et al.
patent: 4140611 (1979-02-01), Yaegashi et al.
patent: 4164462 (1979-08-01), Ichikawa et al.
patent: 4240890 (1980-12-01), Watanabe et al.
Metals Handbook, 8th Edition, vol. 1, pp. 1178-1190 published 1961 by American Society for Metals.
R. G. H. Record, reprint from Instrument Practice, Mar. 1970, published in Great Britian.
R. G. H. Record, reprint from Metallurgia and Metal Forming, Dec. 1972/Jan. 1973, published in Great Britian.

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