Furnace and method with sensor

Details Furnace and method with sensor Furnace and method with sensor

1981-04-06

1982-12-07

Sheehan, John P.

Metal treatment

Compositions

Heat treating

148 203, 73 23, C21D 148

Patent

active

043625800

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: 4145232 (1979-03-01), Solomon
patent: 4168186 (1979-09-01), Limque et al.
Beach, N. "Practical Experience in the Control of Heat Treatment Atmospheres using Oxygen Probe," 5th Industrial Process Heating Conference, Birmingham 1972.

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