Process of the production of an atmosphere for the thermal treat

Details Process of the production of an atmosphere for the thermal treat Process of the production of an atmosphere for the thermal treat

1991-10-17

1993-09-07

Kastler, Scott

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

148231, C01B 2104, C21D 176

Patent

active

052425096

ABSTRACT:
The thermal treatment atmosphere is obtained by catalytic reaction of an impure mixture of nitrogen, advantageously obtained by permeation or adsorption, and hydrocarbon, the catalytic reaction being carried out at a temperature between 400.degree. and 900.degree. C., typically between 500.degree. and 800.degree. C., with a noble metal base catalyst, typically platinum or palladium on alumina support. The reaction may be carried out in a reactor placed inside or outside the furnace.

REFERENCES:
"Commercial Nitrogen-The Basis for a Universal Controlled Atmosphere," Metal Science and Heat Treatment, vol. 20, Nos. 5/6, May 6, 1978, pp. 377-381.

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