Method for the gaseous nitriding of ferrous-based components

Details Method for the gaseous nitriding of ferrous-based components Method for the gaseous nitriding of ferrous-based components

1978-05-23

1980-12-02

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

148 315, C23C 914

Patent

active

042369428

ABSTRACT:
A ferrous-based component is nitrided by subjecting the heated component to an atmosphere of ammonia and then to an atmosphere of an inert gas. The undesirable nitrogen-rich layer which was hitherto produced at the surface of the component in nitriding is reduced or eliminated in the process of the invention.

REFERENCES:
patent: 1647847 (1927-11-01), Wills
patent: 3219494 (1965-11-01), Hartner et al.
patent: 3265541 (1966-08-01), Elias
patent: 3377214 (1968-04-01), Woodbridge et al.
patent: 3399085 (1968-08-01), Knechtel et al.
patent: 3998666 (1976-12-01), Cuddy et al.
patent: 4011111 (1977-03-01), Hook
patent: 4046601 (1977-09-01), Hook

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