Method of nitriding steel utilizing fluoriding

Details Method of nitriding steel utilizing fluoriding Method of nitriding steel utilizing fluoriding

1991-07-10

1993-10-19

Andrews, Melvyn J.

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

148232, 148318, C23C 834

Patent

active

052541819

ABSTRACT:
This invention relates to a method for forming a uniform, deep nitride layer on and in steel works at low cost, wherein a steel work is fluorided in heated condition in an atmosphere of a mixed gas composed of fluorine gas and inert gas and, then, nitrided in heated condition in an atmosphere of nitriding gas.

REFERENCES:
patent: 2851387 (1958-09-01), Low
patent: 4975147 (1990-12-01), Tahara, I et al.
patent: 5013371 (1991-05-01), Tahara, II et al.
patent: 5114500 (1992-05-01), Tahara, II et al.

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