Process of nitriding metal-containing materials

Details Process of nitriding metal-containing materials Process of nitriding metal-containing materials

1998-07-28

2000-08-22

Capossela, Ronald

Refrigeration

Processes

Treating an article

62 65, 62 78, 148577, F25D 1702

Patent

active

061053740

ABSTRACT:
A process for treating an article of metal containing material, the process in including subjecting the article to a deep cryogenic treatment at a temperature of -120.degree. F. or lower, subjecting the article to at most a partial tempering treatment, and then nitriding a surface of the article so as to form nitrides near a surface of the article.

REFERENCES:
patent: 3891477 (1975-06-01), Lance et al.
patent: 4482005 (1984-11-01), Voorhees
patent: 4739622 (1988-04-01), Smith
patent: 5259200 (1993-11-01), Kamody

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