Manufacture of corrosion resistant components

Details Manufacture of corrosion resistant components Manufacture of corrosion resistant components

1988-07-06

1989-11-21

Roy, Upendra

Metal treatment

Compositions

Heat treating

148277, C23C 834, C23C 1108

Patent

active

048819832

ABSTRACT:
A steel component is provided with a black wear and corrosion resistant finish by the steps of forming an epsilon iron nitride or carbonitride layer, bringing the component to gas oxidation temperature and oxidizing by a gaseous medium to form a dense black coating, and carrying out a surface finish treatment.

REFERENCES:
patent: 4035200 (1977-07-01), Valentijn
patent: 4131492 (1978-12-01), Fushimi et al.
patent: 4448612 (1984-05-01), Ebert et al.
patent: 4496401 (1985-01-01), Dawes et al.
patent: 4596611 (1986-06-01), Dawes et al.
patent: 4702779 (1987-10-01), Madsac et al.

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