Ferrous alloy with Fe-Al diffusion layer and method of making th

Details Ferrous alloy with Fe-Al diffusion layer and method of making th Ferrous alloy with Fe-Al diffusion layer and method of making th

1996-05-20

1999-11-09

Jones, Deborah

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

291962, B32B 1501

Patent

active

059810890

ABSTRACT:
A ferrous alloy is formed with a Fe--Cr stainless steel having a Vickers hardness of 400 or more as a substrate and a Fe--Al diffusion layer having a thickness of 2 to 50 .mu.m. The diffusion layer contains at least 90 vol % of an intermetallic compound of Al and Fe relative to a total volume of the diffusion layer. The Al content included within a depth of at least 2 .mu.m of the diffusion layer is 35 to 65% by weight based upon total weight of a region of the diffusion layer ranging up to the thickness of at least 2 .mu.m. It is preferred to use as the substrate a precipitation-hardening stainless steel comprising 66 to 81.9 wt % of Fe, 15 to 20 wt % of Cr, 3 to 13 wt % of Ni, and one element selected from 3 to 6 wt % of Cu, 0.5 to 2 wt % of Al, and 0.01 to 0.2 wt % of a total of C and N, or a high carbon stainless steel comprising 73 to 89.9 wt % of Fe, 10 to 19 wt % of Cr, 0.1 to 1.2 wt % of C, and less than 3 wt % of Ni. The ferrous alloy may be used for sliding parts such as gears or bearings, and blades of electric shavers or hair clippers.

REFERENCES:
patent: 3640755 (1972-02-01), Barth
patent: 3762885 (1973-10-01), Speirs et al.
patent: 4141760 (1979-02-01), Baldi
patent: 4535034 (1985-08-01), Zaizen et al.
patent: 4655852 (1987-04-01), Rallis
patent: 4891274 (1990-01-01), Higuchi et al.
patent: 4931421 (1990-06-01), Shibata
patent: 5017544 (1991-05-01), Ikegami et al.
Sasaki Masahiro et al., "Influence of the Diffusion Coated Layer of A1 . . . ", J. Surface Finishing Society of Japan (1995), vol. 46 (Abstract), pp. 162-169, no month 1995.
Oki S. et al., "Formation of Alloy Phases by Reaction-Diffusion . . . ", J. Japan Institute of Metals (1994), vol. 58, (Abstract), pp. 966-972, Aug. 1994.
European Search Report, Aug. 19, 1996.
Japanese Patent Office, Patent Abstracts Of Japan, 1992, p. 1, Publication number: 04250995 A (English).
Japanese Patent Office, Patent Abstracts Of Japan, 1993, p. 1, Publication number: 05283149 A (English).

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