Electrical contact material comprising a cobalt-nickel-iron...

Details Electrical contact material comprising a cobalt-nickel-iron... Electrical contact material comprising a cobalt-nickel-iron...

2005-08-18

2009-08-25

Yee, Deborah (Department: 1793)

Metal treatment

Stock

Ferrous

C148S408000, C148S419000, C148S425000, C420S095000, C420S440000, C420S581000, C439S887000

Reexamination Certificate

active

07578893

ABSTRACT:
A material for electrical contacts comprising a martensitic cobalt-nickel-iron alloy with a high strength, a high bendability and a high electrical conductivity, with a cobalt content of 12.0≦Co≦60.0% by weight, a nickel content of 10.0≦Ni≦36.0% by weight, remainder iron and an impurity content of less than 0.2 atomic percent, with a martensite temperature Ms of 75° C.≦Ms≦400° C. in the case of the martensitic variant and −50° C.≦Ms≦25° C. in the case of the variant which is naturally hard as a result of cold-forming.

REFERENCES:
patent: 5026435 (1991-06-01), Nakamura et al.
patent: 5147470 (1992-09-01), Nakamura et al.
patent: 5246511 (1993-09-01), Nakamura et al.
patent: 6221183 (2001-04-01), Sato et al.
patent: 6776855 (2004-08-01), Ueda et al.
patent: 1406096 (1975-09-01), None
patent: 56-5950 (1981-01-01), None
patent: 58-83124 (1983-05-01), None
International Search Report; PCT/DE2004/000309; 4 pp., Aug. 31, 2004.
International Preliminary Examination Report; PCT/DE2004/000309; 6 pp., Jan. 17, 2005.
Keil, Albert, et al.; Werkstoffe für elektrische Kontakte; Springer-Verlag; 3 pp., 1960.
Tanaka, Minoru, et al.; On the Isothermal Age-Hardening of Fe-Ni-Co Marensitic Alloys; Bulletin of the Tokyo Institute of Technology, No. 112; pp. 49-60.
Burger, E.E.; Fernico From Metal Powders; General Electric Review, pp. 22-24, Dec. 1946.
Magee, C.L., et al.; On the Volume Expansion Accompanying the F.C.C. to B.C.C. Transformation in Ferrous Alloys; ACTA Metallurgica, vol. 20, pp. 1031-1043, Aug. 1972.

Affiliated with

Also associated with

Rating

Electrical contact material comprising a cobalt-nickel-iron... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrical contact material comprising a cobalt-nickel-iron..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical contact material comprising a cobalt-nickel-iron... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4059575