Permanent magnetic material made of iron-rare earth metal alloy

Details Permanent magnetic material made of iron-rare earth metal alloy Permanent magnetic material made of iron-rare earth metal alloy

1995-06-06

1998-09-01

Sheehan, John

Compositions

Magnetic

With wax, bitumen, resin, or gum

148301, 420 83, 420416, 420128, C04B 3564, H01F 1057

Patent

active

058007288

ABSTRACT:
An iron-rare earth metal permanent magnetic composition, comprising predominant phase having a body-centered tetragonal structure, and consisting essentially of an iron-based alloy having a composition represented by the formula:

REFERENCES:
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patent: 4840684 (1989-06-01), Fujimura et al.
patent: 4849035 (1989-07-01), Stadelmaier et al.
patent: 5085716 (1992-02-01), Fuerst et al.
Yang et al., "Magnetic and Crystallographic Properties of Novel Fe-Rich Rare-Earth Nitrides of the Type RTiFe.sub.11 N.sub.1.delta. (Invited)," J. Appl. Phys., vol. 70, No. 10, pp. 6001-6005, Nov. 15, 1991.
Sagawa et al., "Magnetic Properties of Rare-Earth-Iron-Boron Permanent Magnet Materials," J. Appl. Phys., vol. 57, No. 1, pp. 4094-4096, Apr. 15, 1985.
Fidler et al., Electron Microscopy of Nd-Fe-B Based Magnets, Journal of Magnetism and Magnetic Materials, vol. 80, pp. 48-56, 1989.
Coey et al., "Improved Magnetic Properties by Treatment of Iron-Based Rare Earth Intermetallic Compounds in Ammonia," Journal of Magnetism and Magnetic Materials, vol. 87, pp. L251-L254, 1990.
Otani et al, "Metal Bonded Sm.sub.2 Fe.sub.17 N.sub.3-.delta. Magnets", J of Appl Phys. 69(9) May 1, 1991, pp. 6735-6737.
Schnitzke et al, "High Coercivity in Sm.sub.z Fe.sub.17 N.sub.x Magnets" Appl. Phys. Lett 57(26), Dec. 24, 1990, pp. 2853-2855.

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