Rare earth-iron-boron premanent magnets

Details Rare earth-iron-boron premanent magnets Rare earth-iron-boron premanent magnets

1985-06-14

1988-08-09

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148104, 419 12, 419 20, H01F 102

Patent

active

047625740

ABSTRACT:
Permanent magnets are prepared by a method comprising mixing a particulate rare earth-iron-boron alloy with a particulate rare earth oxide, aligning the magnetic domains of the mixture, compacting the aligned mixture to form a shape, and sintering the compacted shape.

REFERENCES:
patent: 3826696 (1974-07-01), Cech
patent: 3887395 (1975-06-01), Martin
patent: 3928089 (1975-12-01), Cech
patent: 4135953 (1979-01-01), Nagel et al.
patent: 4541877 (1985-09-01), Stadelmaier
A. L. Robinson, "Powerful New Magnet Material Found," Science, vol. 223, pp. 920-922 (1984).
M. Sagawa, S. Fujimura, N. Togawa, H. Yamamoto, and Y. Matsuura, "New Material for Permanent Magnets on a Base of Nd and Fe," Journal of Applied Physics, vol. 55, pp. 2083-2087 (1984).
M. Sagawa, S. Fujimura, H. Yamamoto, Y. Matsuura, and K. Hiraga, "Permanent Magnet Materials Based on the Rare Earth-Iron-Boron Tetragonal Compounds," IEEE Transactions on Magnetics, vol. MAG-20, pp. 1584-1589 (1984).

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