Iron-rare earth-boron permanent

Details Iron-rare earth-boron permanent Iron-rare earth-boron permanent

1986-03-17

1988-12-20

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

419 12, 419 23, H01F 100

Patent

active

047923679

ABSTRACT:
High energy product, magnetically anisotropic permanent magnets are produced by hot working overquenched or fine grained, melt-spun materials comprising iron, neodymium and/or praseodymium, and boron to produce a fully densified, fine grained body that has undergone plastic flow.

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patent: 4402770 (1983-09-01), Koon
Koon et al, Magnetic Properties of Amerphous and Crystallized (Fe.sub.0.82 B.sub.0.18).sub.0.9 Tb.sub.0.05 La.sub.0.05, Appl. Phys. Lett. vol. 39, no. 15, Nov. 15, 1981 pp. 840-842.
A Dictionary of Metallergy, 1958 pp. 256-257.
Sagawa et al., "New Material for Permanent Magnets on a Base of Nd and Fe," J. Appl. Phys. 55(6), 15 Mar. 1984, pp. 2083-2086 paper given Nov. 8-11, 1983.
Kabacoff et al. Thermal and Magnetic Properties of Amorphous Pr.sub.x (Fe.sub.0.8 B.sub.0.2).sub.-x, J. Appl. Phys., 53(3), Mar. 1982 pp. 2255-2257 paper given at conference Nov. 10-13, 1981.
Hadjipanayis et al., "Investigation of Crystalline Iron Platinum Nichol and Amorphous Rare Earth Iron Alloy for Permanent Magnets," Office of Naval Research, Dept. of Navy, Contract No. N00014-81-C-0752, Mar. 15, 1983.
Becker, "Surface Effects on Hysteresis Loop Shapes in High-Coercive-Force Crystallized Amorphous Alloys," IEEE Transactions on Magnetics, Vol. Mag-18, No. 6, Nov. 1982, pp. 1451-1452.
Koon et al, "Composition Dependence of the Coercive Force and Microstructure of Crystallized Amorphous (Fe.sub.x B.sub.1-x).sub.0.9 Tb.sub.0.5 La.sub.0.05 Alloys," IEEE Transactions on Magnetics, Vol. Mag-18, No.6, Nov. 1982, pp. 1448-1450.

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