Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
1987-10-09
1989-08-15
Rutledge, L. Dewayne
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
148105, 148121, H01F 109
Patent
active
048571180
ABSTRACT:
Permanent magnets are manufactured by grinding a magnetic phase having the composition RE.sub.2 (Fe, Co).sub.14 B with a non-magnetic phase, orienting it magnetically, densifying and then sintering it. The non-magnetic phase may be a hydride of either a rare earth metal or alloy thereof. The second phase must have a melting point lower than the magnetic phase.
REFERENCES:
patent: 3655464 (1972-04-01), Benz
patent: 4663066 (1987-05-01), Fruchart et al.
patent: 4762574 (1988-08-01), Ghandehari
Turk Gijsbertus W.
Van Mens Reinoud
Rutledge L. Dewayne
Spain Norman N.
U.S. Philips Corporation
Wyszomierski George
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