Permanent magnet

Details Permanent magnet Permanent magnet

1989-02-16

1990-06-19

Sheehan, John P.

Metal treatment

Stock

Magnetic

420 83, 420121, H01F 104

Patent

active

049350757

ABSTRACT:
A permanent magnet essentially consists of 10 to 40% by weight of R, 0.1 to 8% by weight of boron, 13% by weight or less of gallium and iron, where R is at least one component selected from the group consisting of yttrium and the rare-earth elements.
The magnet having this composition has a high coercive force iHC and a high residual magnetic flux density and therefore has a high maximum energy product.

REFERENCES:
patent: 4533408 (1985-08-01), Koon
patent: 4664724 (1987-05-01), Mizoguchi et al.

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