Rare earth bonded magnet and rare earth-iron-boron type magnet a

Details Rare earth bonded magnet and rare earth-iron-boron type magnet a Rare earth bonded magnet and rare earth-iron-boron type magnet a

1997-08-06

1999-02-16

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

252 6251, H01H 6702

Patent

active

058725016

ABSTRACT:
A rare earth bonded magnet obtained by mixing two types of magnetic powders (A) and (B) in the present invention has a high residual magnetic flux density (Br), a large intrinsic coercive force (iHc) and a large maximum energy product ((BH)max) in spite of a low rare earth element content, and shows an excellent rust preventability. A rare earth-iron-boron type magnet alloy of the present invention has a residual magnetic flux density (Br) as high as not less than 10 kG, an intrinsic coercive force (iHc) as large as not less than 3.5 kOe and a large maximum energy product ((BH)max) and which has an excellent rust preventability.

REFERENCES:
patent: 5230751 (1993-07-01), Endoh et al.
patent: 5449417 (1995-09-01), Shimizu et al.
Patent Abstracts of Japan Publication No. 08124730 publication date 17-05-96 Rare Earth Resin Magnet Having Low Coercive Force.

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