Permanent magnet having high corrosion resistance

Details Permanent magnet having high corrosion resistance Permanent magnet having high corrosion resistance

1991-09-13

1993-08-10

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Composite

Of metal

428900, B32B 1504

Patent

active

052347710

ABSTRACT:
A sintered or bonded permanent magnet formed from a material consisting mainly of iron, particularly a Nd-Fe-B alloy, and having a high corrosion resistance has a surface coated with a resin obtained by the polycondensation of tannic acid, phenols and aldehydes; a bonded magnet is also made from a powder of any such material composed of particles coated with any such resin.

REFERENCES:
Patent Abstracts of Japan, vol. 13, No. 240 (E-757) (3588), Jun. 6, 1989 and JP-1 044 006 (Sieko Epson Corp), Feb. 16 1989.

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