Magnets having improved corrosion resistance

Details Magnets having improved corrosion resistance Magnets having improved corrosion resistance

1989-06-01

1992-02-18

Silverberg, Sam

Metal treatment

Stock

Magnetic

G11B 570

Patent

active

050890662

ABSTRACT:
Fe-B-R type permanent magnet is produced by forming an anticorrosive coating film layer on a Fe-B-R base permanent magnet material body by means of vapor deposition to thereby improve the corrosion resistance thereof.
The anticorrosive thin film is formed of metal, oxides, nitrides, carbides, borides, silicides, composite compositions thereof, or a mixture thereof. Additionally blasting, shot peening, heat treatment for forming an interdiffusion layer, and/or resin impregnation may be applied.

REFERENCES:
patent: 4253886 (1981-03-01), Aonuma
patent: 4865915 (1989-09-01), Okonogi

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