Magnetic structure, particularly permanent magnet for motor fiel

Details Magnetic structure, particularly permanent magnet for motor fiel Magnetic structure, particularly permanent magnet for motor fiel

1975-10-01

1978-08-29

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

310154, 335302, H01F 108

Patent

active

041107187

ABSTRACT:
To provide a magnet which has both the qualities of high remanence, or retentivity and coercive force, and is resistant to demagnetizing fields, the magnet is made in at least two zones of which the central or segmental zone is made of a magnetic material which has high remanence, whereas the end zone, or zones, is made of a magnetic material having high coercive force. This composite structure can be made by, for example, sequentially squeezing the different materials, in paste form, in a mold and then removing water, pressing, sintering and grinding the resulting structure.

REFERENCES:
patent: 2048161 (1936-07-01), Klaiber
patent: 3535200 (1970-10-01), Bergstom
patent: 3594599 (1971-07-01), West
patent: 3808514 (1974-04-01), Wesemeyer
patent: 3894525 (1975-07-01), Haubner

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