Method of making magnets by polymer-coating magnetic powder

Details Method of making magnets by polymer-coating magnetic powder Method of making magnets by polymer-coating magnetic powder

1972-11-03

1976-01-20

Satterfield, Walter R.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148 3157, 148108, 264DIG58, H01F 102

Patent

active

039335364

ABSTRACT:
Magnets are produced by dissolving in a solvent organic polymer which is a binder for magnetic powder, adding a magnetic powder to the solution, then adding to the solution a vehicle in which the polymer is insoluble. The vehicle is added until the polymer has precipitated onto the magnetic particles. These coated particles are then dried and hot pressed within an orienting magnetic field to produce the magnet.

REFERENCES:
patent: 1982689 (1934-12-01), Polydoroff
patent: 3726664 (1973-04-01), Parker et al.
patent: 3849213 (1974-11-01), Baermann

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