Thermoplastic coated magnetic powder compositions and methods of

Details Thermoplastic coated magnetic powder compositions and methods of Thermoplastic coated magnetic powder compositions and methods of

1991-05-17

1993-03-30

Sluby, P. C.

Compositions

Magnetic

With wax, bitumen, resin, or gum

428407, 428412, 4284735, 428419, 428218, 428328, 75254, H01F 126

Patent

active

051981378

ABSTRACT:
An iron powder composition comprising an iron powder coated with a substantially uniform coating of a thermoplastic material and admixed with a boron nitride powder and a method of utilizing the mixture to produce a magnetic core component is provided. The iron powder mixture is formulated with up to about 1% by weight of boron nitride which reduces the stripping and sliding die ejection pressures during high temperature molding and also improves the permeability of the magnetic part over an extended frequency range.

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