Thermoplastic coated magnetic powder compositions and methods of making same
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United States of America Patent
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Aug 6, 1996
Issued Date -
N/A
app pub date -
Dec 15, 1994
filing date -
Jun 12, 1989
priority date (Note) -
Expired
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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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