Soft magnetic powder
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United States of America Patent
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May 29, 2012
Grant Date -
Feb 18, 2010
app pub date -
Dec 6, 2007
filing date -
Dec 6, 2007
priority date (Note) -
Withdrawn
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Abstract
A powder magnetic core is provided for operating at high frequencies that is obtained by pressure forming an iron-based magnetic powder covered with an insulation film, which has a specific resistance more than 1000, preferably more than 2000, and most preferably more than 3000 μΩm, and a saturation magnetic flux density B above 1.5, preferably above 1.7, and most preferably above 1.9 (T). A method for the preparation of such cores as well as a powder which is suitable for the preparation also are provided.
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