Ferrite powder for bonded magnets, method for producing the same and ferrite bonded magnet
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United States of America Patent
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Jun 2, 2020
Grant Date -
Oct 26, 2017
app pub date -
Sep 30, 2015
filing date -
Sep 30, 2014
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Abstract
A ferrite powder for bonded magnets capable of producing a ferrite bonded magnet having high BHmax, and excellent in fluidity when converted to a compound, and having a high p-iHc value, and a method for producing the same, and a ferrite bonded magnet using the ferrite powder for bonded magnets, wherein an average particle size of particles obtained by a dry laser diffraction measurement is 5 μm or less; a specific surface area is 1.90 m2/g or more and less than 2.80 m2/g; a compression density is 3.50 g/cm3 or more and less than 3.78 g/cm3, and a compressed molding has a coercive force of 2300 Oe or more and less than 2800 Oe.
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