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Method for the production of magnet cores, magnet core and inductive component with a magnet core

  • US 8,287,664 B2
  • Filed: 07/11/2007
  • Issued: 10/16/2012
  • Est. Priority Date: 07/12/2006
  • Status: Expired due to Fees
First Claim
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1. A method for the production of a magnet core, comprising:

  • producing from an amorphous soft magnetic strip at least one coarse-grain powder fraction having particle diameters between 70 and 200 μ

    m;

    producing from a nanocrystalline soft magnetic strip made of an alloy capable of nanocrystallisation at least one fine-grain powder fraction having particle diameters between 20 and 63 μ

    m;

    mixing of the coarse- and fine-grain powder fractions to produce a powder mixture with a multi-modal particle size distribution, wherein the particles of the coarse-grain particle fraction have an amorphous structure and the particles of the fine-grain powder fraction have a nanocrystalline structure;

    pressing of the multi-modal powder mixture to produce a magnet core.

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