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Method for Producing Soft Magnetic Metal Powder Coated With Mg-Containing Oxide Film and Method for Producing Composite Soft Magnetic Material Using Said Powder

  • US 20080003126A1
  • Filed: 09/06/2005
  • Published: 01/03/2008
  • Est. Priority Date: 09/06/2004
  • Status: Abandoned Application
First Claim
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1. A method for producing a soft magnetic metal powder coated with a Mg-containing oxide film, comprising the steps of:

  • subjecting a soft magnetic metal powder to oxidation treatment to provide a raw powder material;

    adding and mixing a Mg powder with said raw powder material to obtain a mixed powder; and

    heating said mixed powder at a temperature of 150 to 1,100°

    C. in an inert gas or vacuum atmosphere under a pressure of 1×

    10

    12
    to 1×

    10

    1
    MPa, thereby obtaining a soft magnetic metal powder coated with a Mg-containing oxide film.

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