Method of making ND-FE-b sintered magnets with DY or TB

Method of making ND-FE-b sintered magnets with DY or TB

  • CN 102,592,818 A
  • Filed: 01/13/2012
  • Published: 07/18/2012
  • Est. Priority Date: 01/14/2011
  • Status: Active Application
First Claim
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1. method of making permanent magnet comprises:

  • First alloy powder with required composition is provided, and said first alloy powder comprises neodymium, iron and boron;

    Utilize dysprosium, disprosium alloy, terbium, or terbium alloy is coated with said first alloy powder makes the dysprosium that said first alloy powder has, terbium or the surface concentration of the two surpass dysprosium, terbium or the bulk phase concentration of the two;

    AndUse powder metallurgical technique to form permanent magnet by the alloy powder of coating, said permanent magnet has dysprosium therein, terbium or the uneven distribution of the two.

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