Permanent magnet and method for manufacturing the same

The present invention relates to a permanent magnet obtained by wet-mixing a Dy compound or a Tb compound with a magnet raw material to coat a surface of the magnet raw material with the Dy compound or the Tb compound, and sintering a green sheet obtained by mixing the resulting magnet raw material...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KUME KATSUYA, HORIO TOMOKAZU, OZEKI IZUMI, NAKAYAMA JUNICHI, FUKUDA YUUKI, HOSHINO TOSHINOBU
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The present invention relates to a permanent magnet obtained by wet-mixing a Dy compound or a Tb compound with a magnet raw material to coat a surface of the magnet raw material with the Dy compound or the Tb compound, and sintering a green sheet obtained by mixing the resulting magnet raw material with a resin binder and molding the resulting mixture. Since the present invention has the above-mentioned constitution, it becomes possible to sufficiently improve coercive force by Dy or Tb while decreasing the amount of Dy or Tb used. Further, it can be prevented that Dy or Tb is solid-solutionized in magnet particles to decrease residual magnetization.