放電プラズマ法(SPS)を用いたFe-Cr-Co焼結磁石の微細組織と磁気特性 Microstructures and Magnetic Properties of Sintered Fe-Cr-Co Type Magnets using Spark Plasma Sintering

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The objective of this study was to investigate differences in microstructures and magnetic properties on the Fe-Cr-Co type magnets due to the processing variables, such as initial powders and sintering temperatures of spark plasma sintering (SPS). The Fe-Cr-Co powders with a grain under 80μm were prepared by spray conversion process. The sintered Fe-Cr-Co compacts achieve high relative densities (about 98%) by process conditions with 39 MPa at 1223 K for 7 minutes using spark plasma sintering. The stable high magnetic hardening of the compacts was performed after heat treating with the miscibility gap, producing modulated structures consisting of two phases an iron-rich phase (a<SUB>1</SUB>) and chromium-rich phase (a<SUB>2</SUB>). According to above results, The SPS is recognized to be superior on sintering conditions (in shorter time and at lower temperature) to the conventional furnaces. So that Spark plasma sintering has a high possibility of being applied as a method of sintering Fe-Cr-Co magnet in the near future.

収録刊行物

  • 粉体および粉末冶金

    粉体および粉末冶金 51(7), 554-558, 2004-07-15

    一般社団法人 粉体粉末冶金協会

参考文献:  5件中 1-5件 を表示

被引用文献:  1件中 1-1件 を表示

  • 粉末の成形加工

    粉体加工成形プロセス分科会

    塑性と加工 = JOURNAL OF THE JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY 46(535), 767-770, 2005-08-25

    参考文献117件

各種コード

  • NII論文ID(NAID)
    10013343839
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    7047342
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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