金型潤滑温間成形法により作製した高密度鉄焼結体の磁気特性と焼結体組織 Magnetic Properties and Microstructure of High Density Sintered Iron by Warm Compaction Using Die Wall Lubrication

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Sintered Iron was one of good soft magnetic materials. However, its magnetic flux density was smaller than those of wrought magnetic iron. The small magnetic flux density was caused by low sintered density. In order to increase the sintered density, we developed a new warm compaction technique using die wall lubrication (WC-DWL) with lithium stearate. According to the method, very high-density of sintered body could be fabricated. Pure iron powder compacted at 1176 MPa and sintered at 1523 K had properties as follows; sintered density=7.76 Mg/m<SUP>3</SUP>, μ<SUB>m</SUB>=5300, B<SUB>160</SUB>=1.16 T, B<SUB>240</SUB>=1.28 T, B<SUB>400</SUB>=1.40 T, B<SUB>2k</SUB>=1.60T, and <SUB>b</SUB>H<SUB>c</SUB>=110A/m. Some of the sintered iron showed anisotropic dimensional change and anisometric microstructure, which were linked to abnormal grain growth up to several mm in length. This anomaly was the more pronounced the higher the green density of the specimens was.

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), 542-547, 2004-07-15

    一般社団法人 粉体粉末冶金協会

参考文献:  14件中 1-14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)
    10013343814
  • 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
    7047318
  • 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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