(NH_3+H_2)混合ガスによる異方性Sm-Fe-N系磁石の作製およびその磁気特性 Preparation of Anisotropic Sm-Fe-N Magnetic Powders Nitrided in (NH_3+H_2) Mixed Gas and Their Magnetic Properties

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Using two kinds of Sm<SUB>2</SUB>(Fe, Mn)<SUB>17</SUB> powders whose grain sizes are 32-74 μm and 74-100 μm, the nitriding behaviour of Sm<SUB>2</SUB>(Fe, Mn)<SUB>17</SUB> in a mixed-gas atmosphere of ( NH<SUB>3</SUB>+H<SUB>2</SUB>) and their magnetic properties have been investigated . Sm<SUB>2</SUB>(Fe, Mn)<SUB>17</SUB>N<SUB>x</SUB>specimens with 0<X<6 were fabricated in both of the above mentioned two cases . Though the coercivity increased with increasing X, the saturation of magnetization tended to decrease with increasing X in both of two specimens . The (BH)<SUB>max</SUB> was highest at X=4.8 in case of the specimen using 32-74 μm powder, and at X=4.3 in case of the specimen using 74-100 μm powder ; the value of (BH)<SUB>max</SUB> was 85.20kJ/m<SUP>3</SUP> in the former and 63.05kJ/m<SUP>3</SUP> in the latter. The magnetic anisotropy was also recognized in both of the two specimens. These magnetic properties were confirmed to be related to the grain refinement observed during nitriding process.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 43(5), 624-628, 1996-05-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002012207
  • 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
    3967172
  • 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  NDL  J-STAGE 
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