Bulk Glassy Fe-Ga-P-C-B-Si Alloys with High Glass-Forming Ability, High Saturation Magnetization and Good Soft Magnetic Properties

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The effect of Si addition on the glass-forming ability and magnetic properties for the Fe<SUB>77</SUB>Ga<SUB>3</SUB>P<SUB>12−<I>x</I></SUB>C<SUB>4</SUB>B<SUB>4</SUB>Si<I><SUB>x</SUB></I> and Fe<SUB>78</SUB>Ga<SUB>2</SUB>P<SUB>12−<I>x</I></SUB>C<SUB>4</SUB>B<SUB>4</SUB>Si<I><SUB>x</SUB></I> glassy alloys was investigated. For the both alloys, the addition of 2.5 at%Si was found to be effective for the extension of the supercooled liquid region (<I>ΔT</I><SUB>x</SUB>) defined by the difference between the glass transition (<I>T</I><SUB>g</SUB>) and crystallization temperature (<I>T</I><SUB>x</SUB>). The <I>ΔT</I><SUB>x</SUB> value is 28 K for the Fe<SUB>77</SUB>Ga<SUB>3</SUB>P<SUB>12</SUB>C<SUB>4</SUB>B<SUB>4</SUB> alloy and increases to 48 K for the Fe<SUB>77</SUB>Ga<SUB>3</SUB>P<SUB>9.5</SUB>C<SUB>4</SUB>B<SUB>4</SUB>Si<SUB>2.5</SUB> alloy. The effectiveness of Si addition can be interpreted in the framework of the three component rules for the formation of bulk glassy alloys and the stabilization of supercooled liquid. The three component rules are satisfied at a high degree of level by the addition of Si. The glassy single phase was obtained in the diameter range up to 2.5 mm for the Fe<SUB>77</SUB>Ga<SUB>3</SUB>P<SUB>9.5</SUB>C<SUB>4</SUB>B<SUB>4</SUB>Si<SUB>2.5</SUB> glassy alloy and 2.0 mm for the Fe<SUB>78</SUB>Ga<SUB>2</SUB>P<SUB>9.5</SUB>C<SUB>4</SUB>B<SUB>4</SUB>Si<SUB>2.5</SUB> glassy alloy. The glassy alloys exhibited high saturation magnetization (<I>I</I><SUB>s</SUB>) and good soft magnetic properties, <I>i.e.</I>, high <I>I</I><SUB>s</SUB> of 1.36 and 1.40 T, and low coercive force (<I>H</I><SUB>c</SUB>) of 4.25 and 3.35 A/m, respectively. The high <I>I</I><SUB>s</SUB> and low <I>H</I><SUB>c</SUB> as well as high glass-forming ability of the Fe-based bulk glassy alloys are promising as a new type of soft magnetic bulk alloy.

収録刊行物

  • Materials transactions

    Materials transactions 43(5), 1235-1239, 2002-05-01

    公益社団法人 日本金属学会

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各種コード

  • NII論文ID(NAID)
    10012323964
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    13459678
  • NDL 記事登録ID
    6181516
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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