Formation and Soft Magnetic Properties of Fe-B-Si-Zr Bulk Glassy Alloys with High Saturation Magnetization above 1.5T

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A new Fe-based bulk glassy alloy with good soft magnetic properties and high saturation magnetization (<I>I</I><SUB>s</SUB>) above 1.5 T was formed at the composition of (Fe<SUB>0.75</SUB>B<SUB>0.15</SUB>Si<SUB>0.1</SUB>)<SUB>99</SUB>Zr<SUB>1</SUB>. The addition of 1 at%Zr to Fe<SUB>75</SUB>B<SUB>15</SUB>Si<SUB>10</SUB> caused the appearance of glass transition (<I>T</I><SUB>g</SUB>) at 815 K, followed by a supercooled liquid region (<I>ΔT</I><SUB>x</SUB> (= <I>T</I><SUB>x</SUB>−<I>T</I><SUB>g</SUB>)) of 52 K, in addition to a decrease of Curie temperature (<I>T</I><SUB>c</SUB>) from 714 to 688 K and an increase of crystallization temperature (<I>T</I><SUB>x</SUB>) from 845 to 868 K . The reduced glass transition temperature (<I>T</I><SUB>g</SUB>⁄<I>T</I><SUB>l</SUB>) was measured as 0.59. The increase in the supercooled liquid region enabled us to form bulk glassy alloy rods in the diameter range up to 0.75 mm by the copper mold casting method. The <I>T</I><SUB>c</SUB>, <I>T</I><SUB>g</SUB>, <I>ΔT</I><SUB>x</SUB> and crystallization peak behavior for the bulk glassy alloy rods are nearly the same as those for the corresponding ribbon sample. The bulk glassy alloy rods exhibit high <I>I</I><SUB>s</SUB> of 1.53 T and low coercive force (<I>H</I><SUB>c</SUB>) of 2.8 A/m which are comparable to commercial Fe-based amorphous alloy ribbons. The good combination of the new Fe-based alloy composition, high glass-forming ability and good soft magnetic properties indicates that the new bulk glassy alloy may be used as a new type of soft magnetic material.

収録刊行物

  • Materials transactions

    Materials transactions 43(9), 2350-2353, 2002-09-01

    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)
    10012326523
  • 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
    6313535
  • 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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