Soft Magnetic Properties and Wide Supercooled Liquid Region of Fe–P–B–Si Base Amorphous Alloys

• Inoue Akihisa

  Institute for Materials Research, Tohoku University

• Park Rae Eun

  Institute for Materials Research, Tohoku University

書誌事項

タイトル別名

• Soft Magnetic Properties and Wide Supercooled Liquid Region of Fe–P–B–Si Base Amorphous Alloys
• Soft Magnetic Properties and Wide Super

抄録

The glass transition phenomenon was observed in the temperature range before crystallization for amorphous Fe₈₀(P, B, Si)₂₀ alloys. The temperature interval of the supercooled liquid region (ΔT_x) is defined by the difference between glass transition temperature (T_g) and crystallization temperature (T_x) and the largest ΔT_x(=T_x−T_g) value is 36 K for Fe₈₀P₁₂B₄Si₄ where the crystallization reaction takes place through a single stage. The ΔT_x value increases by the dissolution of Al and/or Ga and the largest value is 46 K for Fe₇₆Al₄P₁₂B₄Si₄ and 49 K for Fe₇₄Al₄Ga₂P₁₂B₄Si₄. The effectiveness of additional Al and/or Ga elements is interpreted to result from the formation of a higher degree of dense random packed structure by dissolving the Al and Ga elements with larger atomic sizes. These Fe-based amorphous alloys exhibiting the glass transition phenomenon crystallize through a single-stage exothermic reaction due to the precipitation of five crystalline phases α-Fe, Fe₃B, Fe₂B, Fe₃P and FeP. The long-range atomic rearrangement necessary for the nearly simultaneous precipitaion of the five crystalline phases seems to cause the appearance of the supercooled liquid region through the retardation of the precipitation reaction. The Fe-based amorphous alloys exhibit good soft magnetic properties of 1.14 to 1.34 T for saturation magnetization, 1.1 to 6.4 A/m for coercive force and 19000 to 22000 for permeability at 1 kHz in the annealed state for 600 s at 723 K. The synthesis of the Fe-based amorphous alloys exhibiting good soft magnetic properties and a wide supercooled liquid region is important for future development of a new type of soft magnetic material.

収録刊行物

• Materials Transactions, JIM

  Materials Transactions, JIM 37 (11), 1715-1721, 1996

  社団法人 日本金属学会

キーワード

• iron-based amorphous alloy
• glass transition
• supercooled liquid region
• soft magnetic properties
• single-stage crystallization
• rapid solidification

詳細情報

• CRID: 1390001204248336896
• NII論文ID: 130003556599
• NII論文ID: 10002451102
• NII書誌ID: AA10699969
• DOI: 10.2320/matertrans1989.37.1715
• COI: 1:CAS:528:DyaK2sXntFKmtg%3D%3D
• ISSN: 2432471X
• ISSN: 09161821
• NDL書誌ID: 4090719
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4090719
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1989/37/11/37_11_1715/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可