Formation and Magnetic Properties of Bulk Glassy Fe–Co–Nd–Dy–B Alloys with High Boron Concentrations

• Zhang Wei

  Inoue Superliquid Glass Project, Exploratory Research for Advanced Technology, Japan Science and Technology Corporation

• Inoue Akihisa

  Institute for Materials Research, Tohoku University

書誌事項

タイトル別名

• Formation and Magnetic Properties of Bulk Glassy Fe–Co–Nd–Dy–B Alloys with High Boron Concentrations

抄録

New Fe-based glassy alloys in Fe–Co–Nd–Dy–B system with high boron concentrations were found to exhibit a wide supercooled liquid region exceeding 50 K. The high stability of the supercooled liquid enabled us to produce cylindrical bulk glassy alloys with diameters up to 0.75 mm by copper mold casting. The glass transition temperature (T_g), crystallization temperature (T_x), supercooled liquid region ΔT_x (=T_x−T_g) and heat of crystallization of the φ0.75 mm rod of glassy Fe₆₂Co_9.5Nd₃Dy_0.5B₂₅ alloy are 844 K, 899 K, 55 K and 4.46 kJ/mol, respectively. No appreciable difference in the thermal stability is seen between the bulk rods and melt-spun ribbon. The saturation magnetization (I_s), coercive force (H_c), saturated magnetostriction (λ_s) and Curie temperature (T_c) of the melt-spun Fe₆₂Co_9.5Nd₃Dy_0.5B₂₅ ribbon are 1.37 T, 4.58 A/m, 17.9×10⁻⁶ and 663 K, respectively, and I_s and T_c are nearly the same as those for the bulk glass rods with diameters of 0.5 and 0.75 mm. The success of forming the Fe-based bulk glassy alloys exhibiting good soft magnetic properties is promising for future development as a new type of soft magnetic material.

収録刊行物

• Materials Transactions, JIM

  Materials Transactions, JIM 41 (12), 1679-1682, 2000

  社団法人 日本金属学会

キーワード

• iron-based bulk glassy alloy
• iron-cobalt-rare earth-boron system
• high boron concentration
• supercooled liquid region
• glass-forming ability
• soft magnetic properties

詳細情報

• CRID: 1390282679222736896
• NII論文ID: 130003557355
• NII論文ID: 10005354805
• NII書誌ID: AA10699969
• DOI: 10.2320/matertrans1989.41.1679
• COI: 1:CAS:528:DC%2BD3MXhtlWms7g%3D
• ISSN: 2432471X
• ISSN: 09161821
• NDL書誌ID: 5883313
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5883313
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1989/41/12/41_12_1679/_pdf
• 本文言語コード: en
• データソース種別:
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