Bulk Glassy Fe-Ga-P-C-B Alloys with High Saturation Magnetization and Good Soft Magnetic Properties Synthesized by Fluxing Treatment and Copper Mold Casting

• Shen Baolong

  Institute for Materials Research, Tohoku University

• Kimura Hisamichi

  Institute for Materials Research, Tohoku University

• Inoue Akihisa

  Institute for Materials Research, Tohoku University

• Mizushima Takao

  Magnetic Application Department, Alps Electric Co. Ltd.

抄録

The effect of fluxing treatment on the glass-forming ability for the Fe₇₅Ga₅P₁₂C₄B₄ glassy alloy was investigated. The fluxing treatment was found to be effective for the elimination of heterogeneous nucleation sites. The glass transition temperature (T_g), crystallization temperature (T_x), supercooled liquid region (ΔT_x) and reduced glass transition temperature (T_g⁄T_m) are all increased by fluxing treatment. The T_g, T_x, ΔT_x and T_g⁄T_m values for Fe₇₅Ga₅P₁₂C₄B₄ glassy alloy are 731 K, 768 K, 37 K and 0.610 respectively before fluxing treatment, increase to 749 K, 805 K, 56 K and 0.625 respectively after fluxing treatment. Bulk glassy Fe₇₅Ga₅P₁₂C₄B₄ alloy rods with high saturated magnetization (I_s) of 1.27 T and good soft magnetic properties of 1.6 A/m for coercive force (H_c) were prepared with diameters range up to 2.5 mm by the copper mold casting method of fluxed alloy melt. The glass synthesis consists of preparing the alloy ingot by induction melting, thermal cycling and purifying the melt in B₂O₃ flux inside a silica tube and then casting the purified alloy into a copper mold. The size of 2.5 mm in diameter of the rod is not an upper limit.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 42 (4), 660-663, 2001

  公益社団法人 日本金属学会

キーワード

• fluxing treatment
• bulk glassy alloy
• high saturation magnetization
• good soft magnetic properties
• high reduced glass transition temperature

詳細情報

• CRID: 1390001204245970560
• NII論文ID: 130004451494
• NII論文ID: 10006548479
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.42.660
• COI: 1:CAS:528:DC%2BD3MXktlKjsbw%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 5764772
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5764772
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/42/4/42_4_660/_pdf
• 本文言語コード: en
• データソース種別:
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