Thermal Stability and Soft Magnetic Properties of Fe-Co-Ga-P-C-B Alloys with High Glass-Forming Ability.

• Shen Baolong

  Inoue Superliquid Glass Project, ERATO, Japan Science Technology Corporation

• Kimura Hisamichi

  Institute for Materials Research, Tohoku University

• Inoue Akihisa

  Institute for Materials Research, Tohoku University

抄録

The effect of ferromagnetic metal Co on the glass-forming ability and magnetic properties for the Fe_75-xCo_xGa₅P₁₂C₄B₄ glassy alloys was investigated. The additions of 10 to 15 at% Co were found to be effective for the extension of the supercooled liquid region (ΔT_x) defined by the difference between the glass transition temperature (T_g) and crystallization temperature (T_x). The ΔT_x value is 37K for the Fe₇₅Ga₅P₁₂C₄B₄ alloy and increases to 48K for the 10, 12.5 and 15at% Co alloys. The liquidus temperature (T₁) of the 10, 12.5 and 15 at% Co alloys decreased by the addition of Co and the reduced glass transition temperature (T_g/T₁) increased. The largest T_g/T₁ is 0.61 for the Fe₆₅Co₁₀Ga₅P₁₂C₄B₄ alloy. These glassy ribbon alloys exhibit good soft magnetic properties of 1.15 to 1.3 T for saturation magnetization and 2.4 to 3.3 A/m for coercive force. Based on the large ΔT_x and high T_g/T₁ values, we tried to prepare bulk glassy Fe_75-xCo_xGa₅P₁₂C₄B₄ (x=10, 12.5, 15) rods in a cylindrical form with different diameters. The glassy single phase was obtained in the diameter of 1.5mm in the composition range of 10 to 15 at% Co. Furthermore, for the Fe₆₅Co₁₀Ga₅P₁₂C₄B₄ alloy, a bulk glassy rod with good soft magnetic properties in diameter of 2mm was formed.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 49 (12), 1113-1118, 2002

  一般社団法人 粉体粉末冶金協会

キーワード

• bulk glassy alloy
• high glass-forming ability
• soft magnetic properties
• large supercooled liquid region
• ironcobalt base system

詳細情報

• CRID: 1390001206309236864
• NII論文ID: 10010214249
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.49.1113
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 6419285
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6419285
• 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