残存アモルファス相を含むαFe/NdFeB系ナノコンポジット合金の磁気特性

• 山崎 実

  戸田工業

• 水口 博崇

  戸田工業

• 浜野 正昭

  戸田工業

• 山元 洋

  明治大

• 井上 明久

  東北大

書誌事項

タイトル別名

• Magnetic Properties of Amorphous-Phase Remaining α Fe/NdFeB Nanocomposite Alloys
• ザンソン アモルファスソウ オ フクム アルファ Fe NdFeBケイ ナノコンポジット ゴウキン ノ ジキ トクセイ
• Magnetic Properties of Amorphous-Phase Remaining α Fe/NdFeB Nanocomposite Alloys

抄録

Limiting Nd content up to 8 at%, amorphous-phase remaining α Fe/NdFeB nanocomposite melt spun and heat treated ribbons with various additional elements can be obtained. The optimum surface velocity of the single roller apparatus for better coercive force (HcJ) is 10-15 m/s. By adding Nb, HcJ increases monotonically. This may be attributed to the fine-grained structure, according to the micromagnetic theory. For example, nearly homogeneous crystal size distribution of around 5 nm is observed in a sample of Nd₈Fe₇₆Co₈Nb₂B₆. When Nd=8 at%, maximum HcJ is as large as 575kA/m (7.22kOe) at Nb=2.5 at%, and the best (BH)max is 154kJ/m³(19.4MGOe) at the same composition. By high-resolution transmission electron microscopy, remaining amorphous phase is observed in ribbons with Nd=8 at%. The remaining amorphous phase shows soft magnetic properties and is thought to act as a crystal growth inhibitor.<br>Epoxy-resin bonded magnets were prepared by the compression molding. It is found that, comparing to the MQP magnet using MQP-B powder, the (BH)max is in the same level of 72kJ/m³ (9MGOe), and magnetizability at lower magnetic field than 800kA/m (10kOe) is superior. Initial flux loss at 100°C for 1 hr, however, is in the range of 3-8% depending on Nb contents.

収録刊行物

• 電気学会論文誌．　Ａ

  電気学会論文誌．　Ａ 119 (6), 790-795, 1999

  一般社団法人 電気学会

キーワード

• ナノコンポジット磁石
• 交換スプリング磁石
• 残存アモルファス相
• ボンド磁石

詳細情報

• CRID: 1390001204598780928
• NII論文ID: 130006838602
• NII論文ID: 10004540164
• NII書誌ID: AN10136312
• DOI: 10.1541/ieejfms1990.119.6_790
• ISSN: 13475533
• ISSN: 03854205
• ISSN: http://id.crossref.org/issn/03854205
• NDL書誌ID: 4738726
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4738726
• Web Site: https://www.jstage.jst.go.jp/article/ieejfms1990/119/6/119_6_790/_pdf
• データソース種別:
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  • NDL
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• 抄録ライセンスフラグ: 使用不可