非晶質粉末の固化成形により作製したナノ結晶Fe-Rich Fe-Nb-Nd-B磁石 (<特集>ハード材料)
書誌事項
- タイトル別名
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- Nanocrystalline Fe-Rich Fe-Nb-Nd-B Magnets Produced by Consolidating Amorphous Powders
- 非晶質粉末の固化成形により作製したナノ結晶Fe-Rich Fe-Nb-Nd-B 磁石
- ヒショウシツ フンマツ ノ コカ セイケイ ニ ヨリ サクセイシタ ナノ ケッ
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Nanocrystalline bulk Fe88Nb2Nd5B5 and Fe86Nb2Nd7B5 alloys were made by consolidating amorphous powders with a spark-plasma-sintering method and subsequent annealing. Bulk alloy made by consolidating amorphous powders has a higher density than that made by consolidating crystalline powders, presumably because the amorphous alloy softens around the crystalline temperature. Bulk Fe88Nb2Nd5B5 and Fe86Nb2Nd7B5 alloys made by consolidating amorphous powders at a temperature of 873 K and a pressure of 636 MPa have a density of 7.5 g/cm3, and form a nanocrystalline composite structure of bcc-Fe, Fe3B, and Nd2Fe14B phases with grain sizes of 20-40 nm after annealing at 1023K. Nanocrystalline bulk alloys show hard magnetic properties, remanence (Jr) of 0.83-1.0 T, coercive force (HcJ) of 190-290 kA/m, and maximum energy product (BH)max of 43-49 kJ/m3.
収録刊行物
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- 日本応用磁気学会誌
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日本応用磁気学会誌 21 (4_2), 365-368, 1997
公益社団法人 日本磁気学会
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詳細情報 詳細情報について
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- CRID
- 1390001205093894016
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- NII論文ID
- 110002809886
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- NII書誌ID
- AN0031390X
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- ISSN
- 18804004
- 02850192
- http://id.crossref.org/issn/02850192
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- NDL書誌ID
- 4192938
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- データソース種別
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- JaLC
- NDL
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