書誌事項
- タイトル別名
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- Effects of Annealing on the Coercivity in Sintered Nd-Fe-B Magnets
抄録
In order to understand the coercivity enhancement mechanism by annealing in sintered Nd-Fe-B magnets, we performed systematic annealing experiments. It was found that an addition of 0.13% of Cu not only enhance the coercivity but also ease the required cooling condition after annealing to obtain high coercivity. Using single successive annealing technique, we observed a 0.3 MA/m jump in coercivity at annealing temperature Ta=640℃ for Cu-free Nd-Fe-B magnets and at Ta=440-460℃ for Cu containing ones. We also observed sharp reduction of 0.15 MA/m in coercivity for Cu doped sintered Nd-Fe-B magnets at Ta=600℃. Furthermore, we confirmed a reversible behavior of coercivity at the annealing temperature range which is lower than the optimal annealing temperature. This implies that some kinds of reversible structural natures depending on the temperature are closely related to the coercivity of sintered Nd-Fe-B magnets.<br>
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 76 (1), 36-42, 2012
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282681458890368
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- NII論文ID
- 130004456252
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- ISSN
- 18806880
- 24337501
- 00214876
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可