JP4721357B2 - Nd系ボンド磁石の製造方法 - Google Patents
Nd系ボンド磁石の製造方法 Download PDFInfo
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- JP4721357B2 JP4721357B2 JP2006218582A JP2006218582A JP4721357B2 JP 4721357 B2 JP4721357 B2 JP 4721357B2 JP 2006218582 A JP2006218582 A JP 2006218582A JP 2006218582 A JP2006218582 A JP 2006218582A JP 4721357 B2 JP4721357 B2 JP 4721357B2
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Description
Claims (4)
- Nd系磁石粉末とバインダ樹脂を混合して成形し、その成形体を不活性ガス雰囲気中で熱硬化処理した後、得られた磁石体に温度350℃〜500℃、時間1秒〜2分の高温短時間加熱を行うことで前記磁石体の表面近傍の磁石粉末表面のみに酸化被膜を形成する防錆処理を施し、その後、着磁を行うことを特徴とするNd系ボンド磁石の製造方法。
- 高温短時間加熱による保磁力の減少率を10%以下にする請求項1記載のNd系ボンド磁石の製造方法。
- 高温短時間加熱による防錆処理を、温度350℃〜430℃、時間2秒〜5秒の条件で行う請求項1記載のNd系ボンド磁石の製造方法。
- Nd系磁石粉末がNd−Fe−B系磁石合金粉末であり、バインダ樹脂がエポキシ樹脂である請求項1乃至3のいずれかに記載のNd系ボンド磁石の製造方法。
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JP2006218582A JP4721357B2 (ja) | 2006-08-10 | 2006-08-10 | Nd系ボンド磁石の製造方法 |
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JP2006218582A JP4721357B2 (ja) | 2006-08-10 | 2006-08-10 | Nd系ボンド磁石の製造方法 |
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JP2008047554A JP2008047554A (ja) | 2008-02-28 |
JP4721357B2 true JP4721357B2 (ja) | 2011-07-13 |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5262643B2 (ja) * | 2008-12-04 | 2013-08-14 | 信越化学工業株式会社 | Nd系焼結磁石及びその製造方法 |
JP6021096B2 (ja) * | 2012-01-31 | 2016-11-02 | ミネベア株式会社 | ボンド磁石の減磁量を増加させる方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH08148321A (ja) * | 1994-11-21 | 1996-06-07 | Minnesota Mining & Mfg Co <3M> | 磁性組成物および樹脂結合型磁石 |
JPH08316076A (ja) * | 1995-05-18 | 1996-11-29 | Matsushita Electric Ind Co Ltd | ネオジム系ボンド磁石の製造方法 |
JPH11204319A (ja) * | 1998-01-14 | 1999-07-30 | Hitachi Metals Ltd | 希土類ボンド磁石およびその製造方法 |
JP2003328014A (ja) * | 2002-05-15 | 2003-11-19 | Sumitomo Special Metals Co Ltd | ナノコンポジット磁石粉末の製造方法 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08148321A (ja) * | 1994-11-21 | 1996-06-07 | Minnesota Mining & Mfg Co <3M> | 磁性組成物および樹脂結合型磁石 |
JPH08316076A (ja) * | 1995-05-18 | 1996-11-29 | Matsushita Electric Ind Co Ltd | ネオジム系ボンド磁石の製造方法 |
JPH11204319A (ja) * | 1998-01-14 | 1999-07-30 | Hitachi Metals Ltd | 希土類ボンド磁石およびその製造方法 |
JP2003328014A (ja) * | 2002-05-15 | 2003-11-19 | Sumitomo Special Metals Co Ltd | ナノコンポジット磁石粉末の製造方法 |
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