JP6817189B2 - 希土類磁石 - Google Patents
希土類磁石 Download PDFInfo
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- JP6817189B2 JP6817189B2 JP2017507642A JP2017507642A JP6817189B2 JP 6817189 B2 JP6817189 B2 JP 6817189B2 JP 2017507642 A JP2017507642 A JP 2017507642A JP 2017507642 A JP2017507642 A JP 2017507642A JP 6817189 B2 JP6817189 B2 JP 6817189B2
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- Crystallography & Structural Chemistry (AREA)
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Description
R:29.5〜35.0質量%、
B:0.7〜0.98質量%、
M:0.03〜1.7質量%、
Cu:0.01〜1.5質量%、及び、
Fe:実質的に残部、及び、
残部を占める元素のうちのFe以外の元素の合計含有量:5.0質量%以下。
MのうちGaの含有量は0.03〜1.5質量%が好ましい。また、MのうちGaの含有量を0.08〜1.2質量%とすることで、成形体の強度が高くなる。MのうちAlの含有量を0.1〜0.5質量%とすることで、成形体の強度が高くなる。
D =100*(B1−B0)/B0(%)
と、評価される。
2 粒界相
5 試料切り出し箇所
11 外縁部の長さ50nmの部分
12a,12b 主相粒子端部
Claims (5)
- R2T14B型結晶構造を有する結晶粒子を主相とする希土類磁石であって、主相粒子内にGaが存在し、主相粒子の一粒子内におけるGaの最高濃度をαGa、最低濃度をβGaとした場合、αGaとβGaの濃度比率A(A=αGa/βGa)が1.50以上となる主相粒子を含むことを特徴とする希土類磁石。
- RとしてNd及びPrの両方を含み、R中のNdの割合及びR中のPrの割合がそれぞれ10質量%以上である請求項1に記載の希土類磁石。
- 前記βGaを示す位置が前記主相粒子の端部から粒子内部に向かって100nm以内に存在している請求項1〜2のいずれかに記載の希土類磁石。
- 前記主相粒子の端部から前記主相粒子の内部に向かって増加するGaの濃度勾配を有し、かつ、前記Gaの濃度勾配を有する領域の長さが100nm以上である請求項1〜3のいずれかに記載の希土類磁石。
- 前記主相粒子の端部から前記主相粒子の内部に向かって増加するGaの濃度勾配を有し、かつ、前記Gaの濃度勾配の絶対値が0.05原子%/μm以上である領域の長さが100nm以上であることを特徴とする請求項1〜4のいずれかに記載の希土類磁石。
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
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JP2015061888 | 2015-03-25 | ||
JP2015061890 | 2015-03-25 | ||
JP2015061888 | 2015-03-25 | ||
JP2015061890 | 2015-03-25 | ||
JP2015061889 | 2015-03-25 | ||
JP2015061889 | 2015-03-25 | ||
PCT/JP2016/059734 WO2016153057A1 (ja) | 2015-03-25 | 2016-03-25 | 希土類磁石 |
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JP2020069326A Division JP2020123735A (ja) | 2015-03-25 | 2020-04-07 | 希土類磁石 |
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JPWO2016153057A1 JPWO2016153057A1 (ja) | 2018-03-01 |
JP6817189B2 true JP6817189B2 (ja) | 2021-01-20 |
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JP2017507642A Active JP6817189B2 (ja) | 2015-03-25 | 2016-03-25 | 希土類磁石 |
JP2017508478A Active JP6810026B2 (ja) | 2015-03-25 | 2016-03-25 | 希土類磁石 |
JP2017508477A Active JP6802149B2 (ja) | 2015-03-25 | 2016-03-25 | 希土類磁石 |
JP2020069326A Pending JP2020123735A (ja) | 2015-03-25 | 2020-04-07 | 希土類磁石 |
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JP2017508478A Active JP6810026B2 (ja) | 2015-03-25 | 2016-03-25 | 希土類磁石 |
JP2017508477A Active JP6802149B2 (ja) | 2015-03-25 | 2016-03-25 | 希土類磁石 |
JP2020069326A Pending JP2020123735A (ja) | 2015-03-25 | 2020-04-07 | 希土類磁石 |
Country Status (5)
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US (3) | US10991493B2 (ja) |
JP (4) | JP6817189B2 (ja) |
CN (3) | CN107430917B (ja) |
DE (3) | DE112016001362T5 (ja) |
WO (3) | WO2016153055A1 (ja) |
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JP6702215B2 (ja) * | 2017-02-02 | 2020-05-27 | 日立金属株式会社 | R−t−b系焼結磁石 |
JP7096729B2 (ja) * | 2018-07-31 | 2022-07-06 | 株式会社日立製作所 | 焼結磁石および焼結磁石の製造方法 |
WO2020133341A1 (zh) * | 2018-12-29 | 2020-07-02 | 三环瓦克华(北京)磁性器件有限公司 | 稀土磁体、稀土溅射磁体、稀土扩散磁体及制备方法 |
JP7387992B2 (ja) * | 2019-03-20 | 2023-11-29 | Tdk株式会社 | R-t-b系永久磁石 |
CN114200137B (zh) * | 2020-09-16 | 2023-09-01 | 四川大学 | 一种以商品化磁珠为内标的比率免疫分析方法 |
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JPS6032306A (ja) | 1983-08-02 | 1985-02-19 | Sumitomo Special Metals Co Ltd | 永久磁石 |
JP2893265B2 (ja) | 1988-12-01 | 1999-05-17 | 株式会社トーキン | 希土類永久磁石合金及びその製造方法 |
US7244318B2 (en) | 2001-01-30 | 2007-07-17 | Neomax Co., Ltd. | Method for preparation of permanent magnet |
JP2004072082A (ja) * | 2002-06-13 | 2004-03-04 | Sumitomo Special Metals Co Ltd | 希土類焼結磁石およびその製造方法 |
CN1570155A (zh) * | 2004-04-29 | 2005-01-26 | 山西汇镪磁性材料制作有限公司 | 烧结钕铁硼永磁体的回火工艺 |
JP4180048B2 (ja) * | 2004-12-24 | 2008-11-12 | Tdk株式会社 | R−t−b系永久磁石 |
EP2043111A1 (en) | 2007-09-10 | 2009-04-01 | Nissan Motor Co., Ltd. | Rare earth permanent magnetic alloy and producing method thereof |
WO2010109760A1 (ja) * | 2009-03-27 | 2010-09-30 | 株式会社日立製作所 | 焼結磁石及びそれを用いた回転電機 |
JP2011021269A (ja) | 2009-03-31 | 2011-02-03 | Showa Denko Kk | R−t−b系希土類永久磁石用合金材料、r−t−b系希土類永久磁石の製造方法およびモーター |
JP5856953B2 (ja) * | 2010-05-20 | 2016-02-10 | 国立研究開発法人物質・材料研究機構 | 希土類永久磁石の製造方法および希土類永久磁石 |
EP2589445B1 (en) * | 2010-07-02 | 2019-10-02 | Santoku Corporation | Method for producing alloy flakes for a rare earth sintered magnet |
JP5644738B2 (ja) * | 2011-11-04 | 2014-12-24 | 日立化成株式会社 | 希土類鉄系磁石の膜形成のための処理液及び希土類鉄系磁石の製造方法 |
JP6303480B2 (ja) * | 2013-03-28 | 2018-04-04 | Tdk株式会社 | 希土類磁石 |
JP6265368B2 (ja) * | 2013-04-22 | 2018-01-24 | 昭和電工株式会社 | R−t−b系希土類焼結磁石およびその製造方法 |
JP6287167B2 (ja) * | 2013-07-16 | 2018-03-07 | Tdk株式会社 | 希土類磁石 |
JP5999080B2 (ja) * | 2013-07-16 | 2016-09-28 | Tdk株式会社 | 希土類磁石 |
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2016
- 2016-03-25 CN CN201680017739.0A patent/CN107430917B/zh active Active
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WO2016153055A1 (ja) | 2016-09-29 |
JPWO2016153057A1 (ja) | 2018-03-01 |
DE112016001362T5 (de) | 2017-12-07 |
JPWO2016153056A1 (ja) | 2018-02-22 |
US10984929B2 (en) | 2021-04-20 |
CN107430917A (zh) | 2017-12-01 |
CN107430918B (zh) | 2020-08-18 |
WO2016153057A1 (ja) | 2016-09-29 |
CN107430918A (zh) | 2017-12-01 |
CN107408437B (zh) | 2020-08-18 |
US10726980B2 (en) | 2020-07-28 |
US20180114616A1 (en) | 2018-04-26 |
CN107430917B (zh) | 2020-08-18 |
JP6802149B2 (ja) | 2020-12-16 |
JPWO2016153055A1 (ja) | 2018-03-01 |
DE112016001395T5 (de) | 2017-12-14 |
DE112016001353T5 (de) | 2017-12-07 |
JP2020123735A (ja) | 2020-08-13 |
WO2016153056A1 (ja) | 2016-09-29 |
US20180082772A1 (en) | 2018-03-22 |
CN107408437A (zh) | 2017-11-28 |
JP6810026B2 (ja) | 2021-01-06 |
US10991493B2 (en) | 2021-04-27 |
US20180108463A1 (en) | 2018-04-19 |
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