WO2008146712A1 - フェライト焼結磁石及びその製造方法、並びに仮焼体及びその製造方法 - Google Patents

フェライト焼結磁石及びその製造方法、並びに仮焼体及びその製造方法 Download PDF

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Publication number
WO2008146712A1
WO2008146712A1 PCT/JP2008/059472 JP2008059472W WO2008146712A1 WO 2008146712 A1 WO2008146712 A1 WO 2008146712A1 JP 2008059472 W JP2008059472 W JP 2008059472W WO 2008146712 A1 WO2008146712 A1 WO 2008146712A1
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magnet
production
ferrite sintered
prodution
element component
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PCT/JP2008/059472
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English (en)
French (fr)
Inventor
Hiroshi Iwasaki
Takashi Takami
Naoki Mochi
Seiichi Hosokawa
Yoshinori Kobayashi
Isamu Furuchi
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Hitachi Metals, Ltd.
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Publication of WO2008146712A1 publication Critical patent/WO2008146712A1/ja

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    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
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Abstract

　M型フェライト構造を有し、Ca、希土類元素の少なくとも1種であってLaを必須に含むR元素、Ba及びSrのうちの少なくとも1種であるA元素、Fe及びCoを必須元素とし、下記一般式：Ca1-x-yRxAyFe2n-zCoz(原子比率)［(1-x-y)、x、y、z及びnはそれぞれCa、R元素、A元素及びCoの含有量、及びモル比を表し、0.3≦1-x-y≦0.65、0.2≦x≦0.65、0.001≦y≦0.2、0.03≦z≦0.65、4≦n≦7、1-x-y＞y、及び1-x-y＞x＞z＞yを満たす数値である。］により表わされる組成を有するフェライト焼結磁石及びその製造方法、並びに0.3≦1-x-y≦0.65、0.2≦x≦0.65、0.001≦y≦0.2、0.03≦z≦0.65、4≦n≦7、1-x-y＞y、1-x-y＞z＞y、及びx＞z＞yを満たす数値である。］により表わされる組成を有する仮焼体及びその製造方法。
PCT/JP2008/059472 2007-05-25 2008-05-22 フェライト焼結磁石及びその製造方法、並びに仮焼体及びその製造方法 WO2008146712A1 (ja)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011171568A (ja) * 2010-02-19 2011-09-01 Hitachi Metals Ltd 酸化物磁性材料、フェライト焼結磁石及びフェライト焼結磁石の製造方法
JPWO2011001831A1 (ja) * 2009-06-30 2012-12-13 日立金属株式会社 フェライト焼結磁石の製造方法及びフェライト焼結磁石
JPWO2012090935A1 (ja) * 2010-12-28 2014-06-05 日立金属株式会社 フェライト焼結磁石及びその製造方法
CN113436822A (zh) * 2020-03-23 2021-09-24 Tdk株式会社 铁氧体烧结磁铁
US11810699B2 (en) 2016-12-22 2023-11-07 Tdk Corporation Ferrite sintered magnet, ferrite particles, bonded magnet, motor, and generator
JP7540618B1 (ja) 2023-09-21 2024-08-27 株式会社レゾナック コンパウンド粉、及びコンパウンド粉の製造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0689827A (ja) * 1992-09-08 1994-03-29 Fuji Elelctrochem Co Ltd 乾式磁場成形法によるフェライト磁石の製造方法
JP2002334803A (ja) * 2001-05-08 2002-11-22 Sumitomo Special Metals Co Ltd 永久磁石およびその製造方法
WO2005027153A1 (ja) * 2003-09-12 2005-03-24 Neomax Co., Ltd. フェライト焼結磁石
WO2007060757A1 (ja) * 2005-11-25 2007-05-31 Hitachi Metals, Ltd. 酸化物磁性材料及びその製造方法、並びにフェライト焼結磁石及びその製造方法
WO2007105398A1 (ja) * 2006-03-10 2007-09-20 Hitachi Metals, Ltd. 回転機、ボンド磁石、マグネットロール、及びフェライト焼結磁石の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0689827A (ja) * 1992-09-08 1994-03-29 Fuji Elelctrochem Co Ltd 乾式磁場成形法によるフェライト磁石の製造方法
JP2002334803A (ja) * 2001-05-08 2002-11-22 Sumitomo Special Metals Co Ltd 永久磁石およびその製造方法
WO2005027153A1 (ja) * 2003-09-12 2005-03-24 Neomax Co., Ltd. フェライト焼結磁石
WO2007060757A1 (ja) * 2005-11-25 2007-05-31 Hitachi Metals, Ltd. 酸化物磁性材料及びその製造方法、並びにフェライト焼結磁石及びその製造方法
WO2007105398A1 (ja) * 2006-03-10 2007-09-20 Hitachi Metals, Ltd. 回転機、ボンド磁石、マグネットロール、及びフェライト焼結磁石の製造方法

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2011001831A1 (ja) * 2009-06-30 2012-12-13 日立金属株式会社 フェライト焼結磁石の製造方法及びフェライト焼結磁石
US9162928B2 (en) 2009-06-30 2015-10-20 Hitachi Metals, Ltd. Method for producing sintered ferrite magnet, and sintered ferrite magnet
JP5873333B2 (ja) * 2009-06-30 2016-03-01 日立金属株式会社 フェライト焼結磁石の製造方法及びフェライト焼結磁石
US9773593B2 (en) 2009-06-30 2017-09-26 Hitachi Metals, Ltd. Method for producing sintered ferrite magnet, and sintered ferrite magnet
JP2011171568A (ja) * 2010-02-19 2011-09-01 Hitachi Metals Ltd 酸化物磁性材料、フェライト焼結磁石及びフェライト焼結磁石の製造方法
JPWO2012090935A1 (ja) * 2010-12-28 2014-06-05 日立金属株式会社 フェライト焼結磁石及びその製造方法
JP5929764B2 (ja) * 2010-12-28 2016-06-08 日立金属株式会社 フェライト焼結磁石及びその製造方法
US11810699B2 (en) 2016-12-22 2023-11-07 Tdk Corporation Ferrite sintered magnet, ferrite particles, bonded magnet, motor, and generator
CN113436822A (zh) * 2020-03-23 2021-09-24 Tdk株式会社 铁氧体烧结磁铁
JP7540618B1 (ja) 2023-09-21 2024-08-27 株式会社レゾナック コンパウンド粉、及びコンパウンド粉の製造方法

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