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DE60139594D1 - Magnetkern mit Verbundmagnet,umfassend Magnetpulver wovon die Oberfläche der Teilchen mit oxidationsbeständigem Metall beschichtet ist - Google Patents

Magnetkern mit Verbundmagnet,umfassend Magnetpulver wovon die Oberfläche der Teilchen mit oxidationsbeständigem Metall beschichtet ist

Info

Publication number
DE60139594D1
DE60139594D1 DE60139594T DE60139594T DE60139594D1 DE 60139594 D1 DE60139594 D1 DE 60139594D1 DE 60139594 T DE60139594 T DE 60139594T DE 60139594 T DE60139594 T DE 60139594T DE 60139594 D1 DE60139594 D1 DE 60139594D1
Authority
DE
Germany
Prior art keywords
oxidation
particles
coated
resistant metal
bonded magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE60139594T
Other languages
English (en)
Inventor
Teruhiko Fujiwara
Masayoshi Ishii
Haruki Hoshi
Keita Isogai
Hatsuo Matsumoto
Toru Ito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokin Corp
Original Assignee
NEC Tokin Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Tokin Corp filed Critical NEC Tokin Corp
Application granted granted Critical
Publication of DE60139594D1 publication Critical patent/DE60139594D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/25—Magnetic cores made from strips or ribbons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F29/146—Constructional details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type
    • H01F17/04—Fixed inductances of the signal type with magnetic core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F2003/103—Magnetic circuits with permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Soft Magnetic Materials (AREA)
DE60139594T 2000-11-28 2001-11-27 Magnetkern mit Verbundmagnet,umfassend Magnetpulver wovon die Oberfläche der Teilchen mit oxidationsbeständigem Metall beschichtet ist Expired - Lifetime DE60139594D1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2000361645 2000-11-28
JP2000361289 2000-11-28
JP2001019647 2001-01-29
JP2001117665 2001-04-17

Publications (1)

Publication Number Publication Date
DE60139594D1 true DE60139594D1 (de) 2009-10-01

Family

ID=27481824

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60139594T Expired - Lifetime DE60139594D1 (de) 2000-11-28 2001-11-27 Magnetkern mit Verbundmagnet,umfassend Magnetpulver wovon die Oberfläche der Teilchen mit oxidationsbeständigem Metall beschichtet ist

Country Status (6)

Country Link
US (1) US6621398B2 (de)
EP (1) EP1209703B1 (de)
KR (1) KR100844613B1 (de)
CN (2) CN1242431C (de)
DE (1) DE60139594D1 (de)
TW (1) TW559837B (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002021543A1 (fr) * 2000-09-08 2002-03-14 Nec Tokin Corporation Aimant permanent, noyau magnétique utilisant cet aimant comme aimant de polarisation, et pièces à inductance utilisant ce noyau
EP1211700A3 (de) * 2000-11-30 2003-10-15 NEC TOKIN Corporation Polarisierungsmagnet befassende Magnetkern und Induktor unter Verwendung desselben
EP1744328B1 (de) * 2005-06-10 2012-07-25 Nissan Motor Co., Ltd. Seltenerdmagnet mit hoher Festigkeit und mit grossem elektrischem Widerstand
US7183890B2 (en) * 2005-06-21 2007-02-27 Jose De Jesus Camarena Villaseñor Magnetic induction device
CN102385979B (zh) * 2010-10-08 2016-07-27 戴珊珊 永磁增益变压装置
US9980396B1 (en) * 2011-01-18 2018-05-22 Universal Lighting Technologies, Inc. Low profile magnetic component apparatus and methods
CN103827991B (zh) 2011-09-07 2017-09-26 Tdk株式会社 层叠型线圈部件
CN102568768A (zh) * 2012-02-22 2012-07-11 临沂中瑞电子有限公司 一种led用固定电感磁心
KR20140003056A (ko) * 2012-06-29 2014-01-09 삼성전기주식회사 파워 인덕터 및 그 제조방법
JP5756825B2 (ja) * 2013-04-22 2015-07-29 オムロン株式会社 電磁継電器
CN103667918B (zh) * 2013-11-29 2015-09-02 宁波松科磁材有限公司 一种粘结稀土永磁合金的制备方法
CN103680788B (zh) * 2013-11-29 2016-03-02 宁波松科磁材有限公司 一种粘结稀土永磁合金
EP3249664B1 (de) * 2015-01-22 2019-12-04 Alps Alpine Co., Ltd. Pulverkern, verfahren zur herstellung davon, elektrische/elektronische komponente damit und elektrische/elektronische vorrichtung mit darin montierter elektrischer/elektronischer komponente
FR3045924B1 (fr) 2015-12-17 2021-05-07 Commissariat Energie Atomique Noyau d'inductance a pertes magnetiques reduites
JP6667826B2 (ja) 2016-04-13 2020-03-18 ローム株式会社 交流電源装置
US10867745B2 (en) * 2017-07-19 2020-12-15 Futurewei Technologies, Inc. Inductor structure and method for forming the same
CN110423139B (zh) * 2019-07-24 2021-11-02 北矿磁材（阜阳）有限公司 一种钕铁硼磁体表面玻璃涂层的制备方法
US20210249176A1 (en) * 2020-02-06 2021-08-12 David Liu Magnetic composition and magnetic component including the same
EP4135903A4 (de) * 2020-04-16 2025-03-12 DHF America, LLC Magnetfeldgenerator für eine zellschicht
JP7543814B2 (ja) * 2020-10-01 2024-09-03 株式会社村田製作所 コイル部品およびその製造方法
CN113161093B (zh) * 2021-01-19 2024-05-31 宁波晟誉磁电科技有限公司 一种钕铁硼磁材及其制备方法
CN113777487B (zh) * 2021-09-13 2024-04-19 哈尔滨工业大学 退磁环境模拟装置及预计永磁电机时效性退磁风险的方法
CN115050552A (zh) * 2022-05-09 2022-09-13 康舒电子(东莞)有限公司 无气隙磁芯模块及其制造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5432696B2 (de) 1974-04-10 1979-10-16
JPS6010605A (ja) * 1983-06-30 1985-01-19 Hitachi Metals Ltd インダクタンス素子用永久磁石
CN1205108A (zh) * 1996-07-23 1999-01-13 精工爱普生株式会社 稀土类粘结磁铁的制造方法及稀土类粘结磁铁
JP3760357B2 (ja) * 1996-09-26 2006-03-29 山和防災設備株式会社 簡易ヘリポート
JP3838730B2 (ja) * 1997-02-13 2006-10-25 株式会社メイト 軟磁性複合材料
JPH11354344A (ja) * 1998-04-06 1999-12-24 Hitachi Ferrite Denshi Kk インダクタンス素子
JP2000269016A (ja) * 1999-03-18 2000-09-29 Namiki Precision Jewel Co Ltd 磁性材料粉末の表面処理方法
US6432158B1 (en) * 1999-10-25 2002-08-13 Sumitomo Special Metals Co., Ltd. Method and apparatus for producing compact of rare earth alloy powder and rare earth magnet
JP2002164223A (ja) * 2000-11-29 2002-06-07 Tokin Corp 磁気バイアス用磁石を有する磁気コアおよびそれを用いたインダクタンス部品

Also Published As

Publication number Publication date
KR20020041773A (ko) 2002-06-03
US6621398B2 (en) 2003-09-16
KR100844613B1 (ko) 2008-07-07
EP1209703A3 (de) 2003-10-15
CN1790562B (zh) 2011-05-25
TW559837B (en) 2003-11-01
CN1359114A (zh) 2002-07-17
US20020109571A1 (en) 2002-08-15
EP1209703B1 (de) 2009-08-19
CN1790562A (zh) 2006-06-21
CN1242431C (zh) 2006-02-15
EP1209703A2 (de) 2002-05-29

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