FR2700720B1 - Procédé de protection de poudres magnétiques et aimants permanents densifiés type Fe Nd B contre l'oxydation et la corrosion atmosphérique. - Google Patents

Procédé de protection de poudres magnétiques et aimants permanents densifiés type Fe Nd B contre l'oxydation et la corrosion atmosphérique.

Info

Publication number
FR2700720B1
FR2700720B1 FR9300840A FR9300840A FR2700720B1 FR 2700720 B1 FR2700720 B1 FR 2700720B1 FR 9300840 A FR9300840 A FR 9300840A FR 9300840 A FR9300840 A FR 9300840A FR 2700720 B1 FR2700720 B1 FR 2700720B1
Authority
FR
France
Prior art keywords
powders
atmospheric corrosion
permanent magnets
against oxidation
protection
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 - Fee Related
Application number
FR9300840A
Other languages
English (en)
Other versions
FR2700720A1 (fr
Inventor
Masato Sagawa
Fernand Viakl
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.)
Aimants Ugimac SA
Original Assignee
Aimants Ugimac SA
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 Aimants Ugimac SA filed Critical Aimants Ugimac SA
Priority to FR9300840A priority Critical patent/FR2700720B1/fr
Priority to US08/162,292 priority patent/US5411603A/en
Priority to MX9400180A priority patent/MX9400180A/es
Priority to CA002112868A priority patent/CA2112868A1/fr
Priority to DE69400618T priority patent/DE69400618T2/de
Priority to SI9400020A priority patent/SI9400020A/sl
Priority to AT94420016T priority patent/ATE143745T1/de
Priority to EP94420016A priority patent/EP0608188B1/fr
Priority to JP00539194A priority patent/JP3400840B2/ja
Priority to FI940318A priority patent/FI940318A/fi
Publication of FR2700720A1 publication Critical patent/FR2700720A1/fr
Application granted granted Critical
Publication of FR2700720B1 publication Critical patent/FR2700720B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/026—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets protecting methods against environmental influences, e.g. oxygen, by surface treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • 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
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0572—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes with a protective layer
FR9300840A 1993-01-22 1993-01-22 Procédé de protection de poudres magnétiques et aimants permanents densifiés type Fe Nd B contre l'oxydation et la corrosion atmosphérique. Expired - Fee Related FR2700720B1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
FR9300840A FR2700720B1 (fr) 1993-01-22 1993-01-22 Procédé de protection de poudres magnétiques et aimants permanents densifiés type Fe Nd B contre l'oxydation et la corrosion atmosphérique.
US08/162,292 US5411603A (en) 1993-01-22 1993-12-07 Method of protecting magnetic powders and densified permanent magnets of the Fe Nd B type from oxidation and atmospheric corrosion
MX9400180A MX9400180A (es) 1993-01-22 1994-01-03 Metodo para la proteccion de polvos magneticos e imanes permanentes densificados del tipo fe-nd-b contra la oxidacion y la corrosion atmosferica.
CA002112868A CA2112868A1 (fr) 1993-01-22 1994-01-05 Procede de protection de poudres magnetiques et aimants permanents densifies type fe nd b contre l'oxydation et la corrosion atmospherique
SI9400020A SI9400020A (en) 1993-01-22 1994-01-19 Procedure for protection of magnetic powder and condensed permanent magnets of type FeNdB against the oxidation and atmospheric corrosion
AT94420016T ATE143745T1 (de) 1993-01-22 1994-01-19 Verfahren zum schutz von magnetpudern und verdichte dauermagneten, typ nd-fe-b, gegen oxydation und atmospherische korrosion
DE69400618T DE69400618T2 (de) 1993-01-22 1994-01-19 Verfahren zum Schutz von Magnetpudern und verdichte Dauermagneten, Typ Nd-Fe-B, gegen Oxydation und atmospherische Korrosion
EP94420016A EP0608188B1 (fr) 1993-01-22 1994-01-19 Procédé de protection de poudres magnétiques et aimants permanents densifies type Fe Nd B contre l'oxydation et la corrosion atmosphérique
JP00539194A JP3400840B2 (ja) 1993-01-22 1994-01-21 Ｆｅ−Ｎｄ−Ｂ系磁性粉末及び高密度化永久磁石を酸化及び大気腐食から保護する方法
FI940318A FI940318A (fi) 1993-01-22 1994-01-21 Menetelmä tiivistettyjen, Fe Nd B -tyyppisten magneettijauheiden ja kestomagneettien suojaamiseksi hapetukselta ja atmosfääriseltä korroosiolta

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9300840A FR2700720B1 (fr) 1993-01-22 1993-01-22 Procédé de protection de poudres magnétiques et aimants permanents densifiés type Fe Nd B contre l'oxydation et la corrosion atmosphérique.

Publications (2)

Publication Number Publication Date
FR2700720A1 FR2700720A1 (fr) 1994-07-29
FR2700720B1 true FR2700720B1 (fr) 1995-05-05

Family

ID=9443427

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9300840A Expired - Fee Related FR2700720B1 (fr) 1993-01-22 1993-01-22 Procédé de protection de poudres magnétiques et aimants permanents densifiés type Fe Nd B contre l'oxydation et la corrosion atmosphérique.

Country Status (10)

Country Link
US (1) US5411603A (fr)
EP (1) EP0608188B1 (fr)
JP (1) JP3400840B2 (fr)
AT (1) ATE143745T1 (fr)
CA (1) CA2112868A1 (fr)
DE (1) DE69400618T2 (fr)
FI (1) FI940318A (fr)
FR (1) FR2700720B1 (fr)
MX (1) MX9400180A (fr)
SI (1) SI9400020A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6580820B1 (en) 1999-06-09 2003-06-17 Xerox Corporation Digital imaging method and apparatus for detection of document security marks
JP5437544B2 (ja) * 2001-06-11 2014-03-12 株式会社三徳 二次電池用負極の製造法
JP4747562B2 (ja) * 2004-06-25 2011-08-17 株式会社日立製作所 希土類磁石及びその製造方法、並びに磁石モータ
KR101123176B1 (ko) * 2004-10-19 2012-03-19 신에쓰 가가꾸 고교 가부시끼가이샤 희토류 영구자석 재료의 제조방법
MY142024A (en) * 2005-03-23 2010-08-16 Shinetsu Chemical Co Rare earth permanent magnet
TWI413136B (zh) * 2005-03-23 2013-10-21 Shinetsu Chemical Co 稀土族永久磁體
MY142131A (en) * 2005-03-23 2010-09-30 Shinetsu Chemical Co Functionally graded rare earth permanent magnet
MY141999A (en) * 2005-03-23 2010-08-16 Shinetsu Chemical Co Functionally graded rare earth permanent magnet
US7955443B2 (en) * 2006-04-14 2011-06-07 Shin-Etsu Chemical Co., Ltd. Method for preparing rare earth permanent magnet material
JP4656323B2 (ja) * 2006-04-14 2011-03-23 信越化学工業株式会社 希土類永久磁石材料の製造方法
JP4840606B2 (ja) 2006-11-17 2011-12-21 信越化学工業株式会社 希土類永久磁石の製造方法
DE102007032406B3 (de) * 2007-07-10 2008-10-23 Gkss-Forschungszentrum Geesthacht Gmbh Herstellung von Legierungen auf Basis von Titanaluminiden
JP2012039017A (ja) * 2010-08-11 2012-02-23 Hitachi Ltd 磁石材料，磁石成形品及び回転機
CN113444982A (zh) * 2020-03-25 2021-09-28 Neo新材料技术（新加坡）私人有限公司 合金粉末及其制备方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61124502A (ja) * 1984-11-21 1986-06-12 Mitsui Mining & Smelting Co Ltd 安定性金属磁性粉末及びその製造方法
JPH01205502A (ja) * 1988-02-12 1989-08-17 Seiko Epson Corp 希土類・鉄系樹脂結合型磁石

Also Published As

Publication number Publication date
CA2112868A1 (fr) 1994-07-23
EP0608188B1 (fr) 1996-10-02
MX9400180A (es) 1994-07-29
JPH07320917A (ja) 1995-12-08
FI940318A (fi) 1994-07-23
JP3400840B2 (ja) 2003-04-28
DE69400618T2 (de) 1997-02-27
DE69400618D1 (de) 1996-11-07
FI940318A0 (fi) 1994-01-21
EP0608188A1 (fr) 1994-07-27
ATE143745T1 (de) 1996-10-15
SI9400020A (en) 1994-09-30
US5411603A (en) 1995-05-02
FR2700720A1 (fr) 1994-07-29

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20070930