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 AT94420016T priority patent/ATE143745T1/de
Priority to EP94420016A priority patent/EP0608188B1/fr
Priority to SI9400020A priority patent/SI9400020A/sl
Priority to DE69400618T priority patent/DE69400618T2/de
Priority to FI940318A priority patent/FI940318L/fi
Priority to JP00539194A priority patent/JP3400840B2/ja
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Disintegrating Or Milling (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
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
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
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
FI940318A FI940318L (fi) 1993-01-22 1994-01-21 Menetelmä tiivistettyjen, Fe Nd B -tyyppisten magneettijauheiden ja kestomagneettien suojaamiseksi hapetukselta ja atmosfääriseltä korroosiolta
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

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) FI940318L (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
BRPI0506147B1 (pt) * 2004-10-19 2020-10-13 Shin-Etsu Chemical Co., Ltd método para preparar um material de ímã permanente de terra rara
MY142131A (en) * 2005-03-23 2010-09-30 Shinetsu Chemical Co Functionally graded rare earth permanent magnet
MY142088A (en) * 2005-03-23 2010-09-15 Shinetsu Chemical Co Rare earth permanent magnet
MY141999A (en) * 2005-03-23 2010-08-16 Shinetsu Chemical Co Functionally graded rare earth permanent magnet
MY142024A (en) * 2005-03-23 2010-08-16 Shinetsu Chemical Co Rare earth permanent magnet
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
US7955443B2 (en) * 2006-04-14 2011-06-07 Shin-Etsu Chemical Co., Ltd. Method for preparing rare earth permanent magnet material
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
ATE143745T1 (de) 1996-10-15
DE69400618D1 (de) 1996-11-07
SI9400020A (en) 1994-09-30
JPH07320917A (ja) 1995-12-08
FI940318A7 (fi) 1994-07-23
MX9400180A (es) 1994-07-29
FI940318A0 (fi) 1994-01-21
EP0608188B1 (fr) 1996-10-02
FI940318L (fi) 1994-07-23
JP3400840B2 (ja) 2003-04-28
CA2112868A1 (fr) 1994-07-23
DE69400618T2 (de) 1997-02-27
FR2700720A1 (fr) 1994-07-29
US5411603A (en) 1995-05-02
EP0608188A1 (fr) 1994-07-27

Similar Documents

Publication Publication Date Title
FI940318A0 (fi) Menetelmä tiivistettyjen, Fe Nd B -tyyppisten magneettijauheiden ja kestomagneettien suojaamiseksi hapetukselta ja atmosfääriseltä korroosiolta
MD960180A (ro) Procedeu de separare a unui component radioactiv de alt component în compoziţie radioactivă şi procedeu de reducere a volumului radioactivităţii
AU3394593A (en) A smelting reduction method with high productivity
AU5313899A (en) High performance iron-rare earth-boron-refractory-cobalt nanocomposites
DE3684714D1 (de) Verfahren zur herstellung von dauermagneten.
CA2143337A1 (fr) Methode et melange pour le traitement des poussieres formees dans les fours a arc electrique
MX9500226A (es) Metodo para hacer acero con alto contenido de nitrogeno.
CA2051838A1 (fr) Reduction metallothermique de fluorures de terre rare
DK0680393T3 (da) Fremgangsmåde til genbrug af skrotmetal
JPS6427205A (en) Manufacture of sintered rare earth permanent magnet
EP0244968A3 (en) Method for the thermal treatment of sintered metal permanent magnets
DE59701754D1 (de) Verfahren zur herstellung von verschleissfesten boridschichten auf metallischen werkstoffoberflächen
JPS56150153A (en) Permanent magnet alloy
JPS51143514A (en) Process for producing manganese addition agent for iron and steel
FR2707192B1 (fr) Procédé de préparation de poudres magnétiques de type terres rares-cobalt contenant du fluor et aimants permanents densifiés correspondants.
SE9502711L (sv) Blandat järnpulver för pulvermetallurgi
EP0698903A3 (fr) Appareil de décharge à plasma
EP0277416A3 (fr) Alliage pour aimant permanent pour applications à haute température
Imaizumi Method of Manufacture of Permanent Magnets
Deryagin et al. Nature of the magnetic anisotropy of the rare earth subsystem in intermetallic(R-Co) compounds.
SU1681559A1 (ru) Лигатура для получения сплавов для постоянных магнитов
SG29795G (en) Method for obtaining powdered magnetic material of the rare earth-transition metal-boron type for corrosion resistant magnets
JPS5376758A (en) Plasma etching method
JPS5644736A (en) Permanent magnet alloy
EP0820070A3 (fr) Matières premières en poudre pour aimants permanents et leurs procédé de fabrication

Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20070930