MY119680A - Fe-b-r based permanent magnet having corrosion-resistant film, and process for producing the same - Google Patents

Fe-b-r based permanent magnet having corrosion-resistant film, and process for producing the same

Info

Publication number
MY119680A
MY119680A MYPI9903592A MY119680A MY 119680 A MY119680 A MY 119680A MY PI9903592 A MYPI9903592 A MY PI9903592A MY 119680 A MY119680 A MY 119680A
Authority
MY
Malaysia
Prior art keywords
permanent magnet
magnet
corrosion
temperature
humidity
Prior art date
Application number
Inventor
Takeshi Nishiuchi
Kohshi Yoshimura
Fumiaki Kikui
Original Assignee
Neomax Co Ltd
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 Neomax Co Ltd filed Critical Neomax Co Ltd
Publication of MY119680A publication Critical patent/MY119680A/en

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Hard Magnetic Materials (AREA)
  • Chemically Coating (AREA)

Abstract

AN FE - B - RMASED PERMANENT MAGNET HAS A METAL OXIDE FILM HAVING A THICKNESS OF 0.01 µM TO µM ON ITS SURFACE WITH A MATELFILM INTERPOSED THEREBETWEEN. THUS, THE FILM IS EXCELLENT IN ADHENSION TO THE SURAFE OF THE MAGNET. EVEN IF THE PERMANENT MAGNET IS LEFT TO STAND UNDER HIGH-TEMPERATURE AND HIGH-HUMIDITY IS LEFT TO STAND UNDER HIGH-TEMPERATURE AND HIGH-HUMIDITY OF TEMPERATURE OF 80° AND A RELATIVE HUMIDITY OF 90FOR A LONG PERIOND OF TIME, THE MAGNETIC CHARACTERISTIC OF THE MAGNET CANNOT BE DEGRADED. THE MAGNET HAS A THERMAL SHOCK RESISTANCE ENOUGH TO RESIST EVEN A HEAT CYCLE FOR A LONG PERIOD OF TIME IN A TEPERATURE RANGE OF -40°C TO 85°C, AND CAN EXHIBIT A STABLE HIGH MAGNETIC CHARACTERISTIC. THEREFORE, IT IS POSSIBLE TO PRODUCE AN FE - B - R BASED PERMANENT MAGNET HAVING A CORROSION-RESISTANT FILM FREE FROM HEXA-VALENT CHROMIUN.
MYPI9903592 1998-08-31 1999-08-20 Fe-b-r based permanent magnet having corrosion-resistant film, and process for producing the same MY119680A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP26247698 1998-08-31
JP27950798 1998-10-01
JP28662898 1998-10-08
JP30373198 1998-10-26
JP34991598 1998-12-09

Publications (1)

Publication Number Publication Date
MY119680A true MY119680A (en) 2005-06-30

Family

ID=27530409

Family Applications (2)

Application Number Title Priority Date Filing Date
MYPI9903593 MY117187A (en) 1998-08-31 1999-08-20 Process for producing fe-b-r based permanent magnet having a corrosion-resistant film
MYPI9903592 MY119680A (en) 1998-08-31 1999-08-20 Fe-b-r based permanent magnet having corrosion-resistant film, and process for producing the same

Family Applications Before (1)

Application Number Title Priority Date Filing Date
MYPI9903593 MY117187A (en) 1998-08-31 1999-08-20 Process for producing fe-b-r based permanent magnet having a corrosion-resistant film

Country Status (3)

Country Link
EP (1) EP0984464B1 (en)
DE (2) DE69918915T2 (en)
MY (2) MY117187A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4162884B2 (en) * 2001-11-20 2008-10-08 信越化学工業株式会社 Corrosion-resistant rare earth magnet

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61150201A (en) * 1984-12-24 1986-07-08 Sumitomo Special Metals Co Ltd Permanent magnet with excellent anticorrosion property

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0237081B2 (en) * 1985-12-24 1990-08-22 Tokin Corp EIKYUJISHAKUNOSEIZOHOHO
DE69220519T2 (en) * 1991-03-04 1998-02-19 Toda Kogyo Corp Process for plating a bonded magnet and bonded magnet with a metal coating
JPH07230906A (en) * 1994-02-16 1995-08-29 Yazaki Corp Permanent magnet and manufacturing method thereof
JPH07302705A (en) * 1994-05-09 1995-11-14 Daido Steel Co Ltd Corrosion resistant rare earth magnet and method of manufacturing the same
JPH09289108A (en) * 1996-04-19 1997-11-04 Sumitomo Special Metals Co Ltd R-fe-b permanent magnet having electric insulating film excellent in adhesion and its manufacture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61150201A (en) * 1984-12-24 1986-07-08 Sumitomo Special Metals Co Ltd Permanent magnet with excellent anticorrosion property

Also Published As

Publication number Publication date
MY117187A (en) 2004-05-31
EP0984464B1 (en) 2004-07-28
EP0984464A2 (en) 2000-03-08
DE69918915D1 (en) 2004-09-02
EP0984464A3 (en) 2000-06-07
DE69915554D1 (en) 2004-04-22
DE69915554T2 (en) 2005-01-27
HK1026060A1 (en) 2000-12-01
DE69918915T2 (en) 2005-07-28

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