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MY117187A - Process for producing fe-b-r based permanent magnet having a corrosion-resistant film - Google Patents

Process for producing fe-b-r based permanent magnet having a corrosion-resistant film

Info

Publication number
MY117187A
MY117187A MYPI9903593A MY117187A MY 117187 A MY117187 A MY 117187A MY PI9903593 A MYPI9903593 A MY PI9903593A MY 117187 A MY117187 A MY 117187A
Authority
MY
Malaysia
Prior art keywords
magnet
metal
permanent magnet
based permanent
film
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 MY117187A publication Critical patent/MY117187A/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-R BASED PERMANENT MAGNET AND METAL PIECES ARE PLACED INTO A TREATING VESSEL, WHERE THEY ARE VIBRATED AND/OR AGITATED, WHEREBY A METAL FILM IS FORMED ON THE SURFACE OF THE MAGNET. A SOL SOLUTION PRODUCED BY THE HYDROLYTIC REACTION AND THE POLYMERIZING REACTION OF A METAL COMPOUND WHICH IS A STARTING MATERIAL FOR A METAL OXIDE FILM IS APPLIED TO THE METAL FILM AND SUBJECTED TO A HEAT TREATMENT TO FORM A METAL OXIDE FILM. THEREFORE, IT IS POSSIBLE TO FORM, ON THE SURFACE OF THE MAGNET, A CORROSION-RESISTANT FILM WHICH CAN BE PRODUCED EASILY AND AT A LOW COST WITHOUT CARRYING-OUT OF A PLATING TREATMENT OR A TREATMENT USING HEXA-VALENT CHROMIUM AND WHICH HAS AN EXCELLENT ADHESION TO THE SURFACE OF THE MAGNET AND CAN EXHIBIT A STABLE HIGH MAGNETIC CHARACTERISTIC WHICH CANNOT BE DETERIORATED EVEN IF THE MAGNET IS LEFT TO STAND FOR A LONG PERIODOF TIME UNDER HIGH-TEMPERATURE AND HIGH-HUMIDITY CONDITIONS OF A TEMPERATURE OF 80°C AND A RELATIVE HUMIDITY OF 90 THUS, IT IS POSSIBLE TO PROVIDE AN FE-B-R BASED PERMANENT MAGNET HAVING AN EXCELLENT CORROSION RESISTANCE.
MYPI9903593 1998-08-31 1999-08-20 Process for producing fe-b-r based permanent magnet having a corrosion-resistant film MY117187A (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
MY117187A true MY117187A (en) 2004-05-31

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 After (1)

Application Number Title Priority Date Filing Date
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

Country Status (4)

Country Link
EP (1) EP0984464B1 (en)
DE (2) DE69915554T2 (en)
HK (1) HK1026060A1 (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

Family Cites Families (6)

* 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
JPH0237081B2 (en) * 1985-12-24 1990-08-22 Tokin Corp EIKYUJISHAKUNOSEIZOHOHO
EP0502475B1 (en) * 1991-03-04 1997-06-25 Toda Kogyo Corporation Method of plating a bonded magnet and a bonded magnet carrying a metal coating
JPH07230906A (en) * 1994-02-16 1995-08-29 Yazaki Corp Permanent magnet and its manufacture
JPH07302705A (en) * 1994-05-09 1995-11-14 Daido Steel Co Ltd Corrosion-resistant rare earth magnet and its manufacture
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

Also Published As

Publication number Publication date
EP0984464A2 (en) 2000-03-08
DE69915554D1 (en) 2004-04-22
MY119680A (en) 2005-06-30
EP0984464B1 (en) 2004-07-28
EP0984464A3 (en) 2000-06-07
DE69918915D1 (en) 2004-09-02
DE69918915T2 (en) 2005-07-28
DE69915554T2 (en) 2005-01-27
HK1026060A1 (en) 2000-12-01

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