JPS5766604A - Surface treatment for rare-earth cobalt magnet - Google Patents

Surface treatment for rare-earth cobalt magnet

Info

Publication number
JPS5766604A
JPS5766604A JP55142016A JP14201680A JPS5766604A JP S5766604 A JPS5766604 A JP S5766604A JP 55142016 A JP55142016 A JP 55142016A JP 14201680 A JP14201680 A JP 14201680A JP S5766604 A JPS5766604 A JP S5766604A
Authority
JP
Japan
Prior art keywords
magnet
rare
copper
plating
earth cobalt
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.)
Pending
Application number
JP55142016A
Other languages
Japanese (ja)
Inventor
Hideki Yamamiya
Hajime Kohama
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55142016A priority Critical patent/JPS5766604A/en
Publication of JPS5766604A publication Critical patent/JPS5766604A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01F1/06—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 in the form of particles, e.g. powder
    • H01F1/061—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 in the form of particles, e.g. powder with a protective layer

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE:To facilitate brazing, on mounting a magnet to an equipment, and to prevent defective chipping from occurring, by degreasing, copper-plating and nickel- plating a rare-earth cobalt magnet. CONSTITUTION:A rare-earth cobalt magnet is degreased and cleaned with triclean. After drying, it is copper-plated and then nickel-plated. The copper is proportioned 10/1 through 1/10 and particularly 5/1 through 1/5 is better, in the layers formed on the magnet surface. When it is brazed to certain place of an equipment in use, it can e brazed easily with strong adhesion and used well for a long period of time. Its magnetic characteristics are not influenced at all. The combination of copper- plating and nickel-plating improves corrosion resistance as a magnet.
JP55142016A 1980-10-13 1980-10-13 Surface treatment for rare-earth cobalt magnet Pending JPS5766604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55142016A JPS5766604A (en) 1980-10-13 1980-10-13 Surface treatment for rare-earth cobalt magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55142016A JPS5766604A (en) 1980-10-13 1980-10-13 Surface treatment for rare-earth cobalt magnet

Publications (1)

Publication Number Publication Date
JPS5766604A true JPS5766604A (en) 1982-04-22

Family

ID=15305407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55142016A Pending JPS5766604A (en) 1980-10-13 1980-10-13 Surface treatment for rare-earth cobalt magnet

Country Status (1)

Country Link
JP (1) JPS5766604A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190461A2 (en) * 1984-12-24 1986-08-13 Sumitomo Special Metals Co., Ltd. Process for producing permanent magnets and permanent magnet
EP0248665A2 (en) * 1986-06-06 1987-12-09 Seiko Instruments Inc. Rare earth-iron magnet and method of making same
US7438768B2 (en) 2001-12-28 2008-10-21 Shin-Etsu Chemical Co., Ltd. Rare earth element sintered magnet and method for producing rare earth element sintered magnet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190461A2 (en) * 1984-12-24 1986-08-13 Sumitomo Special Metals Co., Ltd. Process for producing permanent magnets and permanent magnet
US4837114A (en) * 1984-12-24 1989-06-06 Sumitomo Special Metals Co., Ltd. Process for producing magnets having improved corrosion resistance
EP0248665A2 (en) * 1986-06-06 1987-12-09 Seiko Instruments Inc. Rare earth-iron magnet and method of making same
US7438768B2 (en) 2001-12-28 2008-10-21 Shin-Etsu Chemical Co., Ltd. Rare earth element sintered magnet and method for producing rare earth element sintered magnet

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