DE69032805T2 - Verfahren zur Beschichtung von Permanentmagneten der intermetallischen Verbindung R2T14B - Google Patents

Verfahren zur Beschichtung von Permanentmagneten der intermetallischen Verbindung R2T14B

Info

Publication number
DE69032805T2
DE69032805T2 DE69032805T DE69032805T DE69032805T2 DE 69032805 T2 DE69032805 T2 DE 69032805T2 DE 69032805 T DE69032805 T DE 69032805T DE 69032805 T DE69032805 T DE 69032805T DE 69032805 T2 DE69032805 T2 DE 69032805T2
Authority
DE
Germany
Prior art keywords
r2t14b
permanent magnets
intermetallic compound
coating permanent
coating
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
DE69032805T
Other languages
English (en)
Other versions
DE69032805D1 (de
Inventor
Hiroshi Momotani
Tsutomu Otsuka
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.)
Tokin Corp
Original Assignee
Tokin Corp
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
Priority claimed from JP1101421A external-priority patent/JP2779830B2/ja
Application filed by Tokin Corp filed Critical Tokin Corp
Publication of DE69032805D1 publication Critical patent/DE69032805D1/de
Application granted granted Critical
Publication of DE69032805T2 publication Critical patent/DE69032805T2/de
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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electroplating Methods And Accessories (AREA)
DE69032805T 1989-04-20 1990-08-31 Verfahren zur Beschichtung von Permanentmagneten der intermetallischen Verbindung R2T14B Expired - Fee Related DE69032805T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1101421A JP2779830B2 (ja) 1988-04-20 1989-04-20 Ｒ▲下２▼ｔ▲下１▼▲下４▼ｂ金属間化合物永久磁石のメッキ膜用有機溶媒電気メッキ液
PCT/JP1990/001113 WO1992004484A1 (en) 1989-04-20 1990-08-31 Electroplating bath using organic solvent for plating permanent magnet of r2t14b intermetallic compound
US07/873,243 US5290425A (en) 1989-04-20 1992-04-24 Organic solvent electrolyte for plating film of R2 T14 B intermetallic compound permanent magnet

Publications (2)

Publication Number Publication Date
DE69032805D1 DE69032805D1 (de) 1999-01-14
DE69032805T2 true DE69032805T2 (de) 1999-06-10

Family

ID=27306306

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69032805T Expired - Fee Related DE69032805T2 (de) 1989-04-20 1990-08-31 Verfahren zur Beschichtung von Permanentmagneten der intermetallischen Verbindung R2T14B

Country Status (4)

Country Link
US (1) US5290425A (de)
EP (1) EP0499638B1 (de)
DE (1) DE69032805T2 (de)
WO (1) WO1992004484A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3883561B2 (ja) * 2003-03-05 2007-02-21 Ｔｄｋ株式会社 希土類磁石の製造方法
JP5093215B2 (ja) * 2009-11-26 2012-12-12 トヨタ自動車株式会社 焼結希土類磁石の製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE822893A (fr) * 1973-12-13 1975-04-01 Perfectionnements relatifs au depot electroytique
US3875029A (en) * 1974-02-19 1975-04-01 R O Hull & Company Inc Plating bath for electrodeposition of bright tin and tin-lead alloy
GB1552263A (en) * 1977-03-04 1979-09-12 Bnf Metals Tech Centre Trivalent chromium plating baths
JPS59113195A (ja) * 1982-12-17 1984-06-29 イ−・アイ・デユ・ポン・ドウ・ヌム−ル・アンド・カンパニ− 亜鉛めつき法
JPS6296692A (ja) * 1985-10-22 1987-05-06 Kobe Steel Ltd ニツケル−硼素合金めつき方法
JP2602650B2 (ja) * 1987-04-16 1997-04-23 株式会社トーキン 耐酸化性に優れた永久磁石の製造方法
DE3804303A1 (de) * 1988-02-12 1989-08-24 Studiengesellschaft Kohle Mbh Verfahren zur haftvermittlung zwischen metallwerkstoffen und glavanischen aluminiumschichten und hierbei eingesetzte nichtwaessrige elektrolyte

Also Published As

Publication number Publication date
EP0499638A1 (de) 1992-08-26
US5290425A (en) 1994-03-01
EP0499638B1 (de) 1998-12-02
DE69032805D1 (de) 1999-01-14
EP0499638A4 (de) 1994-10-12
WO1992004484A1 (en) 1992-03-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: NEC TOKIN CORP., SENDAI, MIYAGI, JP

8339 Ceased/non-payment of the annual fee