DE69032805D1 - Verfahren zur Beschichtung von Permanentmagneten der intermetallischen Verbindung R2T14B - Google Patents
Verfahren zur Beschichtung von Permanentmagneten der intermetallischen Verbindung R2T14BInfo
- Publication number
- DE69032805D1 DE69032805D1 DE69032805T DE69032805T DE69032805D1 DE 69032805 D1 DE69032805 D1 DE 69032805D1 DE 69032805 T DE69032805 T DE 69032805T DE 69032805 T DE69032805 T DE 69032805T DE 69032805 D1 DE69032805 D1 DE 69032805D1
- 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
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)
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 true DE69032805D1 (de) | 1999-01-14 |
DE69032805T2 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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100738840B1 (ko) * | 2003-03-05 | 2007-07-12 | 티디케이가부시기가이샤 | 희토류 자석의 제조방법 및 도금욕 |
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)
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 |
-
1990
- 1990-08-31 EP EP90912946A patent/EP0499638B1/de not_active Expired - Lifetime
- 1990-08-31 DE DE69032805T patent/DE69032805T2/de not_active Expired - Fee Related
- 1990-08-31 WO PCT/JP1990/001113 patent/WO1992004484A1/ja active IP Right Grant
-
1992
- 1992-04-24 US US07/873,243 patent/US5290425A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0499638A1 (de) | 1992-08-26 |
WO1992004484A1 (en) | 1992-03-19 |
US5290425A (en) | 1994-03-01 |
EP0499638B1 (de) | 1998-12-02 |
EP0499638A4 (de) | 1994-10-12 |
DE69032805T2 (de) | 1999-06-10 |
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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 |