JPH0283905A - 耐食性永久磁石およびその製造方法 - Google Patents
耐食性永久磁石およびその製造方法Info
- Publication number
- JPH0283905A JPH0283905A JP63237125A JP23712588A JPH0283905A JP H0283905 A JPH0283905 A JP H0283905A JP 63237125 A JP63237125 A JP 63237125A JP 23712588 A JP23712588 A JP 23712588A JP H0283905 A JPH0283905 A JP H0283905A
- Authority
- JP
- Japan
- Prior art keywords
- atomic
- permanent magnet
- layer
- base metal
- electroless plating
- 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.)
- Granted
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 25
- 230000007797 corrosion Effects 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 43
- 238000007772 electroless plating Methods 0.000 claims abstract description 40
- 238000009713 electroplating Methods 0.000 claims abstract description 34
- 239000010953 base metal Substances 0.000 claims abstract description 29
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 22
- 229910052796 boron Inorganic materials 0.000 claims abstract description 20
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 17
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 17
- 230000006866 deterioration Effects 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 9
- 229910052709 silver Inorganic materials 0.000 claims abstract description 9
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 5
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 5
- 239000000084 colloidal system Substances 0.000 claims description 15
- 229910052718 tin Inorganic materials 0.000 claims description 9
- 229910052737 gold Inorganic materials 0.000 claims description 8
- 229910052697 platinum Inorganic materials 0.000 claims description 8
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 5
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 4
- 229910052765 Lutetium Inorganic materials 0.000 claims description 4
- 229910052772 Samarium Inorganic materials 0.000 claims description 4
- 229910052775 Thulium Inorganic materials 0.000 claims description 4
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 4
- 239000010409 thin film Substances 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 102100036439 Amyloid beta precursor protein binding family B member 1 Human genes 0.000 claims 2
- 101000928670 Homo sapiens Amyloid beta precursor protein binding family B member 1 Proteins 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 abstract description 8
- -1 by 2-28atomic% Inorganic materials 0.000 abstract description 4
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 abstract description 3
- 150000002739 metals Chemical class 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000002075 main ingredient Substances 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 74
- 238000007747 plating Methods 0.000 description 31
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 28
- 239000000243 solution Substances 0.000 description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 23
- 239000000203 mixture Substances 0.000 description 16
- 229910052761 rare earth metal Inorganic materials 0.000 description 13
- 239000012071 phase Substances 0.000 description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 8
- 238000004020 luminiscence type Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000002932 luster Substances 0.000 description 5
- 239000002609 medium Substances 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 150000002910 rare earth metals Chemical class 0.000 description 5
- 238000004611 spectroscopical analysis Methods 0.000 description 5
- 238000004381 surface treatment Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 4
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 229910021126 PdPt Inorganic materials 0.000 description 3
- 239000012736 aqueous medium Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910001379 sodium hypophosphite Inorganic materials 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 229910052691 Erbium Inorganic materials 0.000 description 2
- 229910052693 Europium Inorganic materials 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 2
- 239000001509 sodium citrate Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- BOSAWIQFTJIYIS-UHFFFAOYSA-N 1,1,1-trichloro-2,2,2-trifluoroethane Chemical compound FC(F)(F)C(Cl)(Cl)Cl BOSAWIQFTJIYIS-UHFFFAOYSA-N 0.000 description 1
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- GUTLYIVDDKVIGB-NJFSPNSNSA-N cobalt-61 Chemical compound [61Co] GUTLYIVDDKVIGB-NJFSPNSNSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- GSWAOPJLTADLTN-UHFFFAOYSA-N oxidanimine Chemical compound [O-][NH3+] GSWAOPJLTADLTN-UHFFFAOYSA-N 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010944 silver (metal) Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T428/12063—Nonparticulate metal component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T428/12063—Nonparticulate metal component
- Y10T428/1209—Plural particulate metal components
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Hard Magnetic Materials (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Electroplating Methods And Accessories (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63237125A JPH0283905A (ja) | 1988-09-20 | 1988-09-20 | 耐食性永久磁石およびその製造方法 |
| US07/408,243 US4959273A (en) | 1988-09-20 | 1989-09-18 | Corrosion-resistant permanent magnet and method for preparing the same |
| EP89117425A EP0361308B1 (en) | 1988-09-20 | 1989-09-20 | Corrosion-resistant permanent magnet and method for preparing the same |
| DE8989117425T DE68905987T2 (de) | 1988-09-20 | 1989-09-20 | Korrosionsfester dauermagnet und herstellungsverfahren. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63237125A JPH0283905A (ja) | 1988-09-20 | 1988-09-20 | 耐食性永久磁石およびその製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0283905A true JPH0283905A (ja) | 1990-03-26 |
| JPH0432523B2 JPH0432523B2 (enExample) | 1992-05-29 |
Family
ID=17010782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63237125A Granted JPH0283905A (ja) | 1988-09-20 | 1988-09-20 | 耐食性永久磁石およびその製造方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4959273A (enExample) |
| EP (1) | EP0361308B1 (enExample) |
| JP (1) | JPH0283905A (enExample) |
| DE (1) | DE68905987T2 (enExample) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05205926A (ja) * | 1991-11-27 | 1993-08-13 | Hitachi Metals Ltd | 耐食性を改善した希土類・遷移金属系永久磁石及びその製造方法 |
| JP2001135511A (ja) * | 1999-11-09 | 2001-05-18 | Sumitomo Special Metals Co Ltd | 耐食性のすぐれた超小型磁石 |
| WO2014034854A1 (ja) * | 2012-08-31 | 2014-03-06 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
| WO2014034849A1 (ja) * | 2012-08-31 | 2014-03-06 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
| JP2014063997A (ja) * | 2012-08-31 | 2014-04-10 | Shin Etsu Chem Co Ltd | 希土類永久磁石の製造方法 |
| JP2015154051A (ja) * | 2014-02-19 | 2015-08-24 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
| US10017871B2 (en) | 2014-02-19 | 2018-07-10 | Shin-Etsu Chemical Co., Ltd. | Electrodepositing apparatus and preparation of rare earth permanent magnet |
| US10553352B2 (en) * | 2016-03-18 | 2020-02-04 | Apple Inc. | Corrosion resistant magnet assembly |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0258729A (ja) * | 1988-08-24 | 1990-02-27 | Nec Corp | 磁気ディスク基板およびその製造方法 |
| US5314756A (en) * | 1991-11-27 | 1994-05-24 | Hitachi Metals, Ltd. | Permanent magnet of rare-earth-element/transition-metal system having improved corrosion resistance and manufacturing method thereof |
| JPH05166618A (ja) * | 1991-12-17 | 1993-07-02 | Hitachi Metals Ltd | 永久磁石 |
| US5926925A (en) * | 1994-01-06 | 1999-07-27 | Hicks; Joel R. | Magnetic sock holder |
| US5840432A (en) * | 1995-02-13 | 1998-11-24 | Hitachi Chemical Company, Ltd. | Electroconductive paste |
| DE19512888A1 (de) * | 1995-04-06 | 1996-10-10 | Vacuumschmelze Gmbh | Verfahren zur elektrolytischen Beschichtung von Seltene Erden enthaltenden Dauermagneten mit minimaler Oberflächenschädigung |
| DE19514018C1 (de) * | 1995-04-13 | 1996-11-28 | Hoechst Ceram Tec Ag | Verfahren zur Herstellung eines metallbeschichteten, metallisierten Substrats aus Aluminiumnitridkeramik und damit erhaltenes metallbeschichtetes Substrat |
| DE19751710A1 (de) * | 1997-11-21 | 1999-05-27 | Leybold Systems Gmbh | Magnetkörper mit Korrosionsschutzbeschichtung |
| GB0300753D0 (en) * | 2003-01-14 | 2003-02-12 | Rolls Royce Plc | Rare earth-transmission metal alloy articles |
| WO2004079055A1 (ja) * | 2003-03-05 | 2004-09-16 | Tdk Corporation | 希土類磁石の製造方法およびめっき浴 |
| DE102013224108A1 (de) * | 2013-11-26 | 2015-06-11 | Siemens Aktiengesellschaft | Dauermagnet mit erhöhter Koerzitivfeldstärke |
| US9905345B2 (en) * | 2015-09-21 | 2018-02-27 | Apple Inc. | Magnet electroplating |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1389867A (fr) * | 1963-03-25 | 1965-02-19 | Philips Nv | Procédé de fabrication d'un corps magnétique en manganèse-bismuth |
| US3998669A (en) * | 1974-09-20 | 1976-12-21 | Th. Goldschmidt Ag | Permanent magnet on the basis of cobalt-rare earth alloys and method for its production |
| CH612287A5 (enExample) * | 1975-05-22 | 1979-07-13 | Bbc Brown Boveri & Cie | |
| US4162672A (en) * | 1978-02-02 | 1979-07-31 | Fujimoto Company, Limited | Magneto-therapeutic device |
| JPS5989401A (ja) * | 1982-11-15 | 1984-05-23 | Sumitomo Special Metals Co Ltd | 永久磁石 |
| JPS5964733A (ja) * | 1982-09-27 | 1984-04-12 | Sumitomo Special Metals Co Ltd | 永久磁石 |
| JPS59132104A (ja) * | 1983-01-19 | 1984-07-30 | Sumitomo Special Metals Co Ltd | 永久磁石 |
| CA1316375C (en) * | 1982-08-21 | 1993-04-20 | Masato Sagawa | Magnetic materials and permanent magnets |
| CA1315571C (en) * | 1982-08-21 | 1993-04-06 | Masato Sagawa | Magnetic materials and permanent magnets |
| JPS5946008A (ja) * | 1982-08-21 | 1984-03-15 | Sumitomo Special Metals Co Ltd | 永久磁石 |
| JPS6034005A (ja) * | 1983-08-04 | 1985-02-21 | Sumitomo Special Metals Co Ltd | 永久磁石 |
| JPS6054406A (ja) * | 1983-09-03 | 1985-03-28 | Sumitomo Special Metals Co Ltd | 耐酸化性のすぐれた永久磁石 |
| JPS60153109A (ja) * | 1984-01-21 | 1985-08-12 | Sumitomo Special Metals Co Ltd | 永久磁石体 |
| US4668283A (en) * | 1984-06-25 | 1987-05-26 | Mitsui Toatsu Chemicals, Incorporated | Magnetic powder and production process thereof |
| JPS61166117A (ja) * | 1985-01-18 | 1986-07-26 | Sumitomo Special Metals Co Ltd | 耐食性のすぐれた永久磁石の製造方法 |
| JPH0682574B2 (ja) * | 1985-01-18 | 1994-10-19 | 住友特殊金属株式会社 | 耐食性のすぐれた永久磁石の製造方法 |
| CN1007847B (zh) * | 1984-12-24 | 1990-05-02 | 住友特殊金属株式会社 | 制造具有改进耐蚀性磁铁的方法 |
| JPS61166115A (ja) * | 1985-01-18 | 1986-07-26 | Sumitomo Special Metals Co Ltd | 耐食性のすぐれた永久磁石の製造方法 |
| JPS61150201A (ja) * | 1984-12-24 | 1986-07-08 | Sumitomo Special Metals Co Ltd | 耐食性のすぐれた永久磁石 |
| AT386554B (de) * | 1986-08-04 | 1988-09-12 | Treibacher Chemische Werke Ag | Verfahren zur herstellung korrosionsbestaendiger, hartmagnetischer pulver fuer die magneterzeugung, magnete aus hartmagnetischem pulver und verfahren zu deren herstellung |
| JPS63255376A (ja) * | 1987-04-13 | 1988-10-21 | Sumitomo Special Metals Co Ltd | 耐食性永久磁石の製造方法 |
| JPH0831364B2 (ja) * | 1987-04-23 | 1996-03-27 | 住友特殊金属株式会社 | 耐食性永久磁石の製造方法 |
| JP2724391B2 (ja) * | 1987-03-26 | 1998-03-09 | 住友特殊金属株式会社 | 耐食性永久磁石 |
| JPH0831363B2 (ja) * | 1987-04-13 | 1996-03-27 | 住友特殊金属株式会社 | 耐食性永久磁石の製造方法 |
-
1988
- 1988-09-20 JP JP63237125A patent/JPH0283905A/ja active Granted
-
1989
- 1989-09-18 US US07/408,243 patent/US4959273A/en not_active Expired - Lifetime
- 1989-09-20 EP EP89117425A patent/EP0361308B1/en not_active Expired - Lifetime
- 1989-09-20 DE DE8989117425T patent/DE68905987T2/de not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05205926A (ja) * | 1991-11-27 | 1993-08-13 | Hitachi Metals Ltd | 耐食性を改善した希土類・遷移金属系永久磁石及びその製造方法 |
| JP2001135511A (ja) * | 1999-11-09 | 2001-05-18 | Sumitomo Special Metals Co Ltd | 耐食性のすぐれた超小型磁石 |
| JP2014063996A (ja) * | 2012-08-31 | 2014-04-10 | Shin Etsu Chem Co Ltd | 希土類永久磁石の製造方法 |
| WO2014034849A1 (ja) * | 2012-08-31 | 2014-03-06 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
| JP2014063997A (ja) * | 2012-08-31 | 2014-04-10 | Shin Etsu Chem Co Ltd | 希土類永久磁石の製造方法 |
| JP2014063998A (ja) * | 2012-08-31 | 2014-04-10 | Shin Etsu Chem Co Ltd | 希土類永久磁石の製造方法 |
| WO2014034854A1 (ja) * | 2012-08-31 | 2014-03-06 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
| US10138564B2 (en) | 2012-08-31 | 2018-11-27 | Shin-Etsu Chemical Co., Ltd. | Production method for rare earth permanent magnet |
| US10179955B2 (en) | 2012-08-31 | 2019-01-15 | Shin-Etsu Chemical Co., Ltd. | Production method for rare earth permanent magnet |
| US10181377B2 (en) | 2012-08-31 | 2019-01-15 | Shin-Etsu Chemical Co., Ltd. | Production method for rare earth permanent magnet |
| JP2015154051A (ja) * | 2014-02-19 | 2015-08-24 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
| US9845545B2 (en) | 2014-02-19 | 2017-12-19 | Shin-Etsu Chemical Co., Ltd. | Preparation of rare earth permanent magnet |
| US10017871B2 (en) | 2014-02-19 | 2018-07-10 | Shin-Etsu Chemical Co., Ltd. | Electrodepositing apparatus and preparation of rare earth permanent magnet |
| US10526715B2 (en) | 2014-02-19 | 2020-01-07 | Shin-Etsu Chemical Co., Ltd. | Preparation of rare earth permanent magnet |
| US10553352B2 (en) * | 2016-03-18 | 2020-02-04 | Apple Inc. | Corrosion resistant magnet assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| US4959273A (en) | 1990-09-25 |
| EP0361308B1 (en) | 1993-04-14 |
| EP0361308A1 (en) | 1990-04-04 |
| DE68905987T2 (de) | 1993-07-22 |
| JPH0432523B2 (enExample) | 1992-05-29 |
| DE68905987D1 (de) | 1993-05-19 |
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