JPH0432523B2 - - Google Patents
Info
- Publication number
- JPH0432523B2 JPH0432523B2 JP63237125A JP23712588A JPH0432523B2 JP H0432523 B2 JPH0432523 B2 JP H0432523B2 JP 63237125 A JP63237125 A JP 63237125A JP 23712588 A JP23712588 A JP 23712588A JP H0432523 B2 JPH0432523 B2 JP H0432523B2
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- layer
- electroless plating
- magnetic properties
- less
- 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 - Lifetime
Links
- 229910052759 nickel Inorganic materials 0.000 claims description 46
- 238000007772 electroless plating Methods 0.000 claims description 40
- 239000010953 base metal Substances 0.000 claims description 25
- 238000009713 electroplating Methods 0.000 claims description 24
- 229910000510 noble metal Inorganic materials 0.000 claims description 23
- 230000007797 corrosion Effects 0.000 claims description 22
- 238000005260 corrosion Methods 0.000 claims description 22
- 229910052796 boron Inorganic materials 0.000 claims description 18
- 229910052698 phosphorus Inorganic materials 0.000 claims description 17
- 239000000084 colloidal system Substances 0.000 claims description 16
- 230000006866 deterioration Effects 0.000 claims description 16
- 229910052763 palladium Inorganic materials 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 229910052718 tin Inorganic materials 0.000 claims description 12
- 229910052697 platinum Inorganic materials 0.000 claims description 10
- 229910052709 silver Inorganic materials 0.000 claims description 10
- 229910052737 gold Inorganic materials 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 6
- 229910052779 Neodymium Inorganic materials 0.000 claims description 6
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- 229910052691 Erbium Inorganic materials 0.000 claims description 4
- 229910052693 Europium Inorganic materials 0.000 claims description 4
- 229910052688 Gadolinium 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
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- 239000010409 thin film Substances 0.000 claims description 4
- 229910052789 astatine Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- -1 etc. Inorganic materials 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 78
- 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 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 229910052761 rare earth metal Inorganic materials 0.000 description 15
- 239000000203 mixture Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 11
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 239000012071 phase Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000004020 luminiscence type Methods 0.000 description 6
- 239000002932 luster Substances 0.000 description 6
- 239000002609 medium Substances 0.000 description 6
- 150000002910 rare earth metals Chemical class 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 229910052742 iron Inorganic materials 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
- 230000007423 decrease Effects 0.000 description 4
- 239000002245 particle Substances 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
- 229910017052 cobalt Inorganic materials 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910001379 sodium hypophosphite Inorganic materials 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 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 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 150000002815 nickel Chemical class 0.000 description 2
- 239000011148 porous material 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
- 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
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- 229910052765 Lutetium 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
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- JZQOJFLIJNRDHK-CMDGGOBGSA-N alpha-irone Chemical compound CC1CC=C(C)C(\C=C\C(C)=O)C1(C)C JZQOJFLIJNRDHK-CMDGGOBGSA-N 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000003125 aqueous solvent Substances 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
- RJTANRZEWTUVMA-UHFFFAOYSA-N boron;n-methylmethanamine Chemical compound [B].CNC RJTANRZEWTUVMA-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 239000002612 dispersion medium Substances 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
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000008282 halocarbons Chemical class 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
- 238000007733 ion plating Methods 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 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
- 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
- 239000010970 precious metal Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 150000003839 salts Chemical class 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
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000001947 vapour-phase growth Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910000859 α-Fe 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)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Electroplating Methods And Accessories (AREA)
- Other Surface Treatments For Metallic Materials (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 JPH0283905A (ja) | 1990-03-26 |
| JPH0432523B2 true 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) |
Families Citing this family (20)
| 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 |
| JP3135174B2 (ja) * | 1991-11-27 | 2001-02-13 | 日立金属株式会社 | 耐食性を改善したｒ−ｔｍ−ｂ系永久磁石及びその製造方法 |
| 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 |
| JP4552161B2 (ja) * | 1999-11-09 | 2010-09-29 | 日立金属株式会社 | 耐食性のすぐれた超小型磁石 |
| GB0300753D0 (en) * | 2003-01-14 | 2003-02-12 | Rolls Royce Plc | Rare earth-transmission metal alloy articles |
| TWI229150B (en) * | 2003-03-05 | 2005-03-11 | Tdk Corp | Rare earth metal magnet and plating bath |
| BR112015004464A2 (pt) | 2012-08-31 | 2017-07-04 | Shinetsu Chemical Co | método de produção de ímãs permanentes de terra rara |
| WO2014034851A1 (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 |
| EP2892063B1 (en) * | 2012-08-31 | 2018-08-15 | Shin-Etsu Chemical Co., Ltd. | Production method for rare earth permanent magnet |
| DE102013224108A1 (de) * | 2013-11-26 | 2015-06-11 | Siemens Aktiengesellschaft | Dauermagnet mit erhöhter Koerzitivfeldstärke |
| JP6191497B2 (ja) | 2014-02-19 | 2017-09-06 | 信越化学工業株式会社 | 電着装置及び希土類永久磁石の製造方法 |
| JP6090589B2 (ja) | 2014-02-19 | 2017-03-08 | 信越化学工業株式会社 | 希土類永久磁石の製造方法 |
| US9905345B2 (en) * | 2015-09-21 | 2018-02-27 | Apple Inc. | Magnet electroplating |
| US10553352B2 (en) * | 2016-03-18 | 2020-02-04 | Apple Inc. | Corrosion resistant magnet assembly |
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 | |
| GB1596314A (en) * | 1978-02-02 | 1981-08-26 | Fujimoto Co Ltd | Magneto-therapeutic device |
| JPS5964733A (ja) * | 1982-09-27 | 1984-04-12 | Sumitomo Special Metals Co Ltd | 永久磁石 |
| JPS5946008A (ja) * | 1982-08-21 | 1984-03-15 | Sumitomo Special Metals Co Ltd | 永久磁石 |
| CA1316375C (en) * | 1982-08-21 | 1993-04-20 | Masato Sagawa | Magnetic materials and permanent magnets |
| JPS59132104A (ja) * | 1983-01-19 | 1984-07-30 | Sumitomo Special Metals Co Ltd | 永久磁石 |
| JPS5989401A (ja) * | 1982-11-15 | 1984-05-23 | Sumitomo Special Metals Co Ltd | 永久磁石 |
| CA1315571C (en) * | 1982-08-21 | 1993-04-06 | Masato Sagawa | Magnetic materials and permanent magnets |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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
Also Published As
| Publication number | Publication date |
|---|---|
| DE68905987D1 (de) | 1993-05-19 |
| US4959273A (en) | 1990-09-25 |
| DE68905987T2 (de) | 1993-07-22 |
| EP0361308B1 (en) | 1993-04-14 |
| EP0361308A1 (en) | 1990-04-04 |
| JPH0283905A (ja) | 1990-03-26 |
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