CN1792509B - 保存稳定性出色的氮化铁系磁性粉末 - Google Patents
保存稳定性出色的氮化铁系磁性粉末 Download PDFInfo
- Publication number
- CN1792509B CN1792509B CN200510137751.9A CN200510137751A CN1792509B CN 1792509 B CN1792509 B CN 1792509B CN 200510137751 A CN200510137751 A CN 200510137751A CN 1792509 B CN1792509 B CN 1792509B
- Authority
- CN
- China
- Prior art keywords
- iron nitride
- magnetic powder
- powder
- based magnetic
- atomic ratio
- 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
- 229910001337 iron nitride Inorganic materials 0.000 title claims abstract description 83
- 239000006247 magnetic powder Substances 0.000 title claims abstract description 66
- 238000003860 storage Methods 0.000 title description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 89
- 239000000843 powder Substances 0.000 claims abstract description 60
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 18
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 17
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 15
- 230000005415 magnetization Effects 0.000 claims abstract description 11
- 238000005121 nitriding Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 1
- 238000010079 rubber tapping Methods 0.000 claims 1
- 230000001976 improved effect Effects 0.000 abstract description 12
- 229910000920 Fe16N2 Inorganic materials 0.000 abstract 1
- 239000010936 titanium Substances 0.000 description 46
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 22
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 18
- 239000000463 material Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 17
- 238000003756 stirring Methods 0.000 description 14
- 238000004458 analytical method Methods 0.000 description 13
- 229910052742 iron Inorganic materials 0.000 description 13
- 239000000470 constituent Substances 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 230000003750 conditioning effect Effects 0.000 description 7
- 239000007822 coupling agent Substances 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 229910000077 silane Inorganic materials 0.000 description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004455 differential thermal analysis Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000006249 magnetic particle Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000004438 BET method Methods 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- BTANRVKWQNVYAZ-UHFFFAOYSA-N butan-2-ol Chemical class CCC(C)O BTANRVKWQNVYAZ-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 150000002829 nitrogen Chemical class 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 229910000348 titanium sulfate Inorganic materials 0.000 description 2
- 230000010415 tropism Effects 0.000 description 2
- 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 1
- 206010065042 Immune reconstitution inflammatory syndrome Diseases 0.000 description 1
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical class CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- QLZHNIAADXEJJP-UHFFFAOYSA-N Phenylphosphonic acid Chemical compound OP(O)(=O)C1=CC=CC=C1 QLZHNIAADXEJJP-UHFFFAOYSA-N 0.000 description 1
- 229920006361 Polyflon Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- -1 alkoxy silane Chemical compound 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229910052598 goethite Inorganic materials 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910001379 sodium hypophosphite Inorganic materials 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide 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
- H01F1/06—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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
-
- 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
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
-
- 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
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, 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
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Magnetic Record Carriers (AREA)
- Powder Metallurgy (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004369173 | 2004-12-21 | ||
| JP2004369173A JP4734602B2 (ja) | 2004-12-21 | 2004-12-21 | 保存安定性に優れた窒化鉄系磁性粉末 |
| JP2004-369173 | 2004-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1792509A CN1792509A (zh) | 2006-06-28 |
| CN1792509B true CN1792509B (zh) | 2011-08-03 |
Family
ID=35809741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510137751.9A Expired - Fee Related CN1792509B (zh) | 2004-12-21 | 2005-12-19 | 保存稳定性出色的氮化铁系磁性粉末 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7314666B2 (enExample) |
| EP (1) | EP1675135B1 (enExample) |
| JP (1) | JP4734602B2 (enExample) |
| CN (1) | CN1792509B (enExample) |
| DE (1) | DE602005012223D1 (enExample) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4769130B2 (ja) * | 2006-06-14 | 2011-09-07 | Ｄｏｗａエレクトロニクス株式会社 | 窒化鉄系磁性粉末およびその製造法並びに磁気記録媒体 |
| US8535634B2 (en) * | 2007-05-04 | 2013-09-17 | Advanced Materials Corporation | Iron nitride powders for use in magnetic, electromagnetic, and microelectronic devices |
| WO2014122993A1 (ja) * | 2013-02-06 | 2014-08-14 | 株式会社日清製粉グループ本社 | 磁性粒子の製造方法、磁性粒子および磁性体 |
| CN103600069A (zh) * | 2013-12-02 | 2014-02-26 | 北矿磁材科技股份有限公司 | 一种磁性金属片形粉表面的处理方法 |
| US10128031B2 (en) * | 2014-02-10 | 2018-11-13 | Nisshin Seifun Group Inc. | Method for manufacturing magnetic particles from a silicon oxide-iron core-shell structure |
| US9994949B2 (en) * | 2014-06-30 | 2018-06-12 | Regents Of The University Of Minnesota | Applied magnetic field synthesis and processing of iron nitride magnetic materials |
| JP6519419B2 (ja) * | 2015-09-10 | 2019-05-29 | Tdk株式会社 | 窒化鉄系磁性粉末及びそれを用いたボンド磁石 |
| JP7338529B2 (ja) * | 2020-03-24 | 2023-09-05 | Tdk株式会社 | 流動性付与粒子および磁性コア |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5605752A (en) * | 1994-09-28 | 1997-02-25 | Victor Company Of Japan, Ltd. | Magnetic recording medium containing magnetic powder of iron nitride |
| CN1153490A (zh) * | 1994-07-18 | 1997-07-02 | 赫加奈斯公司 | 含热塑性树脂的铁粉组合物及其制备方法 |
| CN1459433A (zh) * | 2002-05-22 | 2003-12-03 | 吉林大学 | 一种复合磁性粒子的制备方法 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0582326A (ja) * | 1991-09-19 | 1993-04-02 | Mitsubishi Materials Corp | 軟磁性粉末の製造法 |
| JP3932326B2 (ja) * | 1998-05-22 | 2007-06-20 | Ｄｏｗａエレクトロニクス株式会社 | 窒化鉄磁性材料の製法 |
| JP3848486B2 (ja) * | 1999-03-25 | 2006-11-22 | 日立マクセル株式会社 | 磁気記録媒体用窒化鉄系磁性粉末材料及びその製造方法並びに磁気記録媒体 |
| GB0117326D0 (en) | 2001-07-16 | 2001-09-05 | Univ Aberdeen | Napthoquinone-type inhibitors of protein aggregation |
| WO2003079332A1 (fr) * | 2002-03-18 | 2003-09-25 | Hitachi Maxell, Ltd. | Support d'enregistrement magnetique et cartouche d'enregistrement magnetique |
| JP3864339B2 (ja) * | 2002-07-05 | 2006-12-27 | 日立マクセル株式会社 | 磁気テープ |
| JP2004076080A (ja) | 2002-08-14 | 2004-03-11 | Tosoh Corp | 配線用薄膜およびスパッタリングターゲット |
| US6964811B2 (en) * | 2002-09-20 | 2005-11-15 | Hitachi Maxell, Ltd. | Magnetic powder, method for producing the same and magnetic recording medium comprising the same |
| WO2004075179A1 (ja) * | 2003-02-19 | 2004-09-02 | Hitachi Maxell, Ltd. | 磁気記録媒体 |
| JP4547527B2 (ja) * | 2003-05-08 | 2010-09-22 | Ｄｏｗａエレクトロニクス株式会社 | 磁性粉末およびそれを用いた磁気記録媒体並びに磁性粉末の表面処理法 |
| EP1548760A3 (en) * | 2003-11-27 | 2007-12-26 | DOWA Electronics Materials Co., Ltd. | Iron nitride magnetic powder and method of producing the powder |
| JP4734599B2 (ja) * | 2004-08-02 | 2011-07-27 | Ｄｏｗａエレクトロニクス株式会社 | 耐候性の良い窒化鉄系磁性粉末およびその製造法 |
-
2004
- 2004-12-21 JP JP2004369173A patent/JP4734602B2/ja not_active Expired - Fee Related
-
2005
- 2005-11-22 DE DE602005012223T patent/DE602005012223D1/de not_active Expired - Lifetime
- 2005-11-22 EP EP05025470A patent/EP1675135B1/en not_active Expired - Lifetime
- 2005-12-19 CN CN200510137751.9A patent/CN1792509B/zh not_active Expired - Fee Related
- 2005-12-20 US US11/311,281 patent/US7314666B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153490A (zh) * | 1994-07-18 | 1997-07-02 | 赫加奈斯公司 | 含热塑性树脂的铁粉组合物及其制备方法 |
| US5605752A (en) * | 1994-09-28 | 1997-02-25 | Victor Company Of Japan, Ltd. | Magnetic recording medium containing magnetic powder of iron nitride |
| CN1459433A (zh) * | 2002-05-22 | 2003-12-03 | 吉林大学 | 一种复合磁性粒子的制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1792509A (zh) | 2006-06-28 |
| US20060131537A1 (en) | 2006-06-22 |
| JP4734602B2 (ja) | 2011-07-27 |
| US7314666B2 (en) | 2008-01-01 |
| JP2006179567A (ja) | 2006-07-06 |
| EP1675135A1 (en) | 2006-06-28 |
| DE602005012223D1 (de) | 2009-02-26 |
| EP1675135B1 (en) | 2009-01-07 |
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