JPS647009B2 - - Google Patents
Info
- Publication number
- JPS647009B2 JPS647009B2 JP59224967A JP22496784A JPS647009B2 JP S647009 B2 JPS647009 B2 JP S647009B2 JP 59224967 A JP59224967 A JP 59224967A JP 22496784 A JP22496784 A JP 22496784A JP S647009 B2 JPS647009 B2 JP S647009B2
- Authority
- JP
- Japan
- Prior art keywords
- particles
- iron carbide
- iron
- treated
- hour
- 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
Links
- 239000002245 particle Substances 0.000 claims description 35
- 229910001567 cementite Inorganic materials 0.000 claims description 21
- 229910001566 austenite Inorganic materials 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000003513 alkali Substances 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 3
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 30
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 229910052799 carbon Inorganic materials 0.000 description 12
- 235000013980 iron oxide Nutrition 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 238000002441 X-ray diffraction Methods 0.000 description 7
- 238000000921 elemental analysis Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- -1 manganese, nickel oxides Chemical class 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910006540 α-FeOOH Inorganic materials 0.000 description 3
- 229910006299 γ-FeOOH Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910003153 β-FeOOH Inorganic materials 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910002588 FeOOH Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- CUPCBVUMRUSXIU-UHFFFAOYSA-N [Fe].OOO Chemical compound [Fe].OOO CUPCBVUMRUSXIU-UHFFFAOYSA-N 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229940044175 cobalt sulfate Drugs 0.000 description 1
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 1
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 229910021519 iron(III) oxide-hydroxide Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical class [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000003609 titanium compounds Chemical class 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/20—Carbon compounds
- B01J27/22—Carbides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/907—Oxycarbides; Sulfocarbides; Mixture of carbides
-
- 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
- G11B5/70642—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 iron oxides
- G11B5/70652—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 iron oxides gamma - Fe2 O3
- G11B5/70668—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 iron oxides gamma - Fe2 O3 containing a dopant
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Power Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59224967A JPS61106409A (ja) | 1984-10-25 | 1984-10-25 | 炭化鉄を含有する針状粒子の製法 |
| KR1019850007820A KR890003868B1 (ko) | 1984-10-25 | 1985-10-23 | 탄화철을 함유하는 침상입자의 제조방법 |
| CA000493648A CA1275782C (en) | 1984-10-25 | 1985-10-23 | Process for producing acicular particles containing an iron carbide |
| DE8585113611T DE3581363D1 (de) | 1984-10-25 | 1985-10-25 | Verfahren zur herstellung von ein eisencarbid enthaltenden nadelfoermigen teilchen. |
| EP85113611A EP0179489B1 (en) | 1984-10-25 | 1985-10-25 | A process for producing acicular particles containing an iron carbide |
| US06/918,783 US4842759A (en) | 1983-04-25 | 1986-10-14 | Acicular process for producing particulate material |
| US07/327,461 US5151206A (en) | 1983-04-25 | 1989-03-22 | Acicular iron carbide particulate material and process for producing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59224967A JPS61106409A (ja) | 1984-10-25 | 1984-10-25 | 炭化鉄を含有する針状粒子の製法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61106409A JPS61106409A (ja) | 1986-05-24 |
| JPS647009B2 true JPS647009B2 (cg-RX-API-DMAC7.html) | 1989-02-07 |
Family
ID=16822009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59224967A Granted JPS61106409A (ja) | 1983-04-25 | 1984-10-25 | 炭化鉄を含有する針状粒子の製法 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0179489B1 (cg-RX-API-DMAC7.html) |
| JP (1) | JPS61106409A (cg-RX-API-DMAC7.html) |
| KR (1) | KR890003868B1 (cg-RX-API-DMAC7.html) |
| CA (1) | CA1275782C (cg-RX-API-DMAC7.html) |
| DE (1) | DE3581363D1 (cg-RX-API-DMAC7.html) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4122216A (en) * | 1971-10-19 | 1978-10-24 | Hitachi Maxell, Ltd. | Ferro-magnetic acicular particles for recording medium and process for preparing the same |
| US3885023A (en) * | 1973-02-15 | 1975-05-20 | Phillips Petroleum Co | Preparation of iron carbide (Fe{hd 3{b C) |
| JPS6017802B2 (ja) * | 1975-09-05 | 1985-05-07 | 株式会社日立製作所 | 強磁性金属粉末の製造方法 |
| JPS6044805B2 (ja) * | 1976-08-27 | 1985-10-05 | 日本ビクター株式会社 | 磁気記録媒体の製造方法 |
| EP0123318B1 (en) * | 1983-04-25 | 1988-03-09 | Daikin Kogyo Co., Ltd. | Acicular particulate material containing iron carbide |
-
1984
- 1984-10-25 JP JP59224967A patent/JPS61106409A/ja active Granted
-
1985
- 1985-10-23 KR KR1019850007820A patent/KR890003868B1/ko not_active Expired
- 1985-10-23 CA CA000493648A patent/CA1275782C/en not_active Expired - Lifetime
- 1985-10-25 DE DE8585113611T patent/DE3581363D1/de not_active Expired - Lifetime
- 1985-10-25 EP EP85113611A patent/EP0179489B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61106409A (ja) | 1986-05-24 |
| EP0179489A2 (en) | 1986-04-30 |
| CA1275782C (en) | 1990-11-06 |
| EP0179489A3 (en) | 1987-10-21 |
| KR890003868B1 (ko) | 1989-10-05 |
| EP0179489B1 (en) | 1991-01-16 |
| KR860003632A (ko) | 1986-05-28 |
| DE3581363D1 (de) | 1991-02-21 |
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