GB1437843A - Magnetic powder and the preparation thereof - Google Patents
Magnetic powder and the preparation thereofInfo
- Publication number
- GB1437843A GB1437843A GB1246374A GB1246374A GB1437843A GB 1437843 A GB1437843 A GB 1437843A GB 1246374 A GB1246374 A GB 1246374A GB 1246374 A GB1246374 A GB 1246374A GB 1437843 A GB1437843 A GB 1437843A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cobalt
- powder
- heating
- iron oxide
- cobalt compound
- 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
- 239000006247 magnetic powder Substances 0.000 title abstract 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 6
- 150000001869 cobalt compounds Chemical class 0.000 abstract 4
- 239000000843 powder Substances 0.000 abstract 4
- 238000010438 heat treatment Methods 0.000 abstract 3
- 150000003839 salts Chemical class 0.000 abstract 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 abstract 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 abstract 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 239000006185 dispersion Substances 0.000 abstract 2
- ROFVEXUMMXZLPA-UHFFFAOYSA-N Bipyridyl Chemical group N1=CC=CC=C1C1=CC=CC=N1 ROFVEXUMMXZLPA-UHFFFAOYSA-N 0.000 abstract 1
- 229910021503 Cobalt(II) hydroxide Inorganic materials 0.000 abstract 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 abstract 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 abstract 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 229910001566 austenite Inorganic materials 0.000 abstract 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract 1
- 239000010941 cobalt Substances 0.000 abstract 1
- 229910017052 cobalt Inorganic materials 0.000 abstract 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract 1
- 229910001429 cobalt ion Inorganic materials 0.000 abstract 1
- 229910000428 cobalt oxide Inorganic materials 0.000 abstract 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 abstract 1
- ASKVAEGIVYSGNY-UHFFFAOYSA-L cobalt(ii) hydroxide Chemical compound [OH-].[OH-].[Co+2] ASKVAEGIVYSGNY-UHFFFAOYSA-L 0.000 abstract 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 abstract 1
- 229960001484 edetic acid Drugs 0.000 abstract 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- 229910017053 inorganic salt Inorganic materials 0.000 abstract 1
- 229910017604 nitric acid Inorganic materials 0.000 abstract 1
- 239000012299 nitrogen atmosphere Substances 0.000 abstract 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 abstract 1
- 235000002906 tartaric acid Nutrition 0.000 abstract 1
- 239000011975 tartaric acid Substances 0.000 abstract 1
Classifications
-
- 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
- G11B5/70678—Ferrites
- G11B5/70684—Ferro-ferrioxydes
- G11B5/70689—Magnetite
-
- 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
- G11B5/70647—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 with a skin
-
- 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
- G11B5/70678—Ferrites
- G11B5/70684—Ferro-ferrioxydes
- G11B5/70694—Non-stoechiometric ferro-ferrioxydes, e.g. berthollide
Landscapes
- Health & Medical Sciences (AREA)
- Dermatology (AREA)
- General Health & Medical Sciences (AREA)
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
- Magnetic Record Carriers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3148673A JPS5321119B2 (enrdf_load_stackoverflow) | 1973-03-20 | 1973-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1437843A true GB1437843A (en) | 1976-06-03 |
Family
ID=12332588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1246374A Expired GB1437843A (en) | 1973-03-20 | 1974-03-20 | Magnetic powder and the preparation thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5321119B2 (enrdf_load_stackoverflow) |
| DE (1) | DE2413430C3 (enrdf_load_stackoverflow) |
| GB (1) | GB1437843A (enrdf_load_stackoverflow) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2829344A1 (de) * | 1977-07-04 | 1979-01-25 | Sony Corp | Verfahren zur herstellung von magnetischen pulvern |
| US4371567A (en) * | 1980-04-28 | 1983-02-01 | Rhone-Poulenc Industries | High coercivity, cobalt-doped ferrimagnetic iron oxide particulates |
| US4741921A (en) * | 1977-04-20 | 1988-05-03 | Hitachi Maxell, Ltd. | Method for preparing cobalt-containing iron oxide magnetic particles |
| GB2240336B (en) * | 1990-01-29 | 1993-12-22 | Mitsubishi Materials Corp | Ceramic composite powders |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5324639B2 (enrdf_load_stackoverflow) * | 1974-12-13 | 1978-07-21 | ||
| JPS5523451B2 (enrdf_load_stackoverflow) * | 1975-02-20 | 1980-06-23 | ||
| JPS525497A (en) * | 1975-07-02 | 1977-01-17 | Fuji Photo Film Co Ltd | Ferromagnetic grit manufacturing process |
| JPS5853493B2 (ja) * | 1975-07-02 | 1983-11-29 | 富士写真フイルム株式会社 | キヨウジセイフンマツノセイホウ |
| JPS608606B2 (ja) * | 1975-07-02 | 1985-03-04 | 富士写真フイルム株式会社 | 強磁性粉末の製法 |
| JPS5814729B2 (ja) * | 1975-08-01 | 1983-03-22 | 富士写真フイルム株式会社 | キヨウジセイフンマツノセイゾウホウホウ |
| JPS5853494B2 (ja) * | 1977-04-20 | 1983-11-29 | 日立マクセル株式会社 | 磁気記録用強磁性粉末の製造方法 |
| JPS6034244B2 (ja) * | 1977-06-23 | 1985-08-07 | 日立マクセル株式会社 | 強磁性粉末の製造方法 |
| DE2903593C3 (de) * | 1979-01-31 | 1982-05-06 | Bayer Ag, 5090 Leverkusen | Kobalt-dotierte ferrimagnetische Eisenoxide und Verfahren zu deren Herstellung |
| JPS5677926A (en) * | 1979-11-28 | 1981-06-26 | Tdk Corp | Magnetic recording medium using cobalt adhesion type iron oxide |
| US20100199406A1 (en) | 2009-02-06 | 2010-08-12 | Nike, Inc. | Thermoplastic Non-Woven Textile Elements |
| US9682512B2 (en) | 2009-02-06 | 2017-06-20 | Nike, Inc. | Methods of joining textiles and other elements incorporating a thermoplastic polymer material |
| CN114226744B (zh) * | 2021-11-25 | 2024-09-20 | 中国科学院金属研究所 | 一种形状可控的坡莫合金粉体微波吸收剂的制备方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3573980A (en) * | 1968-02-19 | 1971-04-06 | Minnesota Mining & Mfg | Method of making magnetic particles and recording tape |
-
1973
- 1973-03-20 JP JP3148673A patent/JPS5321119B2/ja not_active Expired
-
1974
- 1974-03-20 DE DE19742413430 patent/DE2413430C3/de not_active Expired
- 1974-03-20 GB GB1246374A patent/GB1437843A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4741921A (en) * | 1977-04-20 | 1988-05-03 | Hitachi Maxell, Ltd. | Method for preparing cobalt-containing iron oxide magnetic particles |
| US4857417A (en) * | 1977-04-20 | 1989-08-15 | Hitachi Maxell, Ltd. | Cobalt-containing iron oxide magnetic particles and method for the preparation of the same |
| DE2829344A1 (de) * | 1977-07-04 | 1979-01-25 | Sony Corp | Verfahren zur herstellung von magnetischen pulvern |
| US4371567A (en) * | 1980-04-28 | 1983-02-01 | Rhone-Poulenc Industries | High coercivity, cobalt-doped ferrimagnetic iron oxide particulates |
| GB2240336B (en) * | 1990-01-29 | 1993-12-22 | Mitsubishi Materials Corp | Ceramic composite powders |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS49119196A (enrdf_load_stackoverflow) | 1974-11-14 |
| JPS5321119B2 (enrdf_load_stackoverflow) | 1978-06-30 |
| DE2413430A1 (de) | 1974-10-03 |
| DE2413430C3 (de) | 1981-05-27 |
| DE2413430B2 (de) | 1980-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19940319 |