JPS5625909A - Preparation of magnetic grain powder consisting of needle crystal alloy of iron, cobalt and zinc - Google Patents
Preparation of magnetic grain powder consisting of needle crystal alloy of iron, cobalt and zincInfo
- Publication number
- JPS5625909A JPS5625909A JP10234179A JP10234179A JPS5625909A JP S5625909 A JPS5625909 A JP S5625909A JP 10234179 A JP10234179 A JP 10234179A JP 10234179 A JP10234179 A JP 10234179A JP S5625909 A JPS5625909 A JP S5625909A
- Authority
- JP
- Japan
- Prior art keywords
- cobalt
- zinc
- specific
- needle crystal
- heating
- 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
- 239000011701 zinc Substances 0.000 title abstract 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title abstract 6
- 239000010941 cobalt Substances 0.000 title abstract 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title abstract 6
- 239000013078 crystal Substances 0.000 title abstract 6
- 239000000843 powder Substances 0.000 title abstract 4
- 229910000531 Co alloy Inorganic materials 0.000 title abstract 3
- 229910000640 Fe alloy Inorganic materials 0.000 title abstract 3
- 229910001297 Zn alloy Inorganic materials 0.000 title abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 5
- 229910052725 zinc Inorganic materials 0.000 abstract 4
- 229910017052 cobalt Inorganic materials 0.000 abstract 3
- 239000003513 alkali Substances 0.000 abstract 2
- 229910052598 goethite Inorganic materials 0.000 abstract 2
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 229910021503 Cobalt(II) hydroxide Inorganic materials 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052595 hematite Inorganic materials 0.000 abstract 1
- 239000011019 hematite Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 abstract 1
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 abstract 1
- 239000000696 magnetic material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 229910021511 zinc hydroxide Inorganic materials 0.000 abstract 1
Landscapes
- Compounds Of Iron (AREA)
- Paints Or Removers (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Magnetic Record Carriers (AREA)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE: To obtain the magnetic grain powder consisting of needle crystal alloy of iron, cobalt and zinc which has superior magnetic and powder charactersitics and is suitable especially for magnetic materials for magnetic recording by using materials consisting of the needle crystal goethite grain containing specific cobalt and zinc, which are produced by the specific procedures, and applying heating and reduction to them under specific conditions.
CONSTITUTION: Water-soluble silicic salt should be previously added to the alkali solution which is to be used to obtain the solution containing Fe(OH)2, Co(OH)2 and Zn(OH)2 in a fixed ratio and indicating pH12 so that silicon occupies 0.1W0.7atom% against the whole metallic atoms (Fe, Co and Zn) and, after reacting the alkali solution mentioned above with ferrous salt and so on, the mixture is oxidized to produce the needle crystal grain containing goethite cobalt and zinc; after heating and dehydrating materials obtained from the produced grains, needle crystal hematite grains with cobalt and zinc, which have a fixed longitudinal axis length and a fixed axial ratio, are produced, burned by heating under a specific steam partial pressure consisting of heating steam and nonreduction gas and a specific temperature and reduced while heating at a specific temperature to obtain the magnetic grain powder consisting of needle crystal alloy of iron, cobalt and zinc with a specific average longitudinal axis length and a specific surface area.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54102341A JPS5921922B2 (en) | 1979-08-10 | 1979-08-10 | Method for producing acicular Fe-Co-Zn alloy magnetic particle powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54102341A JPS5921922B2 (en) | 1979-08-10 | 1979-08-10 | Method for producing acicular Fe-Co-Zn alloy magnetic particle powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5625909A true JPS5625909A (en) | 1981-03-12 |
| JPS5921922B2 JPS5921922B2 (en) | 1984-05-23 |
Family
ID=14324794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54102341A Expired JPS5921922B2 (en) | 1979-08-10 | 1979-08-10 | Method for producing acicular Fe-Co-Zn alloy magnetic particle powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5921922B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4409020A (en) * | 1983-01-24 | 1983-10-11 | The United States Of America As Represented By The Secretary Of The Interior | Recovery of metals from grinding sludges |
| JPS596502A (en) * | 1982-07-05 | 1984-01-13 | Mitsui Toatsu Chem Inc | Manufacture of improved ferromagnetic iron powder |
| CN100417475C (en) * | 2006-03-10 | 2008-09-10 | 同济大学 | A method for producing metal zinc powder with zinc dust and zinc dross |
-
1979
- 1979-08-10 JP JP54102341A patent/JPS5921922B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS596502A (en) * | 1982-07-05 | 1984-01-13 | Mitsui Toatsu Chem Inc | Manufacture of improved ferromagnetic iron powder |
| US4409020A (en) * | 1983-01-24 | 1983-10-11 | The United States Of America As Represented By The Secretary Of The Interior | Recovery of metals from grinding sludges |
| CN100417475C (en) * | 2006-03-10 | 2008-09-10 | 同济大学 | A method for producing metal zinc powder with zinc dust and zinc dross |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5921922B2 (en) | 1984-05-23 |
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