JPS5625901A - Ferromagnetic powder and its preparation - Google Patents
Ferromagnetic powder and its preparationInfo
- Publication number
- JPS5625901A JPS5625901A JP10094279A JP10094279A JPS5625901A JP S5625901 A JPS5625901 A JP S5625901A JP 10094279 A JP10094279 A JP 10094279A JP 10094279 A JP10094279 A JP 10094279A JP S5625901 A JPS5625901 A JP S5625901A
- Authority
- JP
- Japan
- Prior art keywords
- grains
- compounds
- aluminum
- silicon compounds
- main component
- 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.)
- Pending
Links
- 230000005294 ferromagnetic effect Effects 0.000 title abstract 3
- 239000000843 powder Substances 0.000 title abstract 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 4
- 150000003377 silicon compounds Chemical class 0.000 abstract 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- CUPCBVUMRUSXIU-UHFFFAOYSA-N [Fe].OOO Chemical group [Fe].OOO CUPCBVUMRUSXIU-UHFFFAOYSA-N 0.000 abstract 2
- 229910021519 iron(III) oxide-hydroxide Inorganic materials 0.000 abstract 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 230000005291 magnetic effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 229920002545 silicone oil Polymers 0.000 abstract 1
- 229910003145 α-Fe2O3 Inorganic materials 0.000 abstract 1
- 229910006540 α-FeOOH Inorganic materials 0.000 abstract 1
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE: To obtain ferromagnetic powder with superior magnetic characteristics by applying heat reduction after sticking the surface of needle grains whose main component is iron oxyhydroxide or iron oxide with at least two components consisting of aluminum compounds and silicon compounds.
CONSTITUTION: Aluminum compounds such as aluminum hydroxide which is obtained by neutralizing aluminum sulfate are stuck on the surface of needle grains whose main component is iron oxyhydroxide such as α-FeOOH or iron oxide such as α-Fe2O3; after drying said grains, silicon compounds are stuck again on the surface of treated grains by immersing them into the solution containing silicon compounds such as silicone oil. Raw grains whose surface are stucked with aluminum compounds and silicon compounds are reduced while heating by the fixed procedure to obtain superior ferromagnetic powder consisting of sharp needle grains with high coercive force and even grain size whose main component is metallic iron.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10094279A JPS5625901A (en) | 1979-08-07 | 1979-08-07 | Ferromagnetic powder and its preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10094279A JPS5625901A (en) | 1979-08-07 | 1979-08-07 | Ferromagnetic powder and its preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5625901A true JPS5625901A (en) | 1981-03-12 |
Family
ID=14287398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10094279A Pending JPS5625901A (en) | 1979-08-07 | 1979-08-07 | Ferromagnetic powder and its preparation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5625901A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63302420A (en) * | 1987-01-16 | 1988-12-09 | Nissan Chem Ind Ltd | Production of magnetic iron powder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51106670A (en) * | 1975-03-17 | 1976-09-21 | Hitachi Ltd | |
| JPS52134858A (en) * | 1976-05-07 | 1977-11-11 | Kanto Denka Kogyo Kk | Method of making magnetic recording magnetic powder containing iron as main constituent |
-
1979
- 1979-08-07 JP JP10094279A patent/JPS5625901A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51106670A (en) * | 1975-03-17 | 1976-09-21 | Hitachi Ltd | |
| JPS52134858A (en) * | 1976-05-07 | 1977-11-11 | Kanto Denka Kogyo Kk | Method of making magnetic recording magnetic powder containing iron as main constituent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63302420A (en) * | 1987-01-16 | 1988-12-09 | Nissan Chem Ind Ltd | Production of magnetic iron powder |
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