JPS5626727A - Manufacture of ferrite powder - Google Patents
Manufacture of ferrite powderInfo
- Publication number
- JPS5626727A JPS5626727A JP10174979A JP10174979A JPS5626727A JP S5626727 A JPS5626727 A JP S5626727A JP 10174979 A JP10174979 A JP 10174979A JP 10174979 A JP10174979 A JP 10174979A JP S5626727 A JPS5626727 A JP S5626727A
- Authority
- JP
- Japan
- Prior art keywords
- particles
- metal
- hydrothermal synthesis
- ferrite
- ferrite powder
- 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
Landscapes
- Compounds Of Iron (AREA)
- Soft Magnetic Materials (AREA)
Abstract
PURPOSE: To manufacture ferrite powder having high activity and superior sinterability by hydrolyzing a mixture of metal alkoxide and metal acetyl acetonate and subjecting the resulting ferrite powder to hydrothermal synthesis while heating under pressure.
CONSTITUTION: Metal alkoxide represented by formula M(OR) (where M is a mono- to pentavalent metal and R is alkyl) and metal acetyl acetonate represented by formula C5H7O2 are mixed and hycrolyzed to form ferrite particles of ≤0.1μm particle size. The particles are then subjected to hydrothermal synthesis at 300W 1,000°C under ≤1,000 atm. Thus, uniform ferrite particles of ≤5μ particle size are obtd. In order to especially obtain fine particle powder of ≤0.1μ, the hydrothermal synthesis is carried out at 400°C under about 500 atm for 3hr. When the heating temp. exceeds 1,000°C, particles are grown remarkably and the desired fine particles are not obtd.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10174979A JPS5626727A (en) | 1979-08-09 | 1979-08-09 | Manufacture of ferrite powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10174979A JPS5626727A (en) | 1979-08-09 | 1979-08-09 | Manufacture of ferrite powder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5626727A true JPS5626727A (en) | 1981-03-14 |
Family
ID=14308881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10174979A Pending JPS5626727A (en) | 1979-08-09 | 1979-08-09 | Manufacture of ferrite powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5626727A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4486401A (en) * | 1983-03-14 | 1984-12-04 | Celanese Corporation | Production of fine ferrimagnetic spinels |
-
1979
- 1979-08-09 JP JP10174979A patent/JPS5626727A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4486401A (en) * | 1983-03-14 | 1984-12-04 | Celanese Corporation | Production of fine ferrimagnetic spinels |
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