JPS5626726A - Manufacture of ferrite powder - Google Patents
Manufacture of ferrite powderInfo
- Publication number
- JPS5626726A JPS5626726A JP10174879A JP10174879A JPS5626726A JP S5626726 A JPS5626726 A JP S5626726A JP 10174879 A JP10174879 A JP 10174879A JP 10174879 A JP10174879 A JP 10174879A JP S5626726 A JPS5626726 A JP S5626726A
- Authority
- JP
- Japan
- Prior art keywords
- particles
- ferrite
- ferrite powder
- powder
- obtd
- 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
Abstract
PURPOSE: To obtain ferrite powder having high activity and superior sinterability by hydrolyzing a mixture of two or more kinds of metal alkoxides and subjecting the resulting ferrite powder to hydrothermal synthesis while heating under pressure.
CONSTITUTION: Two or more kinds of metal alkoxides represented by formula M(OR)n (where M is a mono- to pentavalent metal and R is alkyl) are mixed and hydrolyzed to form ferrite particles of ≤0.1μm particle size. The particles are then subjected by hyrothermal synthesis at 300W1,000°C under ≤1,000 atm. Thus, uniform ferrite particles of ≤5μ particle size are obtd. In order to especially obtain fine particle powder of ≤0.1μm, 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 |
---|---|---|---|
JP10174879A JPS5626726A (en) | 1979-08-09 | 1979-08-09 | Manufacture of ferrite powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10174879A JPS5626726A (en) | 1979-08-09 | 1979-08-09 | Manufacture of ferrite powder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5626726A true JPS5626726A (en) | 1981-03-14 |
Family
ID=14308855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10174879A Pending JPS5626726A (en) | 1979-08-09 | 1979-08-09 | Manufacture of ferrite powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5626726A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58199724A (en) * | 1982-05-17 | 1983-11-21 | Sentan Kako Kikai Gijutsu Shinko Kyokai | Manufacture of ferrite |
US4486401A (en) * | 1983-03-14 | 1984-12-04 | Celanese Corporation | Production of fine ferrimagnetic spinels |
US4853199A (en) * | 1987-01-08 | 1989-08-01 | Matsushita Electric Industrial Co., Ltd. | Method for producing crystalline complex perovskite compounds |
-
1979
- 1979-08-09 JP JP10174879A patent/JPS5626726A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58199724A (en) * | 1982-05-17 | 1983-11-21 | Sentan Kako Kikai Gijutsu Shinko Kyokai | Manufacture of ferrite |
JPH059375B2 (en) * | 1982-05-17 | 1993-02-04 | Sentan Kako Kikai Gijutsu Shinko Kyokai | |
US4486401A (en) * | 1983-03-14 | 1984-12-04 | Celanese Corporation | Production of fine ferrimagnetic spinels |
US4853199A (en) * | 1987-01-08 | 1989-08-01 | Matsushita Electric Industrial Co., Ltd. | Method for producing crystalline complex perovskite compounds |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3210987C2 (en) | ||
DE69915509T2 (en) | PREPARATION OF A FLOWABLE URANDIOXIDE BY ATOMIZATION DRYING AND BY DRY IMPLEMENTATION OF UF6 | |
JPS5626726A (en) | Manufacture of ferrite powder | |
JPS5626727A (en) | Manufacture of ferrite powder | |
JPS6439374A (en) | Production of silicide target | |
FR2611694B1 (en) | PROCESS FOR THE PREPARATION OF SILICON CARBIDE TRICHITES | |
JPS55140722A (en) | Manufacture of ferrite fine grain powder | |
JPS57108094A (en) | Preparation of alkoxysilane | |
JPS57179023A (en) | Compound having hexagonal system laminar structure represented by ybalmno4 and its manufacture | |
JPS55140721A (en) | Manufacture of ferrite fine grain powder | |
JPS55140710A (en) | Manufacture of silicon carbide fine powder | |
JPS56140015A (en) | Synthesizing method for cubic system boron nitride | |
JPS56129614A (en) | Manufacture of fine chromium oxide | |
JPS56109826A (en) | Manufacture of iron yellow pigment powder | |
JPS56140013A (en) | Synthesizing method for cubic system boron nitride | |
JPS57209811A (en) | Preparation of alpha-si3n4 impalpable powder | |
JPS5650990A (en) | Production of reformed coal | |
JPS649876A (en) | Production of ceramics formed body | |
JPS52142389A (en) | Cubic crystalline boron nitride grinding member and process for preparing the same | |
JPS5717499A (en) | Manufacture of silicon nitride whisker | |
JPS6456363A (en) | Diamond-silicon carbide complex sintered body and its production | |
JPS57179040A (en) | Monoclinic system compound represented by 4nio-6fe2o3-9geo2-(ni4fe12ge9o40) and its manufacture | |
JPS54148199A (en) | Production of cubic boron nitride fine powder | |
JPS54161512A (en) | Lumped ore for iron making raw material | |
JPS643074A (en) | Production of high-density sintered boron nitride |