JPS5626726A - Manufacture of ferrite powder - Google Patents

Manufacture of ferrite powder

Info

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
Application number
JP10174879A
Other languages
Japanese (ja)
Inventor
Tsutomu Iimura
Hajime Shinohara
Shigeharu Naka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP10174879A priority Critical patent/JPS5626726A/en
Publication of JPS5626726A publication Critical patent/JPS5626726A/en
Pending legal-status Critical Current

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
JP10174879A 1979-08-09 1979-08-09 Manufacture of ferrite powder Pending JPS5626726A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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

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