JPS5626727A - Manufacture of ferrite powder - Google Patents

Manufacture of ferrite powder

Info

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
Application number
JP10174979A
Other languages
Japanese (ja)
Inventor
Tsutomu Iimura
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 JP10174979A priority Critical patent/JPS5626727A/en
Publication of JPS5626727A publication Critical patent/JPS5626727A/en
Pending legal-status Critical Current

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  • 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
JP10174979A 1979-08-09 1979-08-09 Manufacture of ferrite powder Pending JPS5626727A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486401A (en) * 1983-03-14 1984-12-04 Celanese Corporation Production of fine ferrimagnetic spinels

Cited By (1)

* Cited by examiner, † Cited by third party
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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