JPS57116709A - Manufacture of metallic magnetic powder - Google Patents

Manufacture of metallic magnetic powder

Info

Publication number
JPS57116709A
JPS57116709A JP56002315A JP231581A JPS57116709A JP S57116709 A JPS57116709 A JP S57116709A JP 56002315 A JP56002315 A JP 56002315A JP 231581 A JP231581 A JP 231581A JP S57116709 A JPS57116709 A JP S57116709A
Authority
JP
Japan
Prior art keywords
powder
iron
under heating
metallic
reduction under
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.)
Granted
Application number
JP56002315A
Other languages
Japanese (ja)
Other versions
JPH0152443B2 (en
Inventor
Akinari Hayashi
Toshinobu Sueyoshi
Shigeo Hirai
Mikio Kishimoto
Katsunori Tashimo
Masahiro Amamiya
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell 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 Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP56002315A priority Critical patent/JPS57116709A/en
Priority to US06/337,149 priority patent/US4400337A/en
Priority to DE8282100091T priority patent/DE3261979D1/en
Priority to EP82100091A priority patent/EP0056257B1/en
Publication of JPS57116709A publication Critical patent/JPS57116709A/en
Publication of JPH0152443B2 publication Critical patent/JPH0152443B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain metallic magnetic powder with superior magnetic characteristics by sticking an Al compound to powder of a metallic compound consisting essentially of iron oxyhydroxide or iron oxide, granulating the powder, and carrying out reduction under heating.
CONSTITUTION: An Al compound is stuck to the particle surfaces of powder of a metallic compound consisting essentially of iron oxyhydroxide or iron oxide. The powder is heat treated at 200W600°C, granulated, and optionally heat treated at 200W600°C. Reduction under heating is then carried out at about 300W600°C in a reducing atmosphere of gaseous hydrogen or the like. By this method the reduction under heating can be carried out sufficiently and uniformly while effectively inhibiting sintering among the granules and the particles of the powder and the deformation of the particles. As a result, iron-base metallic magnetic powder with superior magnetic characteristics is obtd.
COPYRIGHT: (C)1982,JPO&Japio
JP56002315A 1981-01-10 1981-01-10 Manufacture of metallic magnetic powder Granted JPS57116709A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP56002315A JPS57116709A (en) 1981-01-10 1981-01-10 Manufacture of metallic magnetic powder
US06/337,149 US4400337A (en) 1981-01-10 1982-01-05 Method for production of metal magnetic particles
DE8282100091T DE3261979D1 (en) 1981-01-10 1982-01-08 Method for production of metal magnetic particles
EP82100091A EP0056257B1 (en) 1981-01-10 1982-01-08 Method for production of metal magnetic particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56002315A JPS57116709A (en) 1981-01-10 1981-01-10 Manufacture of metallic magnetic powder

Publications (2)

Publication Number Publication Date
JPS57116709A true JPS57116709A (en) 1982-07-20
JPH0152443B2 JPH0152443B2 (en) 1989-11-08

Family

ID=11525896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56002315A Granted JPS57116709A (en) 1981-01-10 1981-01-10 Manufacture of metallic magnetic powder

Country Status (1)

Country Link
JP (1) JPS57116709A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59207024A (en) * 1983-05-10 1984-11-24 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPS6362803A (en) * 1986-09-02 1988-03-19 Mitsui Toatsu Chem Inc Production of ferromagnetic metallic power
JPS63103423A (en) * 1986-10-20 1988-05-09 Fuji Photo Film Co Ltd Magnetic recording medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52122213A (en) * 1976-04-05 1977-10-14 Hitachi Ltd Production of ferromagnetic metal powder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52122213A (en) * 1976-04-05 1977-10-14 Hitachi Ltd Production of ferromagnetic metal powder

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59207024A (en) * 1983-05-10 1984-11-24 Konishiroku Photo Ind Co Ltd Magnetic recording medium
JPS6322366B2 (en) * 1983-05-10 1988-05-11 Konika Kk
JPS6362803A (en) * 1986-09-02 1988-03-19 Mitsui Toatsu Chem Inc Production of ferromagnetic metallic power
JPH0676607B2 (en) * 1986-09-02 1994-09-28 三井東圧化学株式会社 Method for producing ferromagnetic metal powder
JPS63103423A (en) * 1986-10-20 1988-05-09 Fuji Photo Film Co Ltd Magnetic recording medium
JPH0610860B2 (en) * 1986-10-20 1994-02-09 富士写真フイルム株式会社 Magnetic recording medium

Also Published As

Publication number Publication date
JPH0152443B2 (en) 1989-11-08

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