JPS57116706A - Manufacture of metallic magnetic powder - Google Patents

Manufacture of metallic magnetic powder

Info

Publication number
JPS57116706A
JPS57116706A JP56002312A JP231281A JPS57116706A JP S57116706 A JPS57116706 A JP S57116706A JP 56002312 A JP56002312 A JP 56002312A JP 231281 A JP231281 A JP 231281A JP S57116706 A JPS57116706 A JP S57116706A
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
JP56002312A
Other languages
Japanese (ja)
Other versions
JPH0152441B2 (en
Inventor
Akinari Hayashi
Katsunori Tashimo
Shigeo Hirai
Toshinobu Sueyoshi
Mikio Kishimoto
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 JP56002312A priority Critical patent/JPS57116706A/en
Priority to US06/337,149 priority patent/US4400337A/en
Priority to EP82100091A priority patent/EP0056257B1/en
Priority to DE8282100091T priority patent/DE3261979D1/en
Publication of JPS57116706A publication Critical patent/JPS57116706A/en
Publication of JPH0152441B2 publication Critical patent/JPH0152441B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain metallic magnetic powder with superior magnetic characteristics by sticking an Si 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 Si compound is stuck to the particle surfaces os powder of a metallic compound consisting essentially of iron oxyhydroxide or iron oxide. The powder is heat treated at 200W1,000°C, granulated, and optionally heat treated at 200W1,000°C. Reduction under heating is then carried out at about 300W600°C in a reducting atmosphere of gaseous hydrogen or the like. By this method the reduction under heating can be caried out sufficiently and uniformly while effectively inhibiting sintering among the gruanules and the particles of the powder and the deformation of the particles. As a reusult, iron-base metallic magnetic powder with superior magnetic characteristics is obtd.
COPYRIGHT: (C)1982,JPO&Japio
JP56002312A 1981-01-10 1981-01-10 Manufacture of metallic magnetic powder Granted JPS57116706A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP56002312A JPS57116706A (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
EP82100091A EP0056257B1 (en) 1981-01-10 1982-01-08 Method for production of metal magnetic particles
DE8282100091T DE3261979D1 (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
JP56002312A JPS57116706A (en) 1981-01-10 1981-01-10 Manufacture of metallic magnetic powder

Publications (2)

Publication Number Publication Date
JPS57116706A true JPS57116706A (en) 1982-07-20
JPH0152441B2 JPH0152441B2 (en) 1989-11-08

Family

ID=11525824

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56002312A Granted JPS57116706A (en) 1981-01-10 1981-01-10 Manufacture of metallic magnetic powder

Country Status (1)

Country Link
JP (1) JPS57116706A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5531922A (en) * 1992-08-04 1996-07-02 Toda Kogyo Corporation Granulated particles for magnetic particles for magnetic recording, and process for producing the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52153198A (en) * 1976-06-14 1977-12-20 Toda Kogyo Corp Method of manufacturing needleetype crystall iron magneticcparticle powder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52153198A (en) * 1976-06-14 1977-12-20 Toda Kogyo Corp Method of manufacturing needleetype crystall iron magneticcparticle powder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5531922A (en) * 1992-08-04 1996-07-02 Toda Kogyo Corporation Granulated particles for magnetic particles for magnetic recording, and process for producing the same

Also Published As

Publication number Publication date
JPH0152441B2 (en) 1989-11-08

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