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JPS5573803A - Production of magnetic alloy powder - Google Patents

Production of magnetic alloy powder

Info

Publication number
JPS5573803A
JPS5573803A JP14588078A JP14588078A JPS5573803A JP S5573803 A JPS5573803 A JP S5573803A JP 14588078 A JP14588078 A JP 14588078A JP 14588078 A JP14588078 A JP 14588078A JP S5573803 A JPS5573803 A JP S5573803A
Authority
JP
Japan
Prior art keywords
powder
metals
iron
superior
alloy 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.)
Granted
Application number
JP14588078A
Other languages
Japanese (ja)
Other versions
JPS622002B2 (en
Inventor
Toshinobu Sueyoshi
Akinari Hayashi
Shigeo Hirai
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 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 JP14588078A priority Critical patent/JPS5573803A/en
Publication of JPS5573803A publication Critical patent/JPS5573803A/en
Publication of JPS622002B2 publication Critical patent/JPS622002B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Paints Or Removers (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE: To obtain the alloy powder of superior acicular characteristic and uniform composition for high density magnetic recording media by heat reducing the modified iron oxide film comprising solid solutionizing metals other than iron into powder of α-FeOOH or α-Fe2O3 by the specific means.
CONSTITUTION: Powder of α-FeOOH or α-Fe2O3 is evenly dispersed in the water or organic solvent dissolved with inorganic or organic acid salts of metals such as Co, Ni, Mn other than iron and the mixture is heated. The modified iron oxide powder obtained through this treatment consists of the particles of superior acicular characteristic in which the metals other than iron are evenly solutionized. Hence, when this is heat reduced by an ordinary method, the magnetic alloy powder of uniform alloy composition and superior magnetic characteristics is formed.
COPYRIGHT: (C)1980,JPO&Japio
JP14588078A 1978-11-25 1978-11-25 Production of magnetic alloy powder Granted JPS5573803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14588078A JPS5573803A (en) 1978-11-25 1978-11-25 Production of magnetic alloy powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14588078A JPS5573803A (en) 1978-11-25 1978-11-25 Production of magnetic alloy powder

Publications (2)

Publication Number Publication Date
JPS5573803A true JPS5573803A (en) 1980-06-03
JPS622002B2 JPS622002B2 (en) 1987-01-17

Family

ID=15395175

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14588078A Granted JPS5573803A (en) 1978-11-25 1978-11-25 Production of magnetic alloy powder

Country Status (1)

Country Link
JP (1) JPS5573803A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56109827A (en) * 1980-02-05 1981-08-31 Mitsui Toatsu Chem Inc Manufacture of iron compound particle for magnetic recording medium
JPS5848612A (en) * 1981-09-18 1983-03-22 Mitsui Toatsu Chem Inc Production of ferromagnetic iron powder
JPS5944809A (en) * 1982-07-31 1984-03-13 バスフ　アクチエンゲゼルシヤフト Method of producing substantially acicular ferromagnetic metal particles

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4882395A (en) * 1972-02-04 1973-11-02
JPS4911760A (en) * 1972-03-17 1974-02-01
JPS4922630A (en) * 1972-06-24 1974-02-28
JPS5297357A (en) * 1976-02-13 1977-08-16 Sony Corp Method of making magnetic alloy powder containing iron and copper as main constituents
JPS52121799A (en) * 1976-04-05 1977-10-13 Toda Kogyo Corp Method of manufacturing needleetype crystallalloy magneticcparticle powder
JPS52122213A (en) * 1976-04-05 1977-10-14 Hitachi Ltd Production of ferromagnetic metal powder
JPS52134858A (en) * 1976-05-07 1977-11-11 Kanto Denka Kogyo Kk Method of making magnetic recording magnetic powder containing iron as main constituent
JPS5562105A (en) * 1978-10-30 1980-05-10 Hitachi Maxell Ltd Production of magnetic alloy powder

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4882395A (en) * 1972-02-04 1973-11-02
JPS4911760A (en) * 1972-03-17 1974-02-01
JPS4922630A (en) * 1972-06-24 1974-02-28
JPS5297357A (en) * 1976-02-13 1977-08-16 Sony Corp Method of making magnetic alloy powder containing iron and copper as main constituents
JPS52121799A (en) * 1976-04-05 1977-10-13 Toda Kogyo Corp Method of manufacturing needleetype crystallalloy magneticcparticle powder
JPS52122213A (en) * 1976-04-05 1977-10-14 Hitachi Ltd Production of ferromagnetic metal powder
JPS52134858A (en) * 1976-05-07 1977-11-11 Kanto Denka Kogyo Kk Method of making magnetic recording magnetic powder containing iron as main constituent
JPS5562105A (en) * 1978-10-30 1980-05-10 Hitachi Maxell Ltd Production of magnetic alloy powder

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56109827A (en) * 1980-02-05 1981-08-31 Mitsui Toatsu Chem Inc Manufacture of iron compound particle for magnetic recording medium
JPH0122204B2 (en) * 1980-02-05 1989-04-25 Mitsui Toatsu Chemicals
JPS5848612A (en) * 1981-09-18 1983-03-22 Mitsui Toatsu Chem Inc Production of ferromagnetic iron powder
JPH0232324B2 (en) * 1981-09-18 1990-07-19 Mitsui Toatsu Chemicals
JPS5944809A (en) * 1982-07-31 1984-03-13 バスフ　アクチエンゲゼルシヤフト Method of producing substantially acicular ferromagnetic metal particles
JPH0475641B2 (en) * 1982-07-31 1992-12-01 Basf Ag

Also Published As

Publication number Publication date
JPS622002B2 (en) 1987-01-17

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