JPS56145121A - Magnetic powder of metal-containing iron oxide and its preparation - Google Patents

Magnetic powder of metal-containing iron oxide and its preparation

Info

Publication number
JPS56145121A
JPS56145121A JP3518180A JP3518180A JPS56145121A JP S56145121 A JPS56145121 A JP S56145121A JP 3518180 A JP3518180 A JP 3518180A JP 3518180 A JP3518180 A JP 3518180A JP S56145121 A JPS56145121 A JP S56145121A
Authority
JP
Japan
Prior art keywords
iron oxide
powder
magnetic
metal
magnetic 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
JP3518180A
Other languages
Japanese (ja)
Inventor
Toshinobu Sueyoshi
Kunio Wakai
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 JP3518180A priority Critical patent/JPS56145121A/en
Publication of JPS56145121A publication Critical patent/JPS56145121A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prepare magnetic powder of metal-containing iron oxide having improved properties, e.g., coercive force, saturation magnetization, etc., by dispersing magnetic powder of iron oxide into a solution consisting of a specific metal compound dissolved in an organic solvent, followed by heat-treatmenting the dispersion.
CONSTITUTION: An inorganic salt, e.g., halogenide, hydroxide, carbonate, sulfate, etc., organic meal salt, complex, etc. of Co, Ni, Mn, Cr, etc. is dissolved in one, two, or more organic solvents selected from the group consisting of fatty acid, oxycarboxylic acid, fatty acid ester and semidrying oil. Powder of iron oxide, e.g., γ-Fe2O3, Fe3O4, etc. is dispersed in the solution, the dispersion is heated to 150W 300°C and filtered. The prepared powder is washed with ethanol, etc. and dried so that the monomolecular layer of the above-mentioned metal salt is formed on the surface of the particles of iron oxide. Iron oxide as a magnetic recording medium, having improved magnetic properties and a magnetic layer with improved lubricating properties, can be prepared.
COPYRIGHT: (C)1981,JPO&Japio
JP3518180A 1980-03-20 1980-03-20 Magnetic powder of metal-containing iron oxide and its preparation Pending JPS56145121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3518180A JPS56145121A (en) 1980-03-20 1980-03-20 Magnetic powder of metal-containing iron oxide and its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3518180A JPS56145121A (en) 1980-03-20 1980-03-20 Magnetic powder of metal-containing iron oxide and its preparation

Publications (1)

Publication Number Publication Date
JPS56145121A true JPS56145121A (en) 1981-11-11

Family

ID=12434673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3518180A Pending JPS56145121A (en) 1980-03-20 1980-03-20 Magnetic powder of metal-containing iron oxide and its preparation

Country Status (1)

Country Link
JP (1) JPS56145121A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60141611A (en) * 1983-12-28 1985-07-26 Daikin Ind Ltd Acicular particle of iron carbide and its preparation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS538352A (en) * 1976-07-12 1978-01-25 Hitachi Maxell Magnetic powder manufacturing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS538352A (en) * 1976-07-12 1978-01-25 Hitachi Maxell Magnetic powder manufacturing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60141611A (en) * 1983-12-28 1985-07-26 Daikin Ind Ltd Acicular particle of iron carbide and its preparation
JPH0121089B2 (en) * 1983-12-28 1989-04-19 Daikin Kogyo Co Ltd

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