JPS5254998A - Oxidation treatment process of metallic magnetic powder for magnetic r ecording medium - Google Patents

Oxidation treatment process of metallic magnetic powder for magnetic r ecording medium

Info

Publication number
JPS5254998A
JPS5254998A JP50131198A JP13119875A JPS5254998A JP S5254998 A JPS5254998 A JP S5254998A JP 50131198 A JP50131198 A JP 50131198A JP 13119875 A JP13119875 A JP 13119875A JP S5254998 A JPS5254998 A JP S5254998A
Authority
JP
Japan
Prior art keywords
magnetic
treatment process
oxidation treatment
metallic
metallic magnetic
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
JP50131198A
Other languages
Japanese (ja)
Other versions
JPS608605B2 (en
Inventor
Akio Kawasaki
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP50131198A priority Critical patent/JPS608605B2/en
Publication of JPS5254998A publication Critical patent/JPS5254998A/en
Publication of JPS608605B2 publication Critical patent/JPS608605B2/en
Expired legal-status Critical Current

Links

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  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE: Oxidation treatment process of metallic magnetic grit for magnetic recording medium bettered the granular dispersibility and improved the noise characteristic by forming chemically stable oxide film as a protective film on the surface of metallic magnetic grit.
COPYRIGHT: (C)1977,JPO&Japio
JP50131198A 1975-10-31 1975-10-31 Oxidation treatment method for metal magnetic powder for magnetic recording media Expired JPS608605B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50131198A JPS608605B2 (en) 1975-10-31 1975-10-31 Oxidation treatment method for metal magnetic powder for magnetic recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50131198A JPS608605B2 (en) 1975-10-31 1975-10-31 Oxidation treatment method for metal magnetic powder for magnetic recording media

Publications (2)

Publication Number Publication Date
JPS5254998A true JPS5254998A (en) 1977-05-04
JPS608605B2 JPS608605B2 (en) 1985-03-04

Family

ID=15052314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50131198A Expired JPS608605B2 (en) 1975-10-31 1975-10-31 Oxidation treatment method for metal magnetic powder for magnetic recording media

Country Status (1)

Country Link
JP (1) JPS608605B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59170201A (en) * 1983-03-15 1984-09-26 Kanto Denka Kogyo Kk Stabilizing method of magnetic metallic powder
US4608093A (en) * 1982-10-25 1986-08-26 Fuji Photo Film Co., Ltd. Ferromagnetic particles with stable magnetic characteristics and method of preparing same
JPS63199803A (en) * 1987-02-14 1988-08-18 Chisso Corp Production of ferromagnetic metal powder having oxide film
JPS6423415A (en) * 1987-07-20 1989-01-26 Fuji Photo Film Co Ltd Magnetic recording medium
US5735969A (en) * 1996-03-07 1998-04-07 Imation Corp. Method of producing acicular magnetic alloy particles
WO2007119393A1 (en) 2006-03-16 2007-10-25 Matsushita Electric Industrial Co., Ltd. Radial anisotropic magnet manufacturing method, permanent magnet motor using radial anisotropic magnet, iron core-equipped permanent magnet motor
EP2226814A1 (en) 2009-02-27 2010-09-08 MINEBEA Co., Ltd. Rare-earth iron -based magnet with self-recoverability
DE102010037838A1 (en) 2009-09-29 2011-03-31 Minebea Co., Ltd. Anisotropic resin bonded magnet based on rare earth iron

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01117206U (en) * 1988-02-02 1989-08-08
JPH01141610U (en) * 1988-03-17 1989-09-28

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825662A (en) * 1971-08-06 1973-04-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825662A (en) * 1971-08-06 1973-04-03

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608093A (en) * 1982-10-25 1986-08-26 Fuji Photo Film Co., Ltd. Ferromagnetic particles with stable magnetic characteristics and method of preparing same
JPS59170201A (en) * 1983-03-15 1984-09-26 Kanto Denka Kogyo Kk Stabilizing method of magnetic metallic powder
JPS63199803A (en) * 1987-02-14 1988-08-18 Chisso Corp Production of ferromagnetic metal powder having oxide film
JPS6423415A (en) * 1987-07-20 1989-01-26 Fuji Photo Film Co Ltd Magnetic recording medium
JPH0668829B2 (en) * 1987-07-20 1994-08-31 富士写真フイルム株式会社 Magnetic recording medium
US5735969A (en) * 1996-03-07 1998-04-07 Imation Corp. Method of producing acicular magnetic alloy particles
WO2007119393A1 (en) 2006-03-16 2007-10-25 Matsushita Electric Industrial Co., Ltd. Radial anisotropic magnet manufacturing method, permanent magnet motor using radial anisotropic magnet, iron core-equipped permanent magnet motor
US8072109B2 (en) 2006-03-16 2011-12-06 Panasonic Corporation Radial anisotropic magnet manufacturing method, permanent magnet motor using radial anisotropic magnet, and iron core-equipped permanent magnet motor
US8183732B2 (en) 2006-03-16 2012-05-22 Panasonic Corporation Radial anisotropic magnet manufacturing method, permanent magnet motor using radial anisotropic magnet, and iron core-equipped permanent magnet motor
EP2226814A1 (en) 2009-02-27 2010-09-08 MINEBEA Co., Ltd. Rare-earth iron -based magnet with self-recoverability
DE102010037838A1 (en) 2009-09-29 2011-03-31 Minebea Co., Ltd. Anisotropic resin bonded magnet based on rare earth iron
US8329056B2 (en) 2009-09-29 2012-12-11 Minebea Co., Ltd. Anisotropic rare earth-iron based resin bonded magnet

Also Published As

Publication number Publication date
JPS608605B2 (en) 1985-03-04

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