JPS641116A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS641116A
JPS641116A JP15534687A JP15534687A JPS641116A JP S641116 A JPS641116 A JP S641116A JP 15534687 A JP15534687 A JP 15534687A JP 15534687 A JP15534687 A JP 15534687A JP S641116 A JPS641116 A JP S641116A
Authority
JP
Japan
Prior art keywords
film
corrosion
resistance
cobalt
wear
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
JP15534687A
Other languages
Japanese (ja)
Other versions
JPH011116A (en
Inventor
Hideaki Niimi
Noboru Isoe
Tetsuo Mizumura
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 JP15534687A priority Critical patent/JPS641116A/en
Priority to EP88300103A priority patent/EP0274437B1/en
Priority to DE3888984T priority patent/DE3888984T2/en
Publication of JPH011116A publication Critical patent/JPH011116A/en
Publication of JPS641116A publication Critical patent/JPS641116A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To improve resistance to erosion, corrosion and wear by providing a film for suppressing deposition of cobalt on the surface of a magnetic film and providing a protective film on the surface of this film.
CONSTITUTION: A vapor deposited CoNi film is formed on one face of a base film 10. The film 12 for suppressing the deposition of Co is then formed on this film 11. A passivated film is also usable as the film 12. The passivated film includes the layers contg. tervalent or higher valency oxides or hydrous oxides of cobalt; for example, Co3O4, Co2O3, Co3O4.nH2O or Co2O3.nH2O. The protective film 13 essentially consisting of Ni is further formed on the surface of such film 11. Since the Ni is superior in corrosion resistance to the Co, the protective film effective to corrosive gases is obtd. The resistance to corrosion and wear is thus improved.
COPYRIGHT: (C)1989,JPO&Japio
JP15534687A 1987-01-07 1987-06-24 Magnetic recording medium Pending JPS641116A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP15534687A JPS641116A (en) 1987-06-24 1987-06-24 Magnetic recording medium
EP88300103A EP0274437B1 (en) 1987-01-07 1988-01-07 Magnetic recording medium
DE3888984T DE3888984T2 (en) 1987-01-07 1988-01-07 Magnetic record carrier.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15534687A JPS641116A (en) 1987-06-24 1987-06-24 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPH011116A JPH011116A (en) 1989-01-05
JPS641116A true JPS641116A (en) 1989-01-05

Family

ID=15603881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15534687A Pending JPS641116A (en) 1987-01-07 1987-06-24 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS641116A (en)

Similar Documents

Publication Publication Date Title
JPS52105804A (en) Magnetic disc substrate
JPS5718025A (en) Magnetic recording medium
JPS641116A (en) Magnetic recording medium
JPS57176537A (en) Magnetic recording medium
JPS563117A (en) Coated miniature drill made of hard alloy metal
JPS5573931A (en) High-recording-density magnetic disk
JPS5480728A (en) Floating head slider
JPS5771518A (en) Magnetic recording medium
JPS5340505A (en) Magnetic recordinf medium
JPS54141107A (en) Magnetic recording medium
JPS54140505A (en) Production of magnetic recording medium
JPS5389706A (en) Magnetic recording medium and its manufacture
JPS5570926A (en) Magnetic head of wear proof
JPS54162508A (en) Magnetic memory medium
JPS5687229A (en) Magnetic recording medium
JPS5651024A (en) Magnetic recording body
JPS54143114A (en) Magnetic recording medium
JPS537527A (en) Corrosion-resisting magnetic material
JPS6476518A (en) Magnetic recording medium
JPS5644122A (en) Magnetic recording medium
JPS57201004A (en) Magnetic recording medium
JPS6476517A (en) Magnetic recording medium
JPS6460838A (en) Magneto-optical recording element and production thereof
JPS57147130A (en) Magnetic recording medium
JPS6476519A (en) Magnetic recording medium