JPS6476519A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS6476519A
JPS6476519A JP23262487A JP23262487A JPS6476519A JP S6476519 A JPS6476519 A JP S6476519A JP 23262487 A JP23262487 A JP 23262487A JP 23262487 A JP23262487 A JP 23262487A JP S6476519 A JPS6476519 A JP S6476519A
Authority
JP
Japan
Prior art keywords
protective
boron
film layer
film
magnetic recording
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
JP23262487A
Other languages
Japanese (ja)
Inventor
Minoru Ichijo
Hideaki Niimi
Noboru Isoe
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 JP23262487A priority Critical patent/JPS6476519A/en
Publication of JPS6476519A publication Critical patent/JPS6476519A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To decrease diffusion of Co and to provide the excellent corrosion resistance to substantially inhibit corrosion even in corrosive gaseous environment to the titled medium by providing a protective boron film layer on a magnetic recording layer and forming a protective inorg. film layer thereon. CONSTITUTION:The magnetic recording layer 22 consisting of a thin ferromagnetic metallic film is formed on a nonmagnetic substrate 21 and further, the protective boron film 23 and the protective Ni film 24 are successively formed thereon. The magnetic recording layer is densely coated by the protective film layer 23 consisting of boron or essentially consisting of the boron. Furthermore, the protective inorg. film layer 24 formed on the protective boron film layer 23 prohibits the intrusion of the corrosive gases. The thicknesses of the protective film layer 23 consisting the of boron or essentially consisting of the boron and the protective inorg. film layer 24 are preferably about 20-1000Angstrom of the former and about 40-2000Angstrom of the latter in order to obtain the effect of suppressing the diffusion of the Co and the effect of prohibiting the intrusion of the corrosive gases. The recording medium having the excellent corrosion resistance and wear resistance in combination is thereby obtd.
JP23262487A 1987-09-18 1987-09-18 Magnetic recording medium Pending JPS6476519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23262487A JPS6476519A (en) 1987-09-18 1987-09-18 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23262487A JPS6476519A (en) 1987-09-18 1987-09-18 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS6476519A true JPS6476519A (en) 1989-03-22

Family

ID=16942242

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23262487A Pending JPS6476519A (en) 1987-09-18 1987-09-18 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS6476519A (en)

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