JPS6437713A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS6437713A
JPS6437713A JP19350687A JP19350687A JPS6437713A JP S6437713 A JPS6437713 A JP S6437713A JP 19350687 A JP19350687 A JP 19350687A JP 19350687 A JP19350687 A JP 19350687A JP S6437713 A JPS6437713 A JP S6437713A
Authority
JP
Japan
Prior art keywords
tungsten
recording medium
protective film
magnetic recording
film
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
JP19350687A
Other languages
Japanese (ja)
Other versions
JPH0727632B2 (en
Inventor
Seiichi Kikuchi
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.)
Hoya Corp
Original Assignee
Hoya 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 Hoya Corp filed Critical Hoya Corp
Priority to JP19350687A priority Critical patent/JPH0727632B2/en
Publication of JPS6437713A publication Critical patent/JPS6437713A/en
Publication of JPH0727632B2 publication Critical patent/JPH0727632B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To obtain good durability even to a magnetic head having 1,900 Vickers hardness by forming a protective film of carbon and tungsten and specifying the content of the tungsten. CONSTITUTION:An underlying layer 2 is formed on one main surface of a disk- shaped nonmagnetic substrate 1 and a thin magnetic film 3 is formed on the underlying layer 2. The protective film 4 consisting of tungsten carbide is formed on this thin magnetic film 3 by a sputtering method using a target consisting of the tungsten carbide, by which a magnetic recording medium 5 is produced. The content of the tungsten in this protective film 4 is specified to 5-20atom.%. The good durability to the magnetic head consisting of a material having 1,900 Vickers hardness is thereby obtd.
JP19350687A 1987-07-31 1987-07-31 Magnetic recording medium Expired - Fee Related JPH0727632B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19350687A JPH0727632B2 (en) 1987-07-31 1987-07-31 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19350687A JPH0727632B2 (en) 1987-07-31 1987-07-31 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS6437713A true JPS6437713A (en) 1989-02-08
JPH0727632B2 JPH0727632B2 (en) 1995-03-29

Family

ID=16309185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19350687A Expired - Fee Related JPH0727632B2 (en) 1987-07-31 1987-07-31 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPH0727632B2 (en)

Also Published As

Publication number Publication date
JPH0727632B2 (en) 1995-03-29

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees