Magnetic recording medium

Abstract

Abstract PURPOSE:To obtain a magnetic recording medium having excellent wear resistance and corrosion resistance by coating the surface of the magnetic recording medium with a carbonaceous plasma polymer crosslinked with hydrogen of >=30:70 molar ratio of hydrogen to carbon and specifying the angle of contact with water to >=65 deg.. CONSTITUTION:A magnetic layer is formed by a sputtering method or plating method on the surface of a substrate or the hardened film on the substrate. The substrate 2 formed with the magnetic layer is fixed in a vacuum vessel 1 of a plasma polymn, device and a vacuum is maintained in the vessel by suction with a vacuum pump through a discharge port 3. Glow discharge is then executed to form the coating of the plasma polymer on the surface of the magnetic layer. At least one kind of gas among gaseous hydrocarbons such as CH4 and C2H6 are used for the reactive gas at the time of the plasma polymn. The carbonaceous plasma polymer to be formed is crosslinked with the hydrogen of >=30:70 molar ratio of hydrogen to carbon and is formed to have >=65 deg. angle of contact with water. The magnetic recording medium having the excellent wear resistance and corrosion resistance is thereby obtd.

Inventors

• 👤 Shuichi Hirai
• 👤 Akira Nitta

Bibliographic Details