Magnetic recording medium provided with protective layer having carbon-containing composition

Abstract

Abstract PURPOSE:To obtain a medium having excellent wear resistance by providing a protective layer made of a compsn. consisting of one kind from respective elements such as titanium, vanadium and boron and carbon on a magnetic layer. CONSTITUTION:At least one layer of the protective layer made of the compsn. consisting of one kind selected from the respective elements; titanium, vanadium, chromium, zirconium, niobium, molybdenum, hafnium, tantalum, tungsten, silicon, and boron, and the carbon is provided on the magnetic layer. The compsn. of the protective layer is preferably the solid soln. of the carbide of at least one kind among the respective elements or carbon. The carbide is preferably silicon carbide SiC and boron carbide B4C which are hard and extremely chemically stable covalent type carbides, and further interstitial carbides MC and M'C2 (where M is Ti, Zr, Hf, V, Nb, Ta, Mo, W and M' is V, Ta, Mo, W) which have a high m. p. and are hard and chemically stable. The chromium carbide is preferably Cr3C2. The carbon-contg. solid soln. may be either of a substitutional solid soln. or interstitial solid soln.

Inventors

• 👤 Kazuyuki Miyamoto
• 👤 和幸 宮本
• 👤 Shozo Ishibashi
• 👤 正三 石橋

Bibliographic Details