| 摘要 |
PURPOSE:To obtain a magnetic recording medium having slipperiness, wear resistance and running stability by forming a mixed slippery layer of a fatty acid amide and a phosphorus compd. on the surface of a thin ferromagnetic metallic film formed on a nonmagnetic substrate. CONSTITUTION:A mixed slippery layer of a fatty acid amide and a phosphorus compd. is formed on the surface of a thin ferromagnetic film. The amide of a fatty acid having 12C, more particularly 22C is preferable for the fatty acid amide. Said amide is enumerated by, for example, a behenic amide, lignoceric amide, and cerotic amide. The phosphorus compd. to be used is octyl phosphate, dioctyl phosphate, decyl phosphate, didecyl phosphate and dodecyl phosphate in phosphate. The slippery layer is formed on the surface of the thin ferromagnetic film by a wet process and a dry process. The solvent used for the coating liquid is benzene, toluene, etc. and any solvent which dissolves both of the fatty acid amide and the phosphorus compd. is usable. |
