| 摘要 |
PURPOSE:To achieve improved running stability and wear resistance property by forming a ferromagnetic metal film on a non-magnetic support and then covering it by attaching a lubricant layer containing a specific composition on it. CONSTITUTION:A metal magnetic thin film 2 is formed on a non-magnetic support 1 through a ground layer when needed and further a lubricant layer 3 is applied on it. The lubricant layer 3 contains perfluoroalkylcarboxylic ester and arsenic compound. By combining these two contained constituents, a usage temperature range can be expanded and an improved lubrication operation can be achieved so that durability can be improved. Also, since perfluoroalkylcarboxylic ester has a low freezing point, an improved lubrication effect can be obtained even in the case of used at a low temperature. |
