金属薄膜媒体における表面保護膜の摩擦特性

概要

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Durability of CoCr thin film media on head running condition is important in practical application. During head running, some phenomena such as scratch, crack and removal of the CoCr thin film from PET are locally on the surface of the media. One of the methods of obstructing these phenomena is to form a protective layer on the CoCr thin film. In this report, fluoride oil, fluoride resin and CoCrOx thin film are studied by the observation of a scratch and the measurement of friction coefficient. The scratch is made by a diamond or steel needle with 50μm or 500μm radius under contact loads from 1 grf to 80 grf. It is shown that CoCrOx thin film is not as easily scratched as other organic films; its friction coefficient is small on media with small surface roughness and shows a constant value which does not depend on load applied to the needle.
社団法人日本磁気学会の論文