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2015•Proceedings of JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment IIP/ISPS joint MIPEOpen access

WeA-4-2 Effects to head wear performance of lubricant coverage of hard disk inultra-thin lubricant

Ichiro Ota, Hiroyuki Tomita, Katsumi Murofushi

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Abstract

Magnetic head wear performance was studied usingvarious kinds of D-4OH lubricant thickness of hard disk(HD) media. Different characteristic behavior wasobserved in each lubricant thickness. The difference ofthe behavior was well related with media frictioncoefficiency. At the same time, surface free energychanged as well as it. According to lubricant coverageanalysis, it was found that the head wear behaviordepended on the lubricant coverage and head mediainteraction. Furthermore, molecular dynamics methodwas applied to observe lubricant molecular distributionand the coverage changed as a function of lubricantthickness.

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What this paper is about

Magnetic head wear performance was studied usingvarious kinds of D-4OH lubricant thickness of hard disk(HD) media. Different characteristic behavior wasobserved in each lubricant thickness. The difference ofthe behavior was well related with media frictioncoefficiency. At the same time, surface free energychanged as well as it. According to lubricant coverageanalysis, it was found that the head wear behaviordepended on the lubricant coverage and head mediainteraction. Furthermore, molecular dynamics methodwas applied to observe lubricant molecular distributionand the coverage changed as a function of lubricantthickness.

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Available abstract

Magnetic head wear performance was studied usingvarious kinds of D-4OH lubricant thickness of hard disk(HD) media. Different characteristic behavior wasobserved in each lubricant thickness. The difference ofthe behavior was well related with media frictioncoefficiency. At the same time, surface free energychanged as well as it. According to lubricant coverageanalysis, it was found that the head wear behaviordepended on the lubricant coverage and head mediainteraction. Furthermore, molecular dynamics methodwas applied to observe lubricant molecular distributionand the coverage changed as a function of lubricantthickness.

Key concepts: Lubricant, Head (geology), Materials science, Lubrication, Composite material, Geology, Geomorphology

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