Hard disk double lubrication layer
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United States of America Patent
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Mar 28, 2017
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app pub date -
Mar 4, 2014
filing date -
Jul 30, 2013
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Abstract
Systems and methods are illustrated for manufacturing hard disks with double lubrication layers that allow minimization of a HDD head DFH touchdown point while maintaining good tribology performance for HDD reliability. An exemplary hard disk includes a magnetic recording layer, a carbon overcoat, and a double lubrication layer: a bonded lubrication layer and a mobile lubrication layer. The bonded lubrication layer includes a high conformity and high density first lubricant. The mobile layer include a high lubricity lubricant that promotes HDI reliability.
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