Optimization of molecularly thin lubricant to improve bearing capacity at the head-disk interface

Chowdhury, S.; Vakis, Antonis I.; Polycarpou, Andreas A.

doi:10.1007/s00542-014-2364-8

Cited by 3 publications

(1 citation statement)

References 32 publications

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“…Lubricant transfer and evaporation affect wear resistance, and extremely high pressure and temperature conditions should be taken into account during examination. Chowdhury et al [10] unveiled the crucial elements that impact a lubricant's bearing capacity, including the viscosity of the lubricant, the velocity of the disk, and temperature effects. These factors play a significant role in mitigating the damage resulting from contact between the slider and disk.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Slider Configuration on Lubricant Depletion at the Slider/Disk Contact Interface

Chen,

Zhou,

Tang

2024

Lubricants

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With decreasing clearance between the protrusion of a slider and a disk interface, there is a higher likelihood of contact occurring during shock or vibration experienced by hard disk drives (HDDs), which may induce lubricant depletion. Based on the molecular dynamics (MD) model of perfluoropolyether lubricant with a coarse-grained beads spring approach, we compared the slider configurations’ influence on the lubricant transfer volume quantitatively. By further investigating the parameters of the cylindrical asperities, including the width and depth, as well as considering the asperity amounts of the slider, we successfully observed the lubricant depletion process during slider and disk contact. The results demonstrate that the penetration depth was reduced as the asperity amount increased, mainly owing to the increased contact area between the surfaces. The decreasing depth of the asperity and the increasing width of the asperity helped to reduce the depletion volume. In addition, the utilization of a cylindrical slider configuration can contribute to a reduction in lubricant depletion resulting from contact between the head and disk.

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Section: Introductionmentioning

confidence: 99%