Tribological degradation of head-disk interface in hard disk drives under accelerated wear condition

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

31 Scopus Citations
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Detail(s)

Original languageEnglish
Article number6642076
Pages (from-to)27-33
Journal / PublicationIEEE Transactions on Magnetics
Volume50
Issue number3
Online published21 Oct 2013
Publication statusPublished - Mar 2014

Abstract

To further increase the areal storage density of hard disk drive, one solution is to reduce the spacing between the magnetic head and disk to sub-1-nm regime. Such ultra-low spacing introduces great challenges to tribological reliability in the head-disk interface (HDI). Therefore, it is necessary to understand the characteristics and mechanisms of HDI degradation in the tribological condition. This paper investigates the degradation behaviors of HDI based on an accelerated wear experiment. Acoustic emission and thermal asperity sensors were used simultaneously to monitor the touch down dynamics before and after each cycle of the overdrive test to characterize the HDI degradation behaviors. Through analyzing the evolutions of HDI dynamic characteristics, the degradation mechanisms, including wear mechanism shift and HDI instability propagation were figured out. © 2013 IEEE.

Research Area(s)

  • Head-disk interface (HDI), Touch down (TD) dynamics, Tribological degradation, Wear

Citation Format(s)

Tribological degradation of head-disk interface in hard disk drives under accelerated wear condition. / Wang, Yu; Wei, Xiongfei; Tsui, Kwok-Leung et al.
In: IEEE Transactions on Magnetics, Vol. 50, No. 3, 6642076, 03.2014, p. 27-33.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review