Contact between a thermal flying height control slider and a disk asperity

Song, Wenping; Ovcharenko, Andrey; Yang, Min; Zheng, Hao; Talke, Frank E.

doi:10.1007/s00542-012-1591-0

Cited by 14 publications

(3 citation statements)

References 17 publications

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“…磁盘在加工过程中, 由于外界物质的引入, 会导致磁盘表面产生凸起 [19] . 学者们对磁盘表面凸起部分与磁头之间的接触已经做了大量的研究 [20,21] . 然而, 凸起部分对润滑剂在磁盘表面分布的影响, 以及磁头与磁盘表面凸起不发生接触时, 凸起部分对润滑剂在磁头/磁盘之间转移的影响都鲜有研究.…”

Section: 引言unclassified

Effect of surface topography of disk on lubricant distribution and lubricant transfer between disk and slider

Pan¹,

Yan²,

Jiang³

2014

Sci. Sin.-Tech.

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Section: 引言unclassified

Effect of surface topography of disk on lubricant distribution and lubricant transfer between disk and slider

Pan¹,

Yan²,

Jiang³

2014

Sci. Sin.-Tech.

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“…Then, to obtain more realistic contact solutions, both normal and sliding motions were applied into the FEA modeling, which enabled to measure the surface flash temperature as well as mechanical stress and deformation [21,22]. Recently, Song et al have performed an advanced FEA modeling and simulation to examine the thermomechanical contact between disk asperity and TFC slider, where the material temperature rise, plastic strain, and scratch depth/width were measured at different flying height condition [23,24]. In their FEA study, the TFC slider was modeled using the effective material properties based on the surface DLC coating and the underlying substrates, while the initial temperature was selectively applied depending on the substrate materials due to the thermal actuation technology [25].…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis simulations of thermomechanical head-disk interface contact in thermal flying-height control slider design

Song

Yeo

2016

Tribology International

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In order to achieve higher recording density in hard disk drive (HDD), thermal flyingheight control (TFC) slider design has been used to reduce the physical spacing between the read/write elements in the slider and the rotating disk surface. During the read/write operation in hard disk drives, the intermittent contact at the head-disk interface (HDI) directly affects its performance and reliability. In this study, the thermomechanical micro-contact between a TFC slider and a disk defect was systematically investigated through finite element analysis (FEA) modeling and simulations. The thermal actuation technology in a TFC slider was incorporated into the FEA model to enable the thermal protrusion of read/write sensors outward the air bearing surface (ABS). In order to obtain the scientific relationship between the thermal protrusion and the resulting HDI contact behavior, parametric FEA simulations were carried out based on the 2 3 -factorial design of experiment (DOE), where the surface temperature rise and the residual deformation on the TFC slider surface were used as the output parameters. From the statistical data analysis, it could be found that the larger thermal protrusion resulted in higher temperature rise and more residual deformation.

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“…Furthermore, defect-free media is an enabler for implementing new HDD technologies. On the other hand, in order to allow high areal density recording necessary for sustained market growth, the head disk spacing in HDD has been pushed down to an extremely small margin [1][2][3]. As a result, even defects with very small sizes are now becoming serious performance and reliability challenges.…”

Section: Introductionmentioning

confidence: 99%

A Correlative Defect Analyzer Combining Glide Test with Atomic Force Microscope

2013

Advances in Tribology

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We have developed a novel instrument combining a glide tester with an Atomic Force Microscope (AFM) for hard disk drive (HDD) media defect test and analysis. The sample stays on the same test spindle during both glide test and AFM imaging without losing the relevant coordinates. This enables an in situ evaluation with the high-resolution AFM of the defects detected by the glide test. The ability for the immediate follow-on AFM analysis solves the problem of relocating the defects quickly and accurately in the current workflow. The tool is furnished with other functions such as scribing, optical imaging, and head burnishing. Typical data generated from the tool are shown at the end of the paper. It is further demonstrated that novel experiments can be carried out on the platform by taking advantage of the correlative capabilities of the tool.

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Contact between a thermal flying height control slider and a disk asperity

Cited by 14 publications

References 17 publications

Effect of surface topography of disk on lubricant distribution and lubricant transfer between disk and slider

Effect of surface topography of disk on lubricant distribution and lubricant transfer between disk and slider

Finite element analysis simulations of thermomechanical head-disk interface contact in thermal flying-height control slider design

A Correlative Defect Analyzer Combining Glide Test with Atomic Force Microscope

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