Contact Vibration of Micro-Textured Sliders

Xu, Junguo; Tokisue, Hiromitsu; Tanaka, Hideaki; Matsumoto, Masaaki

doi:10.1115/1.1398290

Cited by 36 publications

(21 citation statements)

References 9 publications

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“…Our results showed that even completely filled dimples can have a positive hydrodynamic effect if a preferred adherence of wear particles at the dimples results in the formation of bumps. Such a reversed microtexturing was successfully used in hard disc drives [16,17]. The third effect often postulated in literature is the storing of lubricant in the dimples (secondary lubrication effect) [7,18,19].…”

Section: Resultsmentioning

confidence: 99%

Experimental Analysis of Microstructured Steel Surfaces for Wet Tribological Applications in the Low Velocity Regime

Chlipala

Schneider

Schulze

2015

Conference Papers in Science

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The surface topography plays an important role in the design of a function-optimised surface. Therefore, the influence of topography with microsized structures produced by laser surface texturing (LST) is experimentally examined under lubricated sliding conditions. The structured specimens were made of AISI 51200 (DIN 100Cr6) hardened to about 800 HV. Concerning the requirements of tribological testing without any debris caused by the preprocessing, the structuring was carried out using a picosecond laser system (Trumpf TruMicro) with 6 ps pulse duration. A laboratory pin-on-disc tribometer (Plint TE-92 HS) was used for the tests, which were run under wet conditions with counterbodies made of bronze and steel at a nominal contact pressure of up to 4 MPa and sliding speeds between 0.04 and 2.0 m/s. Furthermore, start-stop cycles with accelerating and decelerating shares were used to simulate an automotive start-stop system. In the tribological experiments, a significant reduction of the friction coefficient was observed compared to sliding pairs without microstructured pin surfaces. Whereas no measureable wear occurred on the steel pins and discs, the bronze discs showed a significant amount of wear and the microstructures on the pin surfaces mated against bronze discs were almost completely filled with wear debris.

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Section: Resultsmentioning

confidence: 99%

Experimental Analysis of Microstructured Steel Surfaces for Wet Tribological Applications in the Low Velocity Regime

Chlipala

Schneider

Schulze

2015

Conference Papers in Science

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“…Xu et al fabricated micro-textured sliders by ion-etching, and reported that the amplitude of the slider vibration is strongly related to the real area of contact at the HDI (Xu and Tokisue 2002). The results showed that a textured slider is effective to reduce friction force.…”

Section: Introductionmentioning

confidence: 90%

Air-bearing surface chemical modification for low-friction head–disk interface

Shimizu

Saegusa

et al. 2006

Microsyst Technol

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As a chemical modification of slider air bearing surface (ABS), fluorine ion implantation (FII) was conducted. FII treated ABS was fabricated to reduce slider surface energy, which is expected to reduce adhesion and friction force between the slider and disk. Tribological performance, such as slider flyability, was experimentally investigated. Touchdown speed, corresponds to a flying height of about 0.4 nm, was reduced by FII treatment. Slider touch-down and take-off hysteresis was also improved by reducing the adhesive force of the lubricant by fluorine-ion implantation. AE output and friction force were also reduced in the drag test. FII treated slider showed a 45% reduction of AE amplitude and 14% reduction of friction force. FII treatment was confirmed to be effective in improving slider flyability.

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“…3.2 Slider with controlled texture/roughness Xu et al (2002) found that a micro-textured slider could reduce the vibration from contact because of its low frictional force. We speculated that a textured slider could also effectively decrease intermolecuar force from the head disk interface acting on the ABS.…”

Section: Effect Of Roughness On Intermolecular Forcementioning

confidence: 99%

“…Xu et al (2002) found that a microtextured slider could reduce the vibration due to contact because of its low frictional force. Zhang et al (2005) recently discovered that texturing could be used to reduce the effect of intermolecular forces.…”

Section: Introductionmentioning

confidence: 98%

Numerical simulation of effect of roughness/texture of slider surface on intermolecular force

Shimizu

2006

Microsyst Technol

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We investigated that what influence surface roughness had on the intermolecular forces acting at the head/disk interface. A model was developed based on a probabilistic description of the slider and disk surfaces. The results obtained from our research indicated that a rougher surface for the slider increased the intermolecular force slightely more than a smooth surface did. The intermolecular force on the slider was decreased by shifting the slider's mean plane. We concluded that it was possible in practice to design an air bearing surface with a lower intermolecular force using a smooth but narrower trailing-edge-pad, a textured/rough trailing pad with at least a 2-nm mean plane shift and a pitch angle designed larger than 100 lrad.

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Contact Vibration of Micro-Textured Sliders

Cited by 36 publications

References 9 publications

Experimental Analysis of Microstructured Steel Surfaces for Wet Tribological Applications in the Low Velocity Regime

Experimental Analysis of Microstructured Steel Surfaces for Wet Tribological Applications in the Low Velocity Regime

Air-bearing surface chemical modification for low-friction head–disk interface

Numerical simulation of effect of roughness/texture of slider surface on intermolecular force

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