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TECHNICAL PAPERS

Wear Characteristics of Padded Air Bearing Sliders During a Contact Take-Off Process

[+] Author and Article Information
Yong Hu

Seagate Technology, 1870 Lundy Avenue, San Jose, CA 95131-1826

J. Tribol 122(3), 628-632 (Jun 30, 1999) (5 pages) doi:10.1115/1.555412 History: Received February 05, 1999; Revised June 30, 1999
Copyright © 2000 by ASME
Topics: Force , Wear , Bearings , Disks
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References

Kasamatsu,  Y., Yamamoto,  T., Yoneoka,  S., and Mizoshita,  Y., 1995, “Stiction Free Slider for the Smooth Surface Disk,” IEEE Trans. Magn., 31, No. 6, pp. 2961–2963.
Yamamoto,  T., Yoneoka,  S., and Kasamatsu,  Y., 1998, “Stiction Free Slider for Lightly Textured Disks,” IEEE Trans. Magn., 34, No. 4, pp. 1753–1755.
Fu,  T. C., and Suzuki,  S., 1999, “Low Stiction/Low Glide Height Head-Disk Interface for High Performance Disk Drives,” J. Appl. Phys., 85, pp. 5600–5605.
Hu,  Y., 1999, “Design and Analysis of Slider’s Landing Pads for Fast Take-Off Performance in Magnetic Hard Disk Drives,” ASME J. Tribol., 121, pp. 955–960.
Bhushan, B., 1996, Tribology and Mechanics of Magnetic Storage Devices, 2nd ed., Springer-Verlag, New York.
Hu,  Y., Jones,  P. M., Chang,  P. T., and Bogy,  D. B., 1998, “Partial Contact Air Bearing Characteristics of Tripad Sliders for Proximity Recording,” ASME J. Tribol., 120, pp. 272–279.
Hu, Y., 1996, “Head-Disk-Suspension Dynamics,” Ph.D. Dissertation, Department of Mechanical Engineering, University of California at Berkeley.
Fukui,  S., and Kaneko,  R., 1988, “Analysis of Ultra-Thin Gas Film Lubrication Based on Linearized Boltzmann Equation: First Report-Derivation of a Generalized Lubrication Equation Including Thermal Creep Flow,” ASME J. Tribol., 110, pp. 335–341.
Huang,  W. D., Bogy,  D. B., and Garcia,  A. L., 1997, “Three-Dimensional Direct Simulation Monte Carlo Method for Slider Air Bearings,” Phys. Fluids, 9, No. 6, pp. 1764–1769.
Hu,  Y., and Bogy,  D. B., 1998, “Solution of the Rarefied Gas Lubrication Equation Using an Additive Correction Based Multigrid Control Volume Method,” ASME J. Tribol., 120, pp. 280–288.
Greenwood,  J. A., and Williamson,  J. B. P., 1966, “Contact of Nominally Flat Surface,” Proc. R. Soc. London, Ser. A, 295, pp. 300–319.
Leo,  H. L., Chapman,  S. R., and Crone,  R. M., 1995, “Slider/Disk Interaction During the Landing Process,” ASME J. Tribol., 117, pp. 119–123.

Figures

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Schematics of contact force profile during a take-off process
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A sub-ambient pressure air bearing surface padded with 3 landing pads. Pad 1 (up leading pad), pad 2 (down leading pad), and pad 3 (rear pad).
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Contact force profiles of the three pads during a take-off process. The pad height=20 nm. The rear pad location=1.85 mm (from LE), σ=8 nm.
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Effects of the pad height on the contact force profiles of pads 2 and 3 during a contact take-off process. The pads have a uniform height.
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Effects of the pad height on the wear characteristics of the three pads during a contact take-off process. The pads have a uniform height.
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Effects of the relative pad height on the contact force profiles of pads 2 and 3 during a contact take-off process. The rear pad height is fixed at 20 nm.
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Effects of the relative pad heights on the wear characteristics of the three pads during a contact take-off process. The rear pad height is fixed at 20 nm.
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Effects of the rear pad location (measured from LE) on the contact force profiles for the pads 2 and 3 during a contact take-off process
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Effects of the rear pad location (measured from LE) on the wear characteristics of the three pads during a contact take-off
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Effects of the surface roughness σ on the contact force profiles of the pads 2 and 3 during a contact take-off process
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Effects of the surface roughness σ on the wear characteristics of the three pads during a contact take-off process
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Effects of altitude on the contact force profiles of pads 2 and 3 during a contact take-off process
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Effects of altitude on the wear characteristics of the three pads during a contact take-off process

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