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Effects of Surface Roughness on the Fly-Ability of a Thermal Protrusion Air Bearing Slider

[+] Author Affiliations
Wei Hua, Bo Liu, Shengkai Yu, Weidong Zhou, Leonard Gonzaga

A-STAR Data Storage Institute, Singapore

Paper No. IJTC2009-15025, pp. 391-393; 3 pages
doi:10.1115/IJTC2009-15025
From:
  • ASME/STLE 2009 International Joint Tribology Conference
  • ASME/STLE 2009 International Joint Tribology Conference
  • Memphis, Tennessee, USA, October 19–21, 2009
  • Conference Sponsors: Tribology Division
  • ISBN: 978-0-7918-4895-1 | eISBN: 978-0-7918-3862-4
  • Copyright © 2009 by ASME

abstract

A femto air bearing slider with thermal protrusion is studied based on three groups of surface roughness. It is observed that the air bearing force and the contact force are proportional to the value of average roughness in the minimum flying height region studied, while the intermolecular force or the electrostatic force is the smallest for the smoothest surfaces when the minimum flying height is above a certain value. As a result, the total force on the slider is the largest on the smoothest surfaces in a certain minimum flying height region. When the minimum flying height is designed in that region, the fly-ability of the slider is maximized.

Copyright © 2009 by ASME

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