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Molecularly Thin Lubricant Layer Contact Model Accounting for Interfacial Slip

[+] Author Affiliations
Antonis I. Vakis, Melih Eriten, Andreas A. Polycarpou

University of Illinois at Urbana-Champaign, Urbana, IL

Paper No. IJTC2010-41249, pp. 397-399; 3 pages
doi:10.1115/IJTC2010-41249
From:
  • STLE/ASME 2010 International Joint Tribology Conference
  • STLE/ASME 2010 International Joint Tribology Conference
  • San Francisco, California, USA, October 17–20, 2010
  • Conference Sponsors: Tribology Division
  • ISBN: 978-0-7918-4419-9 | eISBN: 978-0-7918-3890-7
  • Copyright © 2010 by ASME

abstract

A model is presented that accounts for contact with a molecularly thin lubricant layer confined between a rigid sphere and flat substrate. The sphere is moving at a high lateral velocity inducing high shear rates and a significant increase of lubricant viscosity. Interfacial slip is modeled based on experimental and molecular dynamics data and includes effects of lubricant morphology and chemistry. The model is used to interpret experimental measurements of viscosity and slip and express them as functions of shear rate. These data can then be used in a typical head-disk interface in magnetic storage.

Copyright © 2010 by ASME
Topics: Lubricants

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