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Tribological Behavior of Oil-Lubricated Laser Textured Surfaces in Conformal Flat and Point Contacts

[+] Author Affiliations
Andriy Kovalchenko, Oyelayo Ajayi, Ali Erdemir, George Fenske

Argonne National Laboratory, Argonne, IL

Izhak Etsion

Technion – Israel Institute of Technology, Haifa, Israel

Paper No. WTC2005-64309, pp. 525-526; 2 pages
doi:10.1115/WTC2005-64309
From:
  • World Tribology Congress III
  • World Tribology Congress III, Volume 2
  • Washington, D.C., USA, September 12–16, 2005
  • Conference Sponsors: Tribology Division
  • ISBN: 0-7918-4202-9 | eISBN: 0-7918-3767-X
  • Copyright © 2005 by ASME

abstract

The effects of laser surface texturing (LST), which involves the creation of an array of microdimples on the surface with laser, on friction and wear behavior of oil-lubricated steel surfaces were evaluated. Tests were conducted in unidirectional sliding in both the conformal and non-conformal contact configurations with a pin-on-disc test rig using fully formulated synthetic oil lubricant. In conformal contact, LST expanded the operating conditions for mixed and hydrodynamic lubrication regimes to higher loads and slower speeds i.e. the Stribeck curve was shifted to the left. LST was also observed to reduce the magnitude of friction coefficients in the boundary regime. For the non-conformal contact configuration, LST produced more wear on the rubbing counterface compared to untreated surfaces. This also accelerated the run-in process in the tests with LST treated surfaces.

Copyright © 2005 by ASME
Topics: Tribology , Lasers

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