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Title: Effect of laser surface texturing (LST) on tribochemical films dynamics and friction and wear performance

Journal Article · · Wear
 [1];  [2];  [2];  [3]
  1. Argonne National Lab. (ANL), Argonne, IL (United States); Obafemi Awolowo Univ., Ile-Ife (Nigeria)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Obafemi Awolowo Univ., Ile-Ife (Nigeria)
+ Show Author Affiliations

Surface texturing or topographical design is one of the primary techniques to control friction and wear performance of surfaces in tribological contact. Laser surface texturing (LST), whereby a laser beam is used to produce regular arrays of dimples on a surface, has been demonstrated to reduce friction in conformal lubricated contacts. Friction and wear behavior under boundary lubrication is also known to be dependent on the formation and durability of the tribochemical film formed from lubricant additives. In this paper, the effects of LST on the formation and durability of tribochemical films and its consequent impacts on friction and wear behavior in various lubrication regimes were evaluated. Friction and wear tests that cycled through different lubrication regimes were conducted with both polished and LST treated surfaces using a synthetic lubricant with and without model additives of ZDDP and MoDTC mixture. In the base oil without additives, LST produced noticeable reduction in friction in all lubrication regimes. However, with low-friction model additives, friction was higher in tests with LST due to significant differences in the tribochemical film formation in the polished and LST surfaces, as well as the sliding counterface. Continuous tribo-films were formed on ball conterface rubbed against polished surfaces while the films were streaky and discontinuous in ball rubbed against LST surfaces. LST produced more wear on the ball counterface in both base and additized oils. Lastly, no measurable wear was observed in both the polished and LST flat specimens.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1338952
Alternate ID(s):
OSTI ID: 1247022
Journal Information:
Wear, Vol. 332-333, Issue C; ISSN 0043-1648
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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Cited By (5)

Effect of additives on a surface textured piston ring–cylinder liner system journal March 2019
Effects of Cast-Iron Surface Texturing on the Anti-Scuffing Performance under Starved Lubrication journal May 2019
Influence of Surface Groove Width on Tribological Performance for Cylinder Liner–Piston Ring Components journal February 2019
Influence of Laser Boriding on the Friction and wear of Sliding Couples with Bearing Alloys journal March 2019
Experimental Investigation and Mechanism Analysis of Tungsten Disulfide Soft Coated Micro-Nano Textured Self-Lubricating Dry Cutting Tools journal April 2018

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Related Subjects

36 MATERIALS SCIENCE
LST
tribochemical films
oil additives
friction
wear
lubrication regimes