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Applied Physics A

, Volume 111, Issue 4, pp 997–1011 | Cite as

The wet tribological behaviors of doughnut patterns laser-textured on DF2 tool steel under different loading conditions

  • Meng HuaEmail author
  • Guang-Neng Dong
  • Hui Zhang
  • John K. L. Ho
  • Fu-choi Chow
Invited paper

Abstract

Circular spot was irradiated by a Nd:YAG laser under a particular operational setup producing crater-like (or doughnut-like) feature, which was anticipated to generate favorable hydrodynamic effects in wet lubrication condition. It was used to ablate the pattern in either an in-line (IN) or staggered (ST) arrangement on DF2 tool steel plates. The irradiated DF2 tool steel plates with patterns of either in-lined (IN) or staggered (ST) spot arrangement, together with their nonpatterned (NP) counterparts, were respectively slid reciprocally against ASSAB 17 steel pin immerging in a basin containing Shell Tellus T32 lubricant and under loading of 400 N, 700 N, and 800 N, respectively. Test results showed the tribological behaviors of the three types of surface textures getting poorer with the increase of loading. Study demonstrated that ST gave superior nominal tribological characteristics, followed by IN and NP. Relevant mechanisms were also elucidated by analyzing SEM micrograph, PGI graphic, and Talysurf surface profiles of surface morphology, and EDX spectra. The existence of hydrodynamic effect of the ablated spot was simply verified by a simplified numerical simulation.

Keywords

Friction Coefficient Tribological Behavior Mating Surface Wear Loss Hydrodynamic Effect 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

The work described in this paper was supported by grants from: (i) the Research Grants Council of Hong Kong Special Administrative Region, China (Project No. CityU 1175/03E); and (ii) Natural Science Foundation of China (NSFC project No. NSF51175406).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Meng Hua
    • 1
    Email author
  • Guang-Neng Dong
    • 2
  • Hui Zhang
    • 2
  • John K. L. Ho
    • 1
  • Fu-choi Chow
    • 1
  1. 1.MBE DepartmentCity University of Hong KongKowloonHong Kong
  2. 2.Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing SystemXi’an Jiaotong UniversityXi’anP.R. China

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