Surface texturing by pulsed Nd:YAG laser
Vilhena, Luis Miguel Silva (Author), Sedlaček, Marko (Author), Podgornik, Bojan (Author), Vižintin, Jože (Author), Babnik, Aleš (Author), Možina, Janez (Author)

URLURL - Presentation file, Visit http://dx.doi.org/10.1016/j.triboint.2009.06.003 This link opens in a new window

Introducing specific textures on a tribological surface can contribute to friction reduction in sliding contacts. In the present paper, a pulsed Nd:YAG laser emitting at 1064 nm, was used against 100Cr6 steel samples in order to produce well-defined surface micro-pores, which can act as lubricant reservoirs, micro-hydrodynamic bearings as well as traps for wear debris. Due to the high flexibility of the laser system, structural features such as shape, size, density and depth can be varied easily by changing the laser parameters. To optimize the parameters of the laser surface texturing process, an investigation was performed using different pulse numbers, various pulse energies and two different modes (single- and multi-mode). The microtextures were characterized with optical microscopy, scanning electron microscopy (SEM) and by topography techniques. The relationship between the laser processing parameters and qualitative and quantitative profile of the micro-pores was studied. Tribological testing of laser textured surfaces was performed in a low frequency-long displacement reciprocating sliding wear tester under boundary lubrication and results compared to un-textured case. Tribological comparison of textured, textured and lapped, and untextured surfaces shows only minimal influence of texturing for contact conditions investigated.

Keywords:teksturiranje površin, topografija površin, trenje, obraba, obdelave površin, laser surface texturing, surface topography, friction, wear
Work type:Not categorized (r6)
Tipology:1.08 - Published Scientific Conference Contribution
Organization:FS - Faculty of Mechanical Engineering
Number of pages:str. 1496-1504
Numbering:Vol. 42, iss. 10
ISSN on article:0301-679X
COBISS.SI-ID:11027227 Link is opened in a new window
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Record is a part of a proceedings

Title:Nordtrib 2008
COBISS.SI-ID:11059227 This link opens in a new window

Record is a part of a journal

Title:Tribology international
Shortened title:Tribol. int.
Publisher:Butterworth Scientific Limited
COBISS.SI-ID:26558976 This link opens in a new window

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