Assessment the Sliding Wear Behavior of Laser Microtexturing Ti6Al4V under Wet Conditions

Laser micro-texturing processes, compared to untreated surfaces, can improve the friction, wear and wettability behavior of sliding parts. This improvement is related to the micro-geometry and the dimensions of the texture which is also dependent on the processing parameters. This research studied t...

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Bibliographic Details
Published in:Coatings (Basel) 2019-02, Vol.9 (2), p.67
Main Authors: Vazquez Martinez, Juan, Del Sol Illana, Irene, Iglesias Victoria, Patricia, Salguero, Jorge
Format: Article
Language:English
Subjects:
Contact angle
Flux density
Friction
Friction reduction
Frictional wear
Laser beam texturing
Lasers
Lubricants & lubrication
Optical microscopy
Process parameters
Retention
Scanning electron microscopy
Sliding friction
Spectrum analysis
Texturing
Titanium alloys
Titanium base alloys
Tribology
Wear mechanisms
Wettability
Wetting
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Summary:Laser micro-texturing processes, compared to untreated surfaces, can improve the friction, wear and wettability behavior of sliding parts. This improvement is related to the micro-geometry and the dimensions of the texture which is also dependent on the processing parameters. This research studied the effect of laser textured surfaces on the tribological behavior of titanium alloy Ti6Al4V. The influence of processing parameters was analyzed by changing the scanning speed of the beam and the energy density of pulse. First, the characterization of dimensional and geometrical features of the texturized tracks was carried out. Later, their influence on the wetting behavior was also evaluated through contact angle measurements using water as a contact fluid. Then, the tribological performance of these surfaces was analyzed using a ball-on-flat reciprocating tribometer under wet and dry conditions. Finally, wear mechanisms were identified employing electronic and optical microscopy techniques capable to evaluate the wear tracks on Ti surfaces and WC–Co spheres. These analyses had determined a strong dependence between the wear behavior and the laser patterning parameters. Wear friction effects were reduced by up to a 70% replacing conventional untreated surfaces of Ti6Al4V alloy with laser textured surfaces.
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings9020067