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Published on: February 27, 2013
Microstructural and Wear Behavior Characterization of Porous Layers Produced by Pulsed Laser Irradiation in
Daniel Sola1, Ana Conde2, Iñaki García3
1Materials Physics Center, University of Basque Country-CSIC, Pº Manuel Lardizabal 5, San Sebastian 20.018, Spain. daniel_sola@ehu.es.
Abstract:
In this work, wear behavior and microstructural characterization of porous layers produced in glass-ceramic substrates by pulsed laser irradiation in the nanosecond range are studied under unidirectional sliding conditions against AISI316 and corundum counterbodies. Depending on the optical configuration of the laser beam and on the working parameters, the local temperature and pressure applied over the interaction zone can generate a porous glass-ceramic layer. Material transference from the ball to the porous glass-ceramic layer was observed in the wear tests carried out against the AISI316 ball counterface whereas, in the case of the corundum ball, the wear volume loss was concentrated in the porous layer. Wear rate and friction coefficient presented higher values than expected for dense glass-ceramics.
