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Université Jean Monnet – Saint-Etienne |  |
Journal articles
Modifications of roughness and wettability properties of metals induced by femtosecond laser treatment
Abstract : Topographic and wetting properties of AISI 316L stainless steel and Ti-6Al-V alloys were modified via linearly polarized femtosecond laser pulse irradiation. In order to induce a gradual evolution of the surface topography and wettability, four samples of each alloy were irradiated with different number of pulses. From the topographic point of view, a multi-scale morphology made of nano- and micro-periodic ripples was induced. The increase in the number of pulses led to the appearance of a third scale structure of waviness that is due to the laser scanning. The wettability of alloys was changed from a hydrophilic behavior to a hydrophobic one without lowering surface energies by chemical coatings. The apparent contact angle (CA) increased with increasing the number of pulses. A rise of about 50° of the apparent CA of the Ti-6Al-V was noticed.
https://hal-ujm.archives-ouvertes.fr/ujm-00757766
Contributor : Cyril Mauclair <>
Submitted on : Tuesday, November 27, 2012 - 3:42:08 PM
Last modification on : Friday, August 27, 2021 - 9:38:02 AM
Contributor : Cyril Mauclair <>
Submitted on : Tuesday, November 27, 2012 - 3:42:08 PM
Last modification on : Friday, August 27, 2021 - 9:38:02 AM