Modifications of roughness and wettability properties of metals induced by femtosecond laser treatment - Université Jean-Monnet-Saint-Étienne Access content directly
Journal Articles Applied Surface Science Year : 2011

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.

Dates and versions

ujm-00757766 , version 1 (27-11-2012)

Identifiers

Cite

Pavel Bizi-Bandoki, Stéphane Benayoun, Stéphane Valette, Bernard Beaugiraud, Éric Audouard. Modifications of roughness and wettability properties of metals induced by femtosecond laser treatment. Applied Surface Science, 2011, 257 (12), pp.5213-5218. ⟨10.1016/j.apsusc.2010.12.089⟩. ⟨ujm-00757766⟩
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