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.
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Applied Surface Science, Elsevier, 2011, 257 (12), pp.5213-5218. 〈10.1016/j.apsusc.2010.12.089〉
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https://hal-ujm.archives-ouvertes.fr/ujm-00757766
Contributeur : Cyril Mauclair <>
Soumis le : mardi 27 novembre 2012 - 15:42:08
Dernière modification le : mercredi 25 juillet 2018 - 14:05:31

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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, Elsevier, 2011, 257 (12), pp.5213-5218. 〈10.1016/j.apsusc.2010.12.089〉. 〈ujm-00757766〉

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