Modifications of roughness and wettability properties of metals induced by femtosecond laser treatment
Modifications of roughness and wettability properties of metals induced by femtosecond laser treatment
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DOI：
10.1016/j.apsusc.2010.12.089
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发表时间：
2011-04-01
影响因子：
6.7
通讯作者：
Audouard, E.
中科院分区：
文献类型：
--
作者：
Bizi-Bandoki, P.;Benayoun, S.;Audouard, E.
采用线偏振飞秒激光脉冲辐照对AISI 316L不锈钢和Ti-6Al-V合金的形貌和润湿性能进行了改性。为了诱导表面形貌和润湿性的逐渐演变，对每种合金的4个样品进行了不同脉冲数的辐照。从地形学的角度来看，诱导了由纳米和微周期波纹组成的多尺度形貌。脉冲数量的增加导致了波浪形的第三个尺度结构的出现，这是由于激光扫描。在不降低表面能的情况下，化学涂层使合金的润湿性由亲水性转变为疏水性。表观接触角（CA）随脉冲数的增加而增大。注意到Ti-6Al-V的表观CA上升了约50度。(C) 2011 Elsevier b.v.版权所有
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 degrees of the apparent CA of the Ti-6Al-V was noticed. (C) 2011 Elsevier B. V. All rights reserved.