Using laser ablation to give metallic surfaces hydrophobic/icephobic properties

这个Engage项目的目标是支持全球参与者和飞机制造商普惠公司 加拿大在开发新的飞机材料，从本质上防止形成的 冰在操作过程中-一个恒定的问题，在漫长的加拿大冬季期间，流动性需要 树立政治意识通过一个新的大学-产业合作，这将涉及教授的团队。 INRS-ÉMT的Légaré和加拿大普惠公司的研发团队，我们将开发一种光学装置， 将飞机材料所需的表面改性从目前的实验室规模扩大到工业规模， 相关的一必要的表面改性是基于材料烧蚀获得所谓的莲花 效果目前的实验室方法学的逐点扫描的一个单一的激光焦点超过毫米大小 样品在材料的疏水性（即防水性）方面导致非常令人印象深刻的结果，但是非常不好。 耗时，因此还不适用于工业制造过程。我们的目标 合作的努力是开发一种基于高功率激光器的技术，以在非常大的范围内处理更大的样品。 短时间这将使工业合作伙伴真正受益于这项尖端技术， 飞机零件都是几十米的规模。我们的努力将包括对参数空间的全面探索， 脉冲持续时间（从飞秒到皮秒的1000倍，1飞秒= 0.00000000000001秒）、脉冲能量和激光发射次数以及治疗 大样本同时改性样品表面将在内部进行表征， 结果将在INRS-ÉMT和Pratt & Whitney的两个团队中进行密切讨论。的 实验测量将在先进激光光源（ALLS）上进行， 为了估计目前可用的处理率方面的潜力或限制， 激光技术

The goal of this Engage project is to support the global player and aircraft manufacturer Pratt & Whitney Canada in the development of new airplane materials that are intrinsically protected against the formation of ice during operation - a constant issue in the long Canadian winters during which mobility needs to be maintained. Through a new university-industry collaboration, which will involve the team of Prof. François Légaré from INRS-ÉMT and the R&D team of Pratt & Whitney Canada, we will develop an optical setup to scale the required surface modification of airplane material from the present laboratory scale to an industrially relevant one. The necessary surface modification is based on material ablation to obtain the so-called Lotus effect. The current laboratory methology of a point-by-point scanning of a single laser focus over a mm sized sample leads to very impressive results in terms of material's hydrophobicity (i.e. water repellence), but is very time consuming and thus not yet applicable to industrial manufacturing processes. The goal of our collaborative effort is to develop a technique based on high power lasers to treat much larger samples in a very short time. This would allow the industrial partner to truly benefit from this cutting edge technology since airplane parts are on the tens of meters scale. Our effort will include a full exploration of the parameter space in terms of pulse duration (from the femtosecond to the 1000 times longer picosecond range, 1femtosecond = 0.000000000000001 second), pulse energy and number of laser shots as well as different methods to treat a large sample area simultaneously. The modified sample surface will be characterized in house and all the results will be closely discussed among the two teams involved, from INRS-ÉMT and Pratt & Whitney. The experimental measurements will be performed at the Advanced Laser Light Source (ALLS) and they will be essential in order to estimate the potential or limitations in terms of processing rates with currently available laser technologies.