纳秒激光微织构TC4表面的抗结冰能力  

Anti-icing ability of nanosecond laser micro-textured TC4 surface

作　　者：刘玲 崔静[1] 杨广峰 LIU Ling;CUI Jing;YANG Guang-feng(Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学,天津300300

出　　处：《激光与红外》2022年第5期665-669,共5页Laser & Infrared

基　　金：国家自然科学基金项目(No.U1933107,No.U1633111);中央高校基本科研业务费项目(No.ZXH2012D011);中国民航大学科研启动经费项目(No.09QD05X)资助。

摘　　要：飞机发动机唇口表面结冰将会严重影响飞行安全,研究表明具有微纳结构的表面能有效提升其抑冰性能。文中以Ti6Al4V(TC4)为基底材料,采用纳秒脉冲激光制备TC4微结构,利用扫描电子显微镜(SEM)、接触角测量仪和冷台实验装置对样品表面的微观形貌、化学元素组成、润湿性和抑冰性能进行表征。结果表明:其他激光参数一定的情况下,扫描间距为80μm的样品表面的分形维数最高,其值为1.683,表现出优异的抑冰效果。接触角和分形维数大的表面结冰时间延迟。The icing on the surface of aircraft engine lip can seriously affect flight safety.Studies have shown that the surface with micro-nano structure can effectively improve its ice suppression performance.In this paper,Ti6Al4V(TC4)is used as the base material,and the nanosecond pulsed laser is adopted to prepare the TC4 microstructure.The microscopic morphology,chemical element composition,wetting ability and ice suppression properties of the sample surface were characterized by the scanning electron microscope(SEM),contact angle measuring instrument,and cold stage experimental device.The results show that when other laser parameters are constant,the fractal dimension of the sample surface with a scanning distance of 80μm is the highest,with a value of 1.683,showing an excellent ice suppression effect.Surfaces with large contact angles and fractal dimensions have a delay in freezing time.

关 键 词：纳秒激光微织构 TC4 超疏水 抑冰 分形维数 

分 类 号：TN249[电子电信—物理电子学]