Metal surface wettability modification by nanosecond laser surface texturing: A review

IF 1.6 Q4 ENGINEERING, BIOMEDICAL Biosurface and Biotribology Pub Date : 2022-06-07 DOI:10.1049/bsb2.12039
Zhifang Liu, Tong Niu, Yaxi Lei, Yuanxin Luo
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引用次数: 12

Abstract

Laser surface texturing (LST) is a non-contact manufacturing process for fabricating functional surfaces in a manner that improves the corresponding wettability, and is widely used in biomedicine and industry. Laser surface texturing is a facile approach that is compatible with various materials, can result in a hierarchical texture, and enables a high degree of surface wetting (i.e., extreme wetting). In addition to surface structures, surface chemical modification is a primary factor in producing extreme wetting surfaces. This review discusses the effects of various surface textures and surface chemistries on wettability. Optimal laser parameters for the desired surface texture are based on the fundamental wettability and laser mechanism. In particular, bumps in the morphology are conducive to obtaining extreme wetting. Diverse surface chemical strategies result in extreme wetting by different mechanisms. This paper makes a rigorous evaluation of the laser parameters and optimal surface chemical modifications by elucidating the relationships between the surface structure, surface chemical modification, and wettability, and in so doing, determines the final wettability. The unresolved problems of LST are presented in the conclusion. This review provides guidance, development directions, and an integrated framework for LST, which will be useful for fabricating extreme wetting surfaces on various metals.

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纳秒激光表面织构修饰金属表面润湿性的研究进展
激光表面织构(LST)是一种非接触制造工艺,以提高相应的润湿性来制造功能表面,在生物医学和工业中得到广泛应用。激光表面纹理是一种简单的方法,与各种材料兼容,可以产生分层纹理,并实现高度的表面润湿(即极端润湿)。除了表面结构外,表面化学修饰是产生极端润湿表面的主要因素。本文讨论了各种表面结构和表面化学对润湿性的影响。获得所需表面纹理的最佳激光参数是基于基本的润湿性和激光机理。特别是,形态上的凹凸有利于获得极端润湿。不同的表面化学策略通过不同的机制导致极端润湿。本文通过阐明表面结构、表面化学修饰和润湿性之间的关系,对激光参数和最佳表面化学修饰进行了严格的评估,从而确定了最终的润湿性。结论部分提出了LST尚未解决的问题。本文综述为LST的研究提供了指导、发展方向和一个完整的框架,将有助于在各种金属表面上制造极端润湿表面。
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来源期刊
Biosurface and Biotribology
Biosurface and Biotribology Engineering-Mechanical Engineering
CiteScore
1.70
自引率
0.00%
发文量
27
审稿时长
11 weeks
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