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Fabrication of textured surface with controllable wettability via laser-thermal hybrid processing

文献类型： 外文期刊

作者： Wang, Qinghua 1 ; Wang, Huixin 3 ;

作者机构： 1.Southeast Univ, Sch Mech Engn, Nanjing 211189, Peoples R China

2.Jiangsu Key Lab Design & Manufacture Micronano B, Nanjing 211189, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Nanjing 210014, Peoples R China

关键词： Laser processing; Surfaces; Texture; Microstructure; Functional

期刊名称：MATERIALS LETTERS （ 影响因子：3.574； 五年影响因子：3.197 ）

ISSN： 0167-577X

年卷期： 2022 年 315 卷

页码：

收录情况： SCI

摘要： Controlling the wettability of metallic surface would be beneficial for many industrial and commercial applications. In this paper, controllable surface wettability was achieved by a facile laser-thermal hybrid processing technique. Either superhydrophobicity or superhydrophilicity was achieved on the laser textured surface through regulating heat treatment temperature. Surface morphology analysis indicated that micro-bumps were created via direct laser texturing with nanoparticles covered on top. In addition, contact angle measurements exhibited the wettability difference for the laser textured surfaces subject to heat treatment at different temperatures. Moreover, surface chemistry was analyzed to elucidate the underlying mechanism for the thermal-induced wettability difference. This study provides a simple and low-cost method for surface wettability control, which is expected to render more practical applications.

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