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Evaluation of tribological performance for laser textured surfaces with diverse wettabilities under water/oil lubrication environments

文献类型： 外文期刊

作者： Wang, Huixin 1 ; Ma, Yunhai 3 ; Bai, Zongchun 1 ; Liu, Jianlong 1 ; Huo, Lianfei 1 ; Wang, Qinghua 2 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Nanjing 210014, Peoples R China

2.Southeast Univ, Sch Mech Engn, Nanjing 211189, Peoples R China

3.Jilin Univ, Coll Biol & Agr Engn, Changchun 130022, Peoples R China

4.Jiangsu Key Lab Design & Manufacture Micronano Bio, Nanjing 211189, Peoples R China

5.Southeast Univ, Sch Mech Engn, Jiangsu Key Lab Design & Manufacture Micronano Bio, Nanjing 211189, Peoples R China

关键词： Friction coefficient; Water; oil lubrication; Micro; nanostructure; Laser texturing; Chemical treatment; Wettability

期刊名称：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS （ 影响因子：5.518； 五年影响因子：4.746 ）

ISSN： 0927-7757

年卷期： 2022 年 645 卷

页码：

收录情况： SCI

摘要： Friction and wear are considered as one of the major issues for engineering applications where surface interactions exist. Textured surface with modified surface functionalities as well as lubrication condition will greatly affect the tribological performance. In this work, laser-based surface treatment methods were developed to modify the physicochemical properties of the textured surfaces. The surface microstructure, contact angle, chemical composition and tribological performance under different lubrication conditions of the fabricate surfaces were evaluated and analyzed. The experimental results indicate that the surfaces fabricated by laser texturing combined with chemical immersion or long-time storage in air obtain distinct superhydrophobicity, and the superhydrophobic surfaces render significantly reduced friction coefficient in both starved-water or starved-oil environments. It is believed that the surface texture, wettability and chemistry have combined effects on the tribological performance, which can facilitate the formation of a relative thicker lubricant film on the friction zone, and thus the effective contact area between the friction ball and the surface is reduced. This work is expected to provide effective methods to design and fabricate textured surfaces with different surface properties aiming to enhance the tribological performance, thus benefiting various industrial sectors that have strong demand for anti-friction surface.

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