期刊
WEAR
卷 271, 期 3-4, 页码 523-528出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.wear.2010.03.029
关键词
Wetting; Surface roughness; Contact angle; Functional surfaces; Lubrication
资金
- EPSRC [EP/F065019/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F065019/1] Funding Source: researchfish
Wetting of real engineering surfaces occurs in many industrial applications (liquid coating, lubrication, printing, painting,...). Forced and natural wetting can be beneficial in many cases, providing lubrication and therefore reducing friction and wear. However the wettability of surfaces can be strongly affected by surface roughness. This influence can be very significant for static and dynamic wetting [1]. In this paper authors experimentally investigate the roughness influence on contact angle measurements and propose a simple model combining Wenzel and Cassie-Baxter theories with simple 20 roughness profile analysis. The modelling approach is applied to real homogeneous anisotropic surfaces, manufactured on a wide range of engineering materials including aluminium alloy, iron alloy, copper, ceramic, plastic (poly-methylmethacrylate: PMMA) and titanium alloy. (C) 2010 Elsevier B.V. All rights reserved.
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