How does substrate roughness affect the service life of a superhydrophobic coating? | |
Department | 固体润滑国家重点实验室 |
Zhang, Xin1; Mo, Jiliang1; Si YF(司一帆)2,3; Guo ZG(郭志光)2,3 | |
2018 | |
Source Publication | Applied Surface Science |
ISSN | 0169-4332 |
Volume | 441Pages:491-499 |
Abstract | Although the development of superhydrophobic coatings is rapidly maturing, issues related to their low mechanical durability persist. In this context, the effect of substrate roughness on the service life of superhydrophobic coatings was studied. In this study, superhydrophobic coatings were fabricated on sandpapers of different roughness and reciprocating wear tests were conducted. The wear-resistance number of the superhydrophobic coating, defined as the maximum number of friction cycles after which the superhydrophobic surface started to lose its superhydrophobicity, increased from 50 to 24,000 with an increase in the substrate roughness from 2000 CW to 240 CW (CW is defined as the number of particles arranged in an inch), while it decreased from 24,000 to 17,000 with a further increase in the substrate roughness from 240 CW to 60 CW. Observations of the surface structure and wear analyses indicated that the superhydrophobic material infiltrated the spaces between the sand grains, and the rough peaks could consequently protect the superhydrophobic material during the wear tests. However, this protection weakens when the substrate roughness increases or decreases beyond certain values. Furthermore, these phenomena and results were also verified by applying the superhydrophobic coatings to different types of common substrates. |
Keyword | Superhydrophobic Coating Service Life Substrate Roughness Wear-resistance Superhydrophobicity |
Subject Area | 材料科学与物理化学 |
DOI | 10.1016/j.apsusc.2018.01.232 |
Funding Organization | the National Nature Science Foundation of China (No. 51675448;No. 51375408) |
Indexed By | SCI |
Language | 英语 |
Funding Project | 空间润滑材料研究组 |
compositor | 第三作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/23631 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Mo, Jiliang |
Affiliation | 1.Tribology Research Institute, School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, People’s Republic of China 2.Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People’s Republic of China 3.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China |
Recommended Citation GB/T 7714 | Zhang, Xin,Mo, Jiliang,Si YF,et al. How does substrate roughness affect the service life of a superhydrophobic coating?[J]. Applied Surface Science,2018,441:491-499. |
APA | Zhang, Xin,Mo, Jiliang,Si YF,&Guo ZG.(2018).How does substrate roughness affect the service life of a superhydrophobic coating?.Applied Surface Science,441,491-499. |
MLA | Zhang, Xin,et al."How does substrate roughness affect the service life of a superhydrophobic coating?".Applied Surface Science 441(2018):491-499. |
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