A general strategy towards superhydrophobic self-cleaning and anti-corrosion metallic surfaces : an example with aluminum alloy
Corrosion and contamination of metallic structures can cause loss of their functionality as well as aesthetic values. In this study, we describe a general strategy to prepare superhydrophobic self-cleaning and anti-corrosion surfaces for metallic structures. As a specific example, a superhy-drophobi...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/152939 |
| _version_ | 1826119782613647360 |
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| author | Zheng, Shunli Li, Cheng Zhang, Yupeng Xiang. Tengfei Cao, Ying Li, Quanli Chen, Zhong |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Zheng, Shunli Li, Cheng Zhang, Yupeng Xiang. Tengfei Cao, Ying Li, Quanli Chen, Zhong |
| author_sort | Zheng, Shunli |
| collection | NTU |
| description | Corrosion and contamination of metallic structures can cause loss of their functionality as well as aesthetic values. In this study, we describe a general strategy to prepare superhydrophobic self-cleaning and anti-corrosion surfaces for metallic structures. As a specific example, a superhy-drophobic coating (SHC) on aluminum alloy was prepared by a simple etching combined with the decoration of a low-surface-energy material. The optimal SHC has a water contact angle (CA) at ~157.4◦ and a sliding angle (SA) of ~8.3◦ due to the synergy of binary hierarchical structures and chemical modification. The SHC showed low adhesion to dry contaminants and a series of liquids, displaying a good self-cleaning effect. The SHC maintained superhydrophobicity after exposure to air and humid condition at 60◦C for 7 days. In addition, the electrochemical measurements reveal that the anti-corrosion performance was enhanced by reducing the corrosion current density (Jcorr) by 1 order of magnitude and increasing the corrosion potential (Ecorr) by 0.527 V as compared to the bare Al alloy substrate after immersion for 168 h. |
| first_indexed | 2024-10-01T05:05:45Z |
| format | Journal Article |
| id | ntu-10356/152939 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:05:45Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1529392023-07-14T15:50:45Z A general strategy towards superhydrophobic self-cleaning and anti-corrosion metallic surfaces : an example with aluminum alloy Zheng, Shunli Li, Cheng Zhang, Yupeng Xiang. Tengfei Cao, Ying Li, Quanli Chen, Zhong School of Materials Science and Engineering Engineering::Materials Superhydrophobic Aluminum Alloy Corrosion and contamination of metallic structures can cause loss of their functionality as well as aesthetic values. In this study, we describe a general strategy to prepare superhydrophobic self-cleaning and anti-corrosion surfaces for metallic structures. As a specific example, a superhy-drophobic coating (SHC) on aluminum alloy was prepared by a simple etching combined with the decoration of a low-surface-energy material. The optimal SHC has a water contact angle (CA) at ~157.4◦ and a sliding angle (SA) of ~8.3◦ due to the synergy of binary hierarchical structures and chemical modification. The SHC showed low adhesion to dry contaminants and a series of liquids, displaying a good self-cleaning effect. The SHC maintained superhydrophobicity after exposure to air and humid condition at 60◦C for 7 days. In addition, the electrochemical measurements reveal that the anti-corrosion performance was enhanced by reducing the corrosion current density (Jcorr) by 1 order of magnitude and increasing the corrosion potential (Ecorr) by 0.527 V as compared to the bare Al alloy substrate after immersion for 168 h. Agency for Science, Technology and Research (A*STAR) Published version This study was supported by the Natural Science Foundation of Anhui Province (Grant No. 2008085QH374), Improvement Program of Basic and Clinical Cooperative Research of Anhui Medical University (Grant No. 2019xkjT019), Research Improvement Program in Stomatologic Hospital & College of Anhui Medical University (Grant No. 2020kqkyT02), Grants for Scientific Research of BSKY (Grant No. XJ201918) from Anhui Medical University and the Agency for Science, Technology and Research (A*STAR) of Singapore (Grant No. SERC 1528000048). 2021-10-22T00:54:04Z 2021-10-22T00:54:04Z 2021 Journal Article Zheng, S., Li, C., Zhang, Y., Xiang. Tengfei, Cao, Y., Li, Q. & Chen, Z. (2021). A general strategy towards superhydrophobic self-cleaning and anti-corrosion metallic surfaces : an example with aluminum alloy. Coatings, 11(7), 788-. https://dx.doi.org/10.3390/coatings11070788 2079-6412 https://hdl.handle.net/10356/152939 10.3390/coatings11070788 2-s2.0-85110053160 7 11 788 en SERC 1528000048 Coatings © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). application/pdf |
| spellingShingle | Engineering::Materials Superhydrophobic Aluminum Alloy Zheng, Shunli Li, Cheng Zhang, Yupeng Xiang. Tengfei Cao, Ying Li, Quanli Chen, Zhong A general strategy towards superhydrophobic self-cleaning and anti-corrosion metallic surfaces : an example with aluminum alloy |
| title | A general strategy towards superhydrophobic self-cleaning and anti-corrosion metallic surfaces : an example with aluminum alloy |
| title_full | A general strategy towards superhydrophobic self-cleaning and anti-corrosion metallic surfaces : an example with aluminum alloy |
| title_fullStr | A general strategy towards superhydrophobic self-cleaning and anti-corrosion metallic surfaces : an example with aluminum alloy |
| title_full_unstemmed | A general strategy towards superhydrophobic self-cleaning and anti-corrosion metallic surfaces : an example with aluminum alloy |
| title_short | A general strategy towards superhydrophobic self-cleaning and anti-corrosion metallic surfaces : an example with aluminum alloy |
| title_sort | general strategy towards superhydrophobic self cleaning and anti corrosion metallic surfaces an example with aluminum alloy |
| topic | Engineering::Materials Superhydrophobic Aluminum Alloy |
| url | https://hdl.handle.net/10356/152939 |
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