Eco-Friendly Anticorrosion Superhydrophobic Al2O3@PDMS Coating With Salt Deliquescence Self-Coalescence Behaviors Under High Atmospheric Humidity
Bio-inspired superhydrophobic coatings have been demonstrated to be promising anticorrosion materials. However, developing robust superhydrophobic coatings through simple one-step fluorine-free procedures to meet various functional requirements remains a major challenge. In this study, we fabricated...
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Frontiers Media S.A.
2022-01-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2022.839948/full |
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| author | Binbin Zhang Binbin Zhang Binbin Zhang Jiayang Yan Weichen Xu Teng Yu Zhuoyuan Chen Jizhou Duan Jizhou Duan Jizhou Duan |
| author_facet | Binbin Zhang Binbin Zhang Binbin Zhang Jiayang Yan Weichen Xu Teng Yu Zhuoyuan Chen Jizhou Duan Jizhou Duan Jizhou Duan |
| author_sort | Binbin Zhang |
| collection | DOAJ |
| description | Bio-inspired superhydrophobic coatings have been demonstrated to be promising anticorrosion materials. However, developing robust superhydrophobic coatings through simple one-step fluorine-free procedures to meet various functional requirements remains a major challenge. In this study, we fabricated an eco-friendly superhydrophobic Al2O3@PDMS composite coating with mechanical robustness based on Al2O3 NPs, PDMS, and spray coating technique. To characterize surface morphologies, chemical compositions, surface wettability, and anticorrosion properties, FE-SEM, EDS, XPS, contact angle meter, electrochemical impendence spectroscopy, and potentiodynamic polarization techniques were employed. The electrochemical results show that |Z|0.01 Hz and Rct values of the superhydrophobic Al2O3@PDMS coating were four orders of magnitude higher than bare Q235 carbon steel, indicating a significant improvement in corrosion resistance. Furthermore, the deliquescence behaviors of NaCl salt particles and the instantaneous self-coalescence phenomenon were recorded under high atmospheric humidity to suggest that a superhydrophobic surface with Cassie–Baxter interfacial contacts can serve as an efficient barrier to suppress the formation of saline liquid thin films and protect the underlying substrate from corrosion. This robust superhydrophobic Al2O3@PDMS coating is expected to be easily applied to a variety of substrates and to find potential applications for liquid repellency, self-cleaning, corrosion resistance, and other properties. |
| first_indexed | 2024-12-20T10:23:15Z |
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| id | doaj.art-45bfd12a85f946fe9a70d884ae7a308e |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-12-20T10:23:15Z |
| publishDate | 2022-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj.art-45bfd12a85f946fe9a70d884ae7a308e2022-12-21T19:43:53ZengFrontiers Media S.A.Frontiers in Materials2296-80162022-01-01910.3389/fmats.2022.839948839948Eco-Friendly Anticorrosion Superhydrophobic Al2O3@PDMS Coating With Salt Deliquescence Self-Coalescence Behaviors Under High Atmospheric HumidityBinbin Zhang0Binbin Zhang1Binbin Zhang2Jiayang Yan3Weichen Xu4Teng Yu5Zhuoyuan Chen6Jizhou Duan7Jizhou Duan8Jizhou Duan9CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, ChinaOpen Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, ChinaCenter for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, ChinaCAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, ChinaCAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, ChinaCAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, ChinaSchool of Materials Science and Hydrogen Energy, Foshan University, Foshan, ChinaCAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, ChinaOpen Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, ChinaCenter for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, ChinaBio-inspired superhydrophobic coatings have been demonstrated to be promising anticorrosion materials. However, developing robust superhydrophobic coatings through simple one-step fluorine-free procedures to meet various functional requirements remains a major challenge. In this study, we fabricated an eco-friendly superhydrophobic Al2O3@PDMS composite coating with mechanical robustness based on Al2O3 NPs, PDMS, and spray coating technique. To characterize surface morphologies, chemical compositions, surface wettability, and anticorrosion properties, FE-SEM, EDS, XPS, contact angle meter, electrochemical impendence spectroscopy, and potentiodynamic polarization techniques were employed. The electrochemical results show that |Z|0.01 Hz and Rct values of the superhydrophobic Al2O3@PDMS coating were four orders of magnitude higher than bare Q235 carbon steel, indicating a significant improvement in corrosion resistance. Furthermore, the deliquescence behaviors of NaCl salt particles and the instantaneous self-coalescence phenomenon were recorded under high atmospheric humidity to suggest that a superhydrophobic surface with Cassie–Baxter interfacial contacts can serve as an efficient barrier to suppress the formation of saline liquid thin films and protect the underlying substrate from corrosion. This robust superhydrophobic Al2O3@PDMS coating is expected to be easily applied to a variety of substrates and to find potential applications for liquid repellency, self-cleaning, corrosion resistance, and other properties.https://www.frontiersin.org/articles/10.3389/fmats.2022.839948/fullanticorrosionsuperhydrophobicfluorine-freesalt deliquescenceatmospheric corrosion |
| spellingShingle | Binbin Zhang Binbin Zhang Binbin Zhang Jiayang Yan Weichen Xu Teng Yu Zhuoyuan Chen Jizhou Duan Jizhou Duan Jizhou Duan Eco-Friendly Anticorrosion Superhydrophobic Al2O3@PDMS Coating With Salt Deliquescence Self-Coalescence Behaviors Under High Atmospheric Humidity Frontiers in Materials anticorrosion superhydrophobic fluorine-free salt deliquescence atmospheric corrosion |
| title | Eco-Friendly Anticorrosion Superhydrophobic Al2O3@PDMS Coating With Salt Deliquescence Self-Coalescence Behaviors Under High Atmospheric Humidity |
| title_full | Eco-Friendly Anticorrosion Superhydrophobic Al2O3@PDMS Coating With Salt Deliquescence Self-Coalescence Behaviors Under High Atmospheric Humidity |
| title_fullStr | Eco-Friendly Anticorrosion Superhydrophobic Al2O3@PDMS Coating With Salt Deliquescence Self-Coalescence Behaviors Under High Atmospheric Humidity |
| title_full_unstemmed | Eco-Friendly Anticorrosion Superhydrophobic Al2O3@PDMS Coating With Salt Deliquescence Self-Coalescence Behaviors Under High Atmospheric Humidity |
| title_short | Eco-Friendly Anticorrosion Superhydrophobic Al2O3@PDMS Coating With Salt Deliquescence Self-Coalescence Behaviors Under High Atmospheric Humidity |
| title_sort | eco friendly anticorrosion superhydrophobic al2o3 pdms coating with salt deliquescence self coalescence behaviors under high atmospheric humidity |
| topic | anticorrosion superhydrophobic fluorine-free salt deliquescence atmospheric corrosion |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2022.839948/full |
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