Superhydrophobicity and high corrosion resistance of secondary alkane sulphonate (SAS) modified Li-Al LDH film in-situ grown on aluminum alloy
In this work, a secondary alkane sulfonate (SAS) modified Li-Al LDH film (SLDH) with high corrosion resistance by a simple in-situ growth on aluminium alloy 6N01. Water contact angle (WCA) and scanning electron microscopy (SEM) revealed that the film was fabricated with a flower-shaped microstructur...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Corrosion Communications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667266923000014 |
| _version_ | 1797844244514209792 |
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| author | Xinyu Pan Xiaohu Luo Ji Li Xiaoping Zhang Xihong Yu Chengliang Zhou Bo Chen Yali Liu |
| author_facet | Xinyu Pan Xiaohu Luo Ji Li Xiaoping Zhang Xihong Yu Chengliang Zhou Bo Chen Yali Liu |
| author_sort | Xinyu Pan |
| collection | DOAJ |
| description | In this work, a secondary alkane sulfonate (SAS) modified Li-Al LDH film (SLDH) with high corrosion resistance by a simple in-situ growth on aluminium alloy 6N01. Water contact angle (WCA) and scanning electron microscopy (SEM) revealed that the film was fabricated with a flower-shaped microstructure and highly superhydrophobic performance (WCA=153°). XRD patterns and FTIR spectrum revealed that SAS species were intercalated into SLDH. X-ray photoelectron spectroscopy (XPS) analysis indicated that SLDH was mainly composed of C, O, S, Al and Li. Potentiodynamic polarization (PDP) curves proved that SLDH (icorr = 9.169 × 10−8 A/cm2) provided pronounced protection than that of CLDH (icorr = 9.011 × 10−7 A/cm2), and electrochemical impedance spectra (EIS) demonstrated that corrosion resistance was improved. Neutral salt spray (NSS) tests exhibited that compared to CLDH with severe pitting corrosion, SLDH was virtually undamaged after 360 h exposure. Based on the above results, a sound inhibition mechanism of SLDH was inferred to be a dual effect, including the barrier action of superhydrophobic surface and the ion exchange of intercalated SAS with aggressive chlorides. In conclusion, the special divergent long-chain structure of SAS with low surface energy results in the superhydrophobicity of SLDH. |
| first_indexed | 2024-04-09T17:19:10Z |
| format | Article |
| id | doaj.art-3234267db6cd45de9dbad8cbee43e22d |
| institution | Directory Open Access Journal |
| issn | 2667-2669 |
| language | English |
| last_indexed | 2024-04-09T17:19:10Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Corrosion Communications |
| spelling | doaj.art-3234267db6cd45de9dbad8cbee43e22d2023-04-19T04:23:33ZengElsevierCorrosion Communications2667-26692023-03-0192735Superhydrophobicity and high corrosion resistance of secondary alkane sulphonate (SAS) modified Li-Al LDH film in-situ grown on aluminum alloyXinyu Pan0Xiaohu Luo1Ji Li2Xiaoping Zhang3Xihong Yu4Chengliang Zhou5Bo Chen6Yali Liu7College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, ChinaCollege of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China; Guizhou General Colleges and Universities of Engineering Research Center of Corrosion and Anticorrosion of Materials, Duyun 558000, ChinaSINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, ChinaCollege of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, ChinaSokan Research Institute of Advanced Surface Treatment and Functional Coatings, Changsha 410600, ChinaCollege of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, ChinaCollege of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, ChinaCollege of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China; Corresponding author.In this work, a secondary alkane sulfonate (SAS) modified Li-Al LDH film (SLDH) with high corrosion resistance by a simple in-situ growth on aluminium alloy 6N01. Water contact angle (WCA) and scanning electron microscopy (SEM) revealed that the film was fabricated with a flower-shaped microstructure and highly superhydrophobic performance (WCA=153°). XRD patterns and FTIR spectrum revealed that SAS species were intercalated into SLDH. X-ray photoelectron spectroscopy (XPS) analysis indicated that SLDH was mainly composed of C, O, S, Al and Li. Potentiodynamic polarization (PDP) curves proved that SLDH (icorr = 9.169 × 10−8 A/cm2) provided pronounced protection than that of CLDH (icorr = 9.011 × 10−7 A/cm2), and electrochemical impedance spectra (EIS) demonstrated that corrosion resistance was improved. Neutral salt spray (NSS) tests exhibited that compared to CLDH with severe pitting corrosion, SLDH was virtually undamaged after 360 h exposure. Based on the above results, a sound inhibition mechanism of SLDH was inferred to be a dual effect, including the barrier action of superhydrophobic surface and the ion exchange of intercalated SAS with aggressive chlorides. In conclusion, the special divergent long-chain structure of SAS with low surface energy results in the superhydrophobicity of SLDH.http://www.sciencedirect.com/science/article/pii/S2667266923000014LDHSASSuperhydrophobicityHigh corrosion resistance |
| spellingShingle | Xinyu Pan Xiaohu Luo Ji Li Xiaoping Zhang Xihong Yu Chengliang Zhou Bo Chen Yali Liu Superhydrophobicity and high corrosion resistance of secondary alkane sulphonate (SAS) modified Li-Al LDH film in-situ grown on aluminum alloy Corrosion Communications LDH SAS Superhydrophobicity High corrosion resistance |
| title | Superhydrophobicity and high corrosion resistance of secondary alkane sulphonate (SAS) modified Li-Al LDH film in-situ grown on aluminum alloy |
| title_full | Superhydrophobicity and high corrosion resistance of secondary alkane sulphonate (SAS) modified Li-Al LDH film in-situ grown on aluminum alloy |
| title_fullStr | Superhydrophobicity and high corrosion resistance of secondary alkane sulphonate (SAS) modified Li-Al LDH film in-situ grown on aluminum alloy |
| title_full_unstemmed | Superhydrophobicity and high corrosion resistance of secondary alkane sulphonate (SAS) modified Li-Al LDH film in-situ grown on aluminum alloy |
| title_short | Superhydrophobicity and high corrosion resistance of secondary alkane sulphonate (SAS) modified Li-Al LDH film in-situ grown on aluminum alloy |
| title_sort | superhydrophobicity and high corrosion resistance of secondary alkane sulphonate sas modified li al ldh film in situ grown on aluminum alloy |
| topic | LDH SAS Superhydrophobicity High corrosion resistance |
| url | http://www.sciencedirect.com/science/article/pii/S2667266923000014 |
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