Development and evaluation of superhydrophobic carbon nanotube coatings onmaraging steel: Corrosion protection, and anti-fouling characteristics
This study presents a novel and environmentally sustainable method for synthesizing high-quality carbon nanotubes (CNTs) from orange peel biomass for enhanced corrosion protection of maraging steel in marine environments. Using a one-step, catalyst-free chemical vapor deposition (CVD) process at a r...
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Elsevier
2025-06-01
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| Series: | Journal of Alloys and Metallurgical Systems |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949917825000380 |
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| author | F.abdel Mouez H. Halfa Ahmed Yahia H.M. Hussien Mohab Gaber Heba H. Ali |
| author_facet | F.abdel Mouez H. Halfa Ahmed Yahia H.M. Hussien Mohab Gaber Heba H. Ali |
| author_sort | F.abdel Mouez |
| collection | DOAJ |
| description | This study presents a novel and environmentally sustainable method for synthesizing high-quality carbon nanotubes (CNTs) from orange peel biomass for enhanced corrosion protection of maraging steel in marine environments. Using a one-step, catalyst-free chemical vapor deposition (CVD) process at a relatively low temperature of 600 °C, a dense and vertically aligned CNT coating was successfully deposited on the steel surface. Raman spectroscopy confirmed the structural integrity and high graphitization of the CNTs, while scanning electron microscopy revealed their uniform nanoscale architecture. Wettability analysis showed a significant transformation from the hydrophilic nature of untreated steel (water contact angle ∼50°) to a superhydrophobic state (contact angle ∼130°) after CNT deposition. Atomic force microscopy indicated a substantial increase in surface roughness, contributing to the superhydrophobic behavior. Electrochemical tests, including potentiodynamic polarization and electrochemical impedance spectroscopy (EIS), demonstrated that the CNT-coated surface exhibited a corrosion current density three times lower and corrosion resistance five times higher than bare steel. Additionally, the impedance response increased by three orders of magnitude, confirming the coating’s effectiveness in mitigating electrochemical degradation. Long-term immersion testing in seawater containing fouling microorganisms further validated the antifouling capabilities of the CNT coating, with no visible biofouling observed after three months. These results highlight the potential of bio-derived CNT coatings as multifunctional, eco-friendly solutions for marine corrosion protection. |
| format | Article |
| id | doaj-art-cd09f87c6c7a4ca4bdf7c8e6c85d8506 |
| institution | DOAJ |
| issn | 2949-9178 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Alloys and Metallurgical Systems |
| spelling | doaj-art-cd09f87c6c7a4ca4bdf7c8e6c85d85062025-08-20T03:20:01ZengElsevierJournal of Alloys and Metallurgical Systems2949-91782025-06-011010018810.1016/j.jalmes.2025.100188Development and evaluation of superhydrophobic carbon nanotube coatings onmaraging steel: Corrosion protection, and anti-fouling characteristicsF.abdel Mouez0H. Halfa1Ahmed Yahia2H.M. Hussien3Mohab Gaber4Heba H. Ali5Corrosion Control and Surface Protection Department, CMRDI, Cairo, Egypt; Corresponding author.Steel Technology and Ferroalloys Department, CMRDI, Cairo, EgyptDepartment of Mineral Beneficiation and Agglomeration, Central Metallurgical R&D Institute, P.O. Box 87, Helwan, Cairo, EgyptCorrosion Control and Surface Protection Department, CMRDI, Cairo, Egypt; Department of Mineral Beneficiation and Agglomeration, Central Metallurgical R&D Institute, P.O. Box 87, Helwan, Cairo, EgyptEgyptian Navy R &D Department, EgyptMinerals Technology Institute, Pyrometallurgy Department Central Metallurgical Research Development Institute (CMRDI), EgyptThis study presents a novel and environmentally sustainable method for synthesizing high-quality carbon nanotubes (CNTs) from orange peel biomass for enhanced corrosion protection of maraging steel in marine environments. Using a one-step, catalyst-free chemical vapor deposition (CVD) process at a relatively low temperature of 600 °C, a dense and vertically aligned CNT coating was successfully deposited on the steel surface. Raman spectroscopy confirmed the structural integrity and high graphitization of the CNTs, while scanning electron microscopy revealed their uniform nanoscale architecture. Wettability analysis showed a significant transformation from the hydrophilic nature of untreated steel (water contact angle ∼50°) to a superhydrophobic state (contact angle ∼130°) after CNT deposition. Atomic force microscopy indicated a substantial increase in surface roughness, contributing to the superhydrophobic behavior. Electrochemical tests, including potentiodynamic polarization and electrochemical impedance spectroscopy (EIS), demonstrated that the CNT-coated surface exhibited a corrosion current density three times lower and corrosion resistance five times higher than bare steel. Additionally, the impedance response increased by three orders of magnitude, confirming the coating’s effectiveness in mitigating electrochemical degradation. Long-term immersion testing in seawater containing fouling microorganisms further validated the antifouling capabilities of the CNT coating, with no visible biofouling observed after three months. These results highlight the potential of bio-derived CNT coatings as multifunctional, eco-friendly solutions for marine corrosion protection.http://www.sciencedirect.com/science/article/pii/S2949917825000380Carbon nanotubes (CNTs)Superhydrophobic coatingMarine corrosion protectionAntifouling |
| spellingShingle | F.abdel Mouez H. Halfa Ahmed Yahia H.M. Hussien Mohab Gaber Heba H. Ali Development and evaluation of superhydrophobic carbon nanotube coatings onmaraging steel: Corrosion protection, and anti-fouling characteristics Journal of Alloys and Metallurgical Systems Carbon nanotubes (CNTs) Superhydrophobic coating Marine corrosion protection Antifouling |
| title | Development and evaluation of superhydrophobic carbon nanotube coatings onmaraging steel: Corrosion protection, and anti-fouling characteristics |
| title_full | Development and evaluation of superhydrophobic carbon nanotube coatings onmaraging steel: Corrosion protection, and anti-fouling characteristics |
| title_fullStr | Development and evaluation of superhydrophobic carbon nanotube coatings onmaraging steel: Corrosion protection, and anti-fouling characteristics |
| title_full_unstemmed | Development and evaluation of superhydrophobic carbon nanotube coatings onmaraging steel: Corrosion protection, and anti-fouling characteristics |
| title_short | Development and evaluation of superhydrophobic carbon nanotube coatings onmaraging steel: Corrosion protection, and anti-fouling characteristics |
| title_sort | development and evaluation of superhydrophobic carbon nanotube coatings onmaraging steel corrosion protection and anti fouling characteristics |
| topic | Carbon nanotubes (CNTs) Superhydrophobic coating Marine corrosion protection Antifouling |
| url | http://www.sciencedirect.com/science/article/pii/S2949917825000380 |
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