The Experts below are selected from a list of 291 Experts worldwide ranked by ideXlab platform
Yantao Li - One of the best experts on this subject based on the ideXlab platform.
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mechanically robust superhydrophobic porous anodized aa5083 for Marine Corrosion protection
Corrosion Science, 2019Co-Authors: Binbin Zhang, Weichen Xu, Yantao LiAbstract:Abstract Given the widely usage and Corrosion tendency of AA5083, it is crucial and highly desired to transform intrinsically hydrophilic AA5083 to be water-repellent superhydrophobicity. In this paper, we constructed porous anodized AA5083 and achieved superhydrophobicity by fluorosilane self-assembly. The surface topography, roughness and chemical compositions were investigated by SEM, AFM and XPS. The Corrosion-resisting behavior was revealed by EIS, demonstrating prominent improvement of Corrosion resistance. In addition, the superhydrophobic AA5083 exhibits ultralow adhesion force, excellent self-cleaning and mechanical stability. We greatly anticipate the construction of superhydrophobic surfaces with mechanical robustness on AA5083 will effectively broaden its promising applications.
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micro nano textured superhydrophobic 5083 aluminum alloy as a barrier against Marine Corrosion and sulfate reducing bacteria adhesion
Journal of The Taiwan Institute of Chemical Engineers, 2019Co-Authors: Binbin Zhang, Yantao Li, Xia Zhao, Fang Guan, Yimeng Zhang, Jizhou DuanAbstract:Abstract Corrosion attack and undesired bio-adhesion are thorny issues threatening and restricting the service performance and security of the widely used structural 5083 aluminum alloys (AA5083) materials in maritime fields. In this paper, we employed a facile ammonia etching approach followed by 1H,1H,2H,2H-Perfluorodecyltriethoxysilane (PFDTES) modification to fabricate micro-nano textured superhydrophobic AA5083 surface as an effective layer for Corrosion inhibition and bio-adhesion suppression. The dual-scale surface morphology and roughness were revealed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) were employed to depict the chemical components of the micro-nano textured AA5083 surface. X-ray photoelectron spectroscopy (XPS) was employed to confirm the presence of functional groups of fluorinated carbon with low surface energy. The self-cleaning ability and Corrosion resistance of the fabricated surfaces were investigated, suggesting an excellent water-proofing and anti-Corrosion performance. Moreover, sulfate-reducing bacteria (SRB) was chosen as a typical bacteria to evaluate and demonstrate the anti-adhesion property of the as-fabricated superhydrophobic AA5083 surface. The present study therefore demonstrates that achieving superhydrophobicity on AA5083 substrate is expected to possess quite potential applications in Marine Corrosion and bio-fouling fields.
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Ultrafast one step construction of non-fluorinated superhydrophobic aluminum surfaces with remarkable improvement of Corrosion resistance and anti-contamination.
Journal of Colloid and Interface Science, 2018Co-Authors: Binbin Zhang, Weichen Xu, Yantao LiAbstract:Abstract The potential Marine Corrosion-resistant and anti-biofouling applications of superhydrophobic materials arouse tremendous attention of researchers and engineers. Herein, we report an ultrafast (∼120 s) and eco-friendly one step electrodeposition strategy to construct fluorine-free superhydrophobic aluminum surface with outstanding water repellency and ultrahigh Corrosion resistance to inhibit Marine Corrosion. As characterized through Field-emission scanning electron microscopy (FE-SEM), Atomic force microscopy (AFM), Energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS), the as-constructed non-fluorinated superhydrophobic surface is composed of manganese palmitate complex featuring with a typical dual-scale hierarchical papillae structures and low surface energy. In addition, the as-fabricated superhydrophobic surfaces possess extremely low surface adhesive force and excellent self-cleaning ability. The results of electrochemical impedance spectra (EIS) tests demonstrate a remarkable augment of charge transfer resistance of the Corrosion process, suggesting a prominent antiCorrosion performance. We believe this rapid, cost-effective and environmental friendly one step approach could find broad prospects in creation and application of metallic superhydrophobic surfaces.
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Biomimetic one step fabrication of manganese stearate superhydrophobic surface as an efficient barrier against Marine Corrosion and Chlorella vulgaris-induced biofouling
Chemical Engineering Journal, 2016Co-Authors: Binbin Zhang, Jiarun Li, Xiuhua Hu, Lihui Yang, Yantao Li, Xia Zhao, Ning Wang, Baorong HouAbstract:Marine Corrosion and biofouling on metallic materials are sticky problems. Herein, we prepared hierarchical structured superhydrophobic (SHPB) surfaces via a versatile one step electrodeposition approach. The synthetic SHPB surface was employed as an efficient barrier against Corrosion and Chlorella vulgaris-induced biofouling. The surface morphology and chemical compositions were analyzed using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectrophotometer (FTIR) and Energy-dispersive spectrum (EDS). Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and immersion test in Chlorella vulgaris-inoculated culture medium were carried out to evaluate the anti-Corrosion and anti-biofouling performance of the obtained SHPB surface. The results demonstrated that the synthetic SHPB surface exhibits great enhanced Corrosion resistance and biofouling mitigation. Moreover, the as-fabricated SHPB surfaces retain superhydrophobicity in wicked environment such as strong acid and alkali conditions, showing good chemical stability. We believe that the SHPB surfaces over metallic substrates provide a potential and worthful strategy for Marine Corrosion and biofouling.
Binbin Zhang - One of the best experts on this subject based on the ideXlab platform.
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mechanically robust superhydrophobic porous anodized aa5083 for Marine Corrosion protection
Corrosion Science, 2019Co-Authors: Binbin Zhang, Weichen Xu, Yantao LiAbstract:Abstract Given the widely usage and Corrosion tendency of AA5083, it is crucial and highly desired to transform intrinsically hydrophilic AA5083 to be water-repellent superhydrophobicity. In this paper, we constructed porous anodized AA5083 and achieved superhydrophobicity by fluorosilane self-assembly. The surface topography, roughness and chemical compositions were investigated by SEM, AFM and XPS. The Corrosion-resisting behavior was revealed by EIS, demonstrating prominent improvement of Corrosion resistance. In addition, the superhydrophobic AA5083 exhibits ultralow adhesion force, excellent self-cleaning and mechanical stability. We greatly anticipate the construction of superhydrophobic surfaces with mechanical robustness on AA5083 will effectively broaden its promising applications.
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micro nano textured superhydrophobic 5083 aluminum alloy as a barrier against Marine Corrosion and sulfate reducing bacteria adhesion
Journal of The Taiwan Institute of Chemical Engineers, 2019Co-Authors: Binbin Zhang, Yantao Li, Xia Zhao, Fang Guan, Yimeng Zhang, Jizhou DuanAbstract:Abstract Corrosion attack and undesired bio-adhesion are thorny issues threatening and restricting the service performance and security of the widely used structural 5083 aluminum alloys (AA5083) materials in maritime fields. In this paper, we employed a facile ammonia etching approach followed by 1H,1H,2H,2H-Perfluorodecyltriethoxysilane (PFDTES) modification to fabricate micro-nano textured superhydrophobic AA5083 surface as an effective layer for Corrosion inhibition and bio-adhesion suppression. The dual-scale surface morphology and roughness were revealed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) were employed to depict the chemical components of the micro-nano textured AA5083 surface. X-ray photoelectron spectroscopy (XPS) was employed to confirm the presence of functional groups of fluorinated carbon with low surface energy. The self-cleaning ability and Corrosion resistance of the fabricated surfaces were investigated, suggesting an excellent water-proofing and anti-Corrosion performance. Moreover, sulfate-reducing bacteria (SRB) was chosen as a typical bacteria to evaluate and demonstrate the anti-adhesion property of the as-fabricated superhydrophobic AA5083 surface. The present study therefore demonstrates that achieving superhydrophobicity on AA5083 substrate is expected to possess quite potential applications in Marine Corrosion and bio-fouling fields.
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Ultrafast one step construction of non-fluorinated superhydrophobic aluminum surfaces with remarkable improvement of Corrosion resistance and anti-contamination.
Journal of Colloid and Interface Science, 2018Co-Authors: Binbin Zhang, Weichen Xu, Yantao LiAbstract:Abstract The potential Marine Corrosion-resistant and anti-biofouling applications of superhydrophobic materials arouse tremendous attention of researchers and engineers. Herein, we report an ultrafast (∼120 s) and eco-friendly one step electrodeposition strategy to construct fluorine-free superhydrophobic aluminum surface with outstanding water repellency and ultrahigh Corrosion resistance to inhibit Marine Corrosion. As characterized through Field-emission scanning electron microscopy (FE-SEM), Atomic force microscopy (AFM), Energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS), the as-constructed non-fluorinated superhydrophobic surface is composed of manganese palmitate complex featuring with a typical dual-scale hierarchical papillae structures and low surface energy. In addition, the as-fabricated superhydrophobic surfaces possess extremely low surface adhesive force and excellent self-cleaning ability. The results of electrochemical impedance spectra (EIS) tests demonstrate a remarkable augment of charge transfer resistance of the Corrosion process, suggesting a prominent antiCorrosion performance. We believe this rapid, cost-effective and environmental friendly one step approach could find broad prospects in creation and application of metallic superhydrophobic surfaces.
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Biomimetic one step fabrication of manganese stearate superhydrophobic surface as an efficient barrier against Marine Corrosion and Chlorella vulgaris-induced biofouling
Chemical Engineering Journal, 2016Co-Authors: Binbin Zhang, Jiarun Li, Xiuhua Hu, Lihui Yang, Yantao Li, Xia Zhao, Ning Wang, Baorong HouAbstract:Marine Corrosion and biofouling on metallic materials are sticky problems. Herein, we prepared hierarchical structured superhydrophobic (SHPB) surfaces via a versatile one step electrodeposition approach. The synthetic SHPB surface was employed as an efficient barrier against Corrosion and Chlorella vulgaris-induced biofouling. The surface morphology and chemical compositions were analyzed using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectrophotometer (FTIR) and Energy-dispersive spectrum (EDS). Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and immersion test in Chlorella vulgaris-inoculated culture medium were carried out to evaluate the anti-Corrosion and anti-biofouling performance of the obtained SHPB surface. The results demonstrated that the synthetic SHPB surface exhibits great enhanced Corrosion resistance and biofouling mitigation. Moreover, the as-fabricated SHPB surfaces retain superhydrophobicity in wicked environment such as strong acid and alkali conditions, showing good chemical stability. We believe that the SHPB surfaces over metallic substrates provide a potential and worthful strategy for Marine Corrosion and biofouling.
Robert E. Melchers - One of the best experts on this subject based on the ideXlab platform.
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Long term Marine Corrosion of cast iron bridge piers
Corrosion Engineering Science and Technology, 2016Co-Authors: Robert E. Melchers, C. Herron, R. EmslieAbstract:Cast iron piers of a disused 90 year old multispan railway bridge located close to the Pacific Ocean were extensively sampled for remaining wall thickness to determine Corrosion loss and pit depth. From this, a Corrosion loss model for the full 90 years was developed. In addition, the statistics for uncertainty in Corrosion loss were obtained. Corrosion varied with elevation relative to mean water level and was negligible in the atmospheric zone, about 2–3 mm in the immersion zone and 5–6 mm in the splash and lower tidal zones. This variation is consistent with accelerated low water Corrosion. It indicates that water pollution occurred sometime during the life of the bridge. Maximum pit depths were determined and analysed using extreme value statistics. The Corrosion model for such long term exposure and the related statistical results are unique and important for assessment of remaining life of the many other cast iron structures still in existence in many parts of the world.
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Principles of Marine Corrosion
Springer Handbook of Ocean Engineering, 2016Co-Authors: Robert E. MelchersAbstract:Seawater is an aggressive environment for materials particularly in warmer and polluted waters. In this environment, steel infrastructure, such as offshore platforms, pipelines, and tanks may corrode quickly, and for engineering and management purposes, the rate at which this occurs is of interest. Here, recently developed understanding of the Corrosion processes over extended exposure periods is reviewed and recently developed science-based mathematical models for the prediction of Corrosion and pitting of structural steels are described. The effect of various influencing factors is reviewed, including that of seawater quality and the effect of microorganisms on Corrosion. Also, short discussions of the Corrosion of stainless steels, aluminum, and copper-nickels, all materials that are used under Marine exposure conditions, are given. This is followed by a description of recent observations of the Corrosion of steel reinforcing bars in reinforced concrete, another widely used construction material in Marine environments. It shows that reinforced concrete can be a highly successful construction material, even in long term and under Marine conditions, but that severe loss of reinforcement may occur without obvious external signs detectable by visual inspection.
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Technical Note: Rust Removal from Steel Coupons After Short-Term Marine Immersion
Corrosion, 2015Co-Authors: Igor A. Chaves, R. Jeffrey, Robert E. MelchersAbstract:The quantification of mass loss, surface topography, depth of pitting, and localized Corrosion for steels subject to Marine Corrosion requires the removal of rusts, preferably without causing addit...
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Bacteria have transient influences on Marine Corrosion of steel
Nature Precedings, 2011Co-Authors: Robert E. Melchers, Robert JeffreyAbstract:The contribution of bacteria to the Corrosion mass loss and to pitting of mild steel was observed over 2.5 years using parallel streams of unpolluted natural (biotic) and nominally sterilized (abiotic) Pacific Ocean coastal seawater. As also observed by others, in artificial laboratory exposures, Corrosion mass loss within the first few days of exposure was much greater in the biotic stream. However, after only about 10 days the difference in mass losses were gradually reduced and were very similar up to about one year of exposure. Thereafter, the Corrosion loss in the biotic stream again became more severe. Pitting Corrosion in the biotic stream was more severe from the very first exposure throughout the 2.5 years. Corrosion in both seawater streams exhibited three distinct but transient time-dependent phases. Of these only the first and third obviously involve bacteria. Similar longer-term observations in real seawaters have not been described previously but are generally consistent with some long-term field data. The results show that longer-term Corrosion behavior and possible microbial influences cannot be predicted from short-term laboratory observations, even if natural seawater is used.
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Long-term Corrosion of steels exposed to Marine environments
European Journal of Environmental and Civil Engineering, 2009Co-Authors: Robert E. MelchersAbstract:This paper presents an overview of the principal features of the recently developed model for the short and the long-term Marine Corrosion of steels. In Marine environments such as immersion, tidal...
Baorong Hou - One of the best experts on this subject based on the ideXlab platform.
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Biomimetic one step fabrication of manganese stearate superhydrophobic surface as an efficient barrier against Marine Corrosion and Chlorella vulgaris-induced biofouling
Chemical Engineering Journal, 2016Co-Authors: Binbin Zhang, Jiarun Li, Xiuhua Hu, Lihui Yang, Yantao Li, Xia Zhao, Ning Wang, Baorong HouAbstract:Marine Corrosion and biofouling on metallic materials are sticky problems. Herein, we prepared hierarchical structured superhydrophobic (SHPB) surfaces via a versatile one step electrodeposition approach. The synthetic SHPB surface was employed as an efficient barrier against Corrosion and Chlorella vulgaris-induced biofouling. The surface morphology and chemical compositions were analyzed using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectrophotometer (FTIR) and Energy-dispersive spectrum (EDS). Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and immersion test in Chlorella vulgaris-inoculated culture medium were carried out to evaluate the anti-Corrosion and anti-biofouling performance of the obtained SHPB surface. The results demonstrated that the synthetic SHPB surface exhibits great enhanced Corrosion resistance and biofouling mitigation. Moreover, the as-fabricated SHPB surfaces retain superhydrophobicity in wicked environment such as strong acid and alkali conditions, showing good chemical stability. We believe that the SHPB surfaces over metallic substrates provide a potential and worthful strategy for Marine Corrosion and biofouling.
Xia Zhao - One of the best experts on this subject based on the ideXlab platform.
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micro nano textured superhydrophobic 5083 aluminum alloy as a barrier against Marine Corrosion and sulfate reducing bacteria adhesion
Journal of The Taiwan Institute of Chemical Engineers, 2019Co-Authors: Binbin Zhang, Yantao Li, Xia Zhao, Fang Guan, Yimeng Zhang, Jizhou DuanAbstract:Abstract Corrosion attack and undesired bio-adhesion are thorny issues threatening and restricting the service performance and security of the widely used structural 5083 aluminum alloys (AA5083) materials in maritime fields. In this paper, we employed a facile ammonia etching approach followed by 1H,1H,2H,2H-Perfluorodecyltriethoxysilane (PFDTES) modification to fabricate micro-nano textured superhydrophobic AA5083 surface as an effective layer for Corrosion inhibition and bio-adhesion suppression. The dual-scale surface morphology and roughness were revealed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) were employed to depict the chemical components of the micro-nano textured AA5083 surface. X-ray photoelectron spectroscopy (XPS) was employed to confirm the presence of functional groups of fluorinated carbon with low surface energy. The self-cleaning ability and Corrosion resistance of the fabricated surfaces were investigated, suggesting an excellent water-proofing and anti-Corrosion performance. Moreover, sulfate-reducing bacteria (SRB) was chosen as a typical bacteria to evaluate and demonstrate the anti-adhesion property of the as-fabricated superhydrophobic AA5083 surface. The present study therefore demonstrates that achieving superhydrophobicity on AA5083 substrate is expected to possess quite potential applications in Marine Corrosion and bio-fouling fields.
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Biomimetic one step fabrication of manganese stearate superhydrophobic surface as an efficient barrier against Marine Corrosion and Chlorella vulgaris-induced biofouling
Chemical Engineering Journal, 2016Co-Authors: Binbin Zhang, Jiarun Li, Xiuhua Hu, Lihui Yang, Yantao Li, Xia Zhao, Ning Wang, Baorong HouAbstract:Marine Corrosion and biofouling on metallic materials are sticky problems. Herein, we prepared hierarchical structured superhydrophobic (SHPB) surfaces via a versatile one step electrodeposition approach. The synthetic SHPB surface was employed as an efficient barrier against Corrosion and Chlorella vulgaris-induced biofouling. The surface morphology and chemical compositions were analyzed using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectrophotometer (FTIR) and Energy-dispersive spectrum (EDS). Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and immersion test in Chlorella vulgaris-inoculated culture medium were carried out to evaluate the anti-Corrosion and anti-biofouling performance of the obtained SHPB surface. The results demonstrated that the synthetic SHPB surface exhibits great enhanced Corrosion resistance and biofouling mitigation. Moreover, the as-fabricated SHPB surfaces retain superhydrophobicity in wicked environment such as strong acid and alkali conditions, showing good chemical stability. We believe that the SHPB surfaces over metallic substrates provide a potential and worthful strategy for Marine Corrosion and biofouling.