Evaluation of Structure, Heterogeneities, Thickness and Corrosion Protection of Electrodeposited Sol-Gel Superhydrophobic Coatings

Leoni, Gabriel Batalha; Freitas, Denise S. de; Gomes, José Antônio da Cunha Ponciano; Brasil, Simone L. D. C.

doi:10.1590/1980-5373-mr-2021-0460

Cited by 4 publications

(2 citation statements)

References 26 publications

(32 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Higher resistance to corrosive attack and obtained a greater capacity of re-passivation of Au nanocoating thin film is due to the stability , homogeneity, and lower roughness 19 of Au thin film, furthermore to no defects or micro cracks. Coatings create a barrier for surface protection, with the metal surface becoming denser and more protective as the process progresses as confirmed by researchers 21 .…”

Section: Resultsmentioning

confidence: 75%

Structure, Characteristics and Corrosion Behaviour of Gold Nanocoating Thin Film for Biomedical Applications

2022

View full text Add to dashboard Cite

Nanocoatings thin films are layers deposited to improve required properties and corrosion resistance as a major objective for materials that are used for various biomedical applications such as biosensors. In this study, Gold (Au) thin films with 50 nm and 100 nm have been synthesized on Ni-Cr-Mo alloys by magnetron sputtering deposition technique. X-Ray diffraction (XRD), Atomic Force Microscopy (AFM), and Energy-dispersive X-Ray spectroscopy /Scanning Electron Microscopy (EDS/SEM ) have been used to distinguish the surfaces morphology. The results showed that there is no defects or micro-cracks with a uniform and homogenous film. It has spherical nanoparticles diameter morphology with 200-400 nm shaped to fine aggregation. The roughness average (Ra) decreased from 3.91 nm for 50 nm films to 3.70 nm for 100nm films with FCC crystal structure (111) for gold thin films. In vivo, after 50 nm and 100 nm nanocoated thin film by gold, a significant improvement in the localized corrosion resistance has been obtained in artificial saliva corrosive media at 37 °C compared with the uncoated surface.

show abstract

Section: Resultsmentioning

confidence: 75%

Structure, Characteristics and Corrosion Behaviour of Gold Nanocoating Thin Film for Biomedical Applications

2022

View full text Add to dashboard Cite

show abstract

“…Coatings 2022, 12, 737 2 of 14 Superhydrophobic surfaces are mainly achieved by associating micro/nanoscale rough surfaces and low surface energy materials [10,11]. Numerous methods have been used to prepare mild steel-based superhydrophobic surfaces, including spraying [12,13], IR laser [14,15], etching [16][17][18], sol-gel [19][20][21], electrodeposition [22], hot-dip plating [23], plasma sputtering [24], etc. However, considering the practical application requirements for metal protection, some critical issues of superhydrophobic coatings still need to be addressed.…”

Section: Introductionmentioning

confidence: 99%

Facile and Eco-Friendly Preparation of Mild Steel Based Superhydrophobic Surfaces without Chemical Modifications

Jiang

Liu

et al. 2022

Coatings

View full text Add to dashboard Cite

The fabrication of superhydrophobic coatings on mild steel has attracted considerable attention. However, some methods are cumbersome and unsuitable for large-scale preparation, limiting industrial applications. Furthermore, the extensive use of fluorinated compounds to achieve low surface energy is not environmentally friendly. This paper proposed a facile method based on electrodeposition and annealing to prepare mild steel-based superhydrophobic surfaces without chemical modifications. Subsequently, SEM images were analyzed, and it was observed that the plating parameter (current and time) significantly affected surface morphology. At optimum process parameters, a rough surface with a multi-level structure was formed on the plated surface, contributing to superhydrophobic properties. XPS, EDS, and XRD were utilized to analyze surface composition. The results indicated the presence of copper oxides, zinc oxides, and a large number of hydrocarbons on the prepared superhydrophobic surface. These transition metal oxides on the surface adsorbed hydrocarbons in the air during the annealing process, which lowered the surface energy. Combined with the obtained multi-level morphology, a superhydrophobic surface was achieved. Finally, the corrosion behavior was evaluated in 3.5 wt% NaCl solution by AC impedance spectroscopy. Results showed that the obtained superhydrophobic surface, compared with the untreated coating and the steel substrate, showed a substantial improvement in corrosion resistance. A mild steel-based superhydrophobic surface with a contact angle greater than 150 degrees and excellent corrosion resistance was finally obtained. We hope this study will facilitate the industrial preparation of superhydrophobic coatings, especially in marine engineering, since this method does not require complex processes or expensive equipment and does not require fluorinated substances.

show abstract

Electrodeposition of silane/reduced graphene oxide nanocomposite on AA2024-T3 alloy with enhanced corrosion protection, chemical and mechanical stability

Zhang

Liu

Bian

et al. 2022

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Evaluation of Structure, Heterogeneities, Thickness and Corrosion Protection of Electrodeposited Sol-Gel Superhydrophobic Coatings

Cited by 4 publications

References 26 publications

Structure, Characteristics and Corrosion Behaviour of Gold Nanocoating Thin Film for Biomedical Applications

Structure, Characteristics and Corrosion Behaviour of Gold Nanocoating Thin Film for Biomedical Applications

Facile and Eco-Friendly Preparation of Mild Steel Based Superhydrophobic Surfaces without Chemical Modifications

Electrodeposition of silane/reduced graphene oxide nanocomposite on AA2024-T3 alloy with enhanced corrosion protection, chemical and mechanical stability

Contact Info

Product

Resources

About