Corrosion resistance and wetting properties of silica-based superhydrophobic coatings on AZ31B Mg alloy surfaces

Qian, Zhiqiang; Wang, Shidong; Ye, Xiushen; Liu, Zhong; Wu, Zhijian

doi:10.1016/j.apsusc.2018.05.086

Cited by 79 publications

(41 citation statements)

References 76 publications

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“…Beside peaks coming from the glass substrate, the most intense peak observed at 1060-1080 cm -1 (indicating with an arrow) can be ascribed to the asymmetric stretching of Si−O−Si bonds [21,29]. The presence of this distinct absorption peak verifies the SiO2 formation over the glass surface for both A-SiO2 and B-SiO2 coatings and its network structure, as also indicated by Qian et al [21] and Ganbavle et al [30]. Fig.…”

Section: Effect Of Catalyst Typesupporting

confidence: 61%

“…3 with the symbols showing the peak locations. Uncoated glass substrate (soda lime silica glass) shows two peaks at ~780-790 cm -1 and ~900 cm -1 , indicating the symmetric stretching of Si−O−Si bonds and stretching vibrations of Si−OH bonds, respectively [21,29]. Beside peaks coming from the glass substrate, the most intense peak observed at 1060-1080 cm -1 (indicating with an arrow) can be ascribed to the asymmetric stretching of Si−O−Si bonds [21,29].…”

Section: Effect Of Catalyst Typementioning

confidence: 99%

“…Uncoated glass substrate (soda lime silica glass) shows two peaks at ~780-790 cm -1 and ~900 cm -1 , indicating the symmetric stretching of Si−O−Si bonds and stretching vibrations of Si−OH bonds, respectively [21,29]. Beside peaks coming from the glass substrate, the most intense peak observed at 1060-1080 cm -1 (indicating with an arrow) can be ascribed to the asymmetric stretching of Si−O−Si bonds [21,29]. The presence of this distinct absorption peak verifies the SiO2 formation over the glass surface for both A-SiO2 and B-SiO2 coatings and its network structure, as also indicated by Qian et al [21] and Ganbavle et al [30].…”

Section: Effect Of Catalyst Typementioning

confidence: 99%

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Preparation of single- and double-layer antireflective coatings by sol-gel method

İkizler¹

2019

Res. Eng. Struct. Mater.

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Section: Effect Of Catalyst Typesupporting

confidence: 61%

Section: Effect Of Catalyst Typementioning

confidence: 99%

Section: Effect Of Catalyst Typementioning

confidence: 99%

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Preparation of single- and double-layer antireflective coatings by sol-gel method

İkizler¹

2019

Res. Eng. Struct. Mater.

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“…The sample maintained high contact angle (about 160.8 • ) after 7 days immersing in 3.5 wt % NaCl aqueous solution. The work reported by Qian et al showed solution pH and salt aqueous including NaCl, MgCl 2 , NaI, and CH 3 COONa, have limited influence on the wetting properties of silica-based super-hydrophobic coating on AZ31B Mg Alloy [102]. Particularly, the organics like C 2 H 5 OH, C 17 H 33 COONa, and sodium dodecylbenzene sulfonate had obvious detrimental effects on the wetting properties.…”

Section: Chemical Stabilitymentioning

confidence: 99%

“…These surface modification agents might be degraded in harsh condition, which may cause increase of surface energy and decrease of super-hydrophobicity [87]. Thus, chemical stability of coating should be investigated in acid and base (or aqueous with various pH value), even aqua regia [87,[98][99][100][101], salt aqueous [100][101][102][103], and organic solvent [85,87]. Besides, UV irradiation [86,104] and temperature variation [87,105] also should be taken into consideration which might cause degradation of surface chemicals.…”

Section: Chemical Stabilitymentioning

confidence: 99%

Robust Super-Hydrophobic Coating Prepared by Electrochemical Surface Engineering for Corrosion Protection

Zhao

et al. 2019

Coatings

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Corrosion—reactions occuring between engineering materials and their environment—can cause material failure and catastrophic accidents, which have a serious impact on economic development and social stability. Recently, super-hydrophobic coatings have received much attention due to their effectiveness in preventing engineering materials from further corrosion. In this paper, basic principles of wetting properties and corrosion protection mechanism of super-hydrophobic coatings are introduced firstly. Secondly, the fabrication methods by electrochemical surface engineering—including electrochemical anodization, micro-arc oxidation, electrochemical etching, and deposition—are presented. Finally, the stabilities and future directions of super-hydrophobic coatings are discussed in order to promote the movement of such coatings into real-world applications. The objective of this review is to bring a brief overview of the recent progress in the fabrication of super-hydrophobic coatings by electrochemical surface methods for corrosion protection of engineering materials.

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Enhanced corrosion resistance and reduced cytotoxicity of the AZ91 Mg alloy by plasma nitriding and a hierarchical structure composed of ciprofloxacin‐loaded polymeric multilayers and calcium phosphate coating

Shanaghi

Mehrjou

Chu

2021

J Biomedical Materials Res

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Much effort has made to lessen the cytotoxicity and enhance the corrosion resistance of biodegradable magnesium alloys, for example, by depositing multilayered polymeric coatings containing hydroxyapatite. In this work, a hierarchical structure composed of ciprofloxacin (Cip)‐loaded on polyacrylic acid (PAA) and poly (ethyleneimine) (PEI) as biocompatible polymeric multilayers and calcium phosphate coating as the top layer is formed by the sol–gel method on the AZ91 Mg alloy with an intermediate layer formed by nitrogen plasma immersion ion implantation. The thicknesses of the multilayered coating and nitrided layer (Mg3N2) are 10 μm and 140 nm, respectively. The corrosion current density decreases by 95.6% and the corrosion potential in the polarization curve shifts to the positive direction by 23%. The passivation process which occurs at defects by deposition of corrosion products mitigates both galvanic and localized corrosion. Slight increase in the contact angle and surface free energy, enhanced corrosion resistance, and reduced cytotoxicity are observed from the multilayered structure. The better corrosion resistance enables better control of release of Cip. Biological assessment indicates that the antibacterial activity against Escherichia coli is improved by 100% after culturing for 24 hr and the cell viability and noncytotoxic behavior of the coated AZ91 are enhanced as well. The corrosion behavior and biological results suggest that the strategy of using a hierarchical structure composed of Cip‐loaded polymeric multilayers in conjunction with an intermediate plasma nitrided layer has large potential in the development of biodegradable orthopedic implants made of Mg alloys.

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Corrosion resistance and wetting properties of silica-based superhydrophobic coatings on AZ31B Mg alloy surfaces

Cited by 79 publications

References 76 publications

Preparation of single- and double-layer antireflective coatings by sol-gel method

Preparation of single- and double-layer antireflective coatings by sol-gel method

Robust Super-Hydrophobic Coating Prepared by Electrochemical Surface Engineering for Corrosion Protection

Enhanced corrosion resistance and reduced cytotoxicity of the AZ91 Mg alloy by plasma nitriding and a hierarchical structure composed of ciprofloxacin‐loaded polymeric multilayers and calcium phosphate coating

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