Improved Interfacial Interactions of Dip Coatings by In Situ Introducing Silica to Enhance Corrosion Resistance and Metal Bonding Strength

Wei, Tong; An, Kai; Zhang, Jiasheng; Du, Ning; Ma, Chen; Xiong, Dangsheng

doi:10.1021/acs.langmuir.2c02510

Cited by 5 publications

(5 citation statements)

References 62 publications

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“…Irrespective of the trend observed in the bare-Zn coating, the largest diameter for the Nyquist curve is obtained for the composite coating immersed in seawater consortium, and the semicircle diameter for B. subtilis is also increased as compared to that in E. coli . This clearly confirms the change in the antibiocorrosion characteristic of the coating after the integration of composite particles into the Zn matrix. , …”

Section: Resultssupporting

confidence: 78%

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Multifunctional rGO–ZnO Composite Coatings with Enhanced Mechanical, Anticorrosion, and Antibacterial Characteristics for Practical Applications

Geethanjali,

Elias,

Bijimol

et al. 2023

ACS Appl. Eng. Mater.

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This paper reports the development of multifunctional rGO–ZnO composite (RGZ) coatings with enhanced mechanical, anticorrosion, and antibacterial characteristics for practical marine applications. The structure and composition of the RGZ composite coatings are tuned to achieve distinct and compact intermetallic alloy layers, leading to improved hardness, wear resistance, friction resistance, electrochemical stability, and antibacterial activity. 0.3 wt %-RGZ composite coating with the highest R ct value (367.8 Ω cm2) exhibits the least corrosion rate (0.75 mmpy) as compared to the other compositions of the developed coatings. All the RGZ composite coatings exhibit enhanced antibacterial activity in different bacterial suspensions selected for the present study (Escherichia coli, Bacillus subtilis, and seawater consortium), and the 0.3 wt %-RGZ composite coating is demonstrated to be suitable for marine applications with the lowest bacterial survivability (20.3%) in the seawater consortium. The electrochemical stability and anticorrosion performance of the 0.3 wt %-RGZ composite coating even after long-term exposure (28 days) to seawater consortium confirmed from the largest R ct value (1154.7 Ω cm2) and the least i corr value (223.4 μA/cm2) indicate its suitability for practical application with excellent reusability. The enhanced antibacterial activity of the 0.3 wt %-RGZ composite coating as compared to other compositions of RGZ coatings and bare-Zn coating is attributed to its three-level bacterial destruction capability by inducing damage to the bacterial cell wall through physical damage, penetration of Zn2+ ions, and the activity of the photogenerated reactive oxygen species (ROS). The enhanced antibacterial activity and excellent electrochemical stability with attractive anticorrosion performance of 0.3 wt %-RGZ composite coating even after long-term exposure (28 days) in different bacterial suspensions, especially in seawater consortium, confirm its suitability for practical applications.

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Section: Resultssupporting

confidence: 78%

“…This clearly confirms the change in the antibiocorrosion characteristic of the coating after the integration of composite particles into the Zn matrix. 71,72 3.6.3. Potentiodynamic Polarization.…”

Section: Assessment Of the Electrochemical Stability Of The Rgz Coati...mentioning

confidence: 99%

Multifunctional rGO–ZnO Composite Coatings with Enhanced Mechanical, Anticorrosion, and Antibacterial Characteristics for Practical Applications

Geethanjali,

Elias,

Bijimol

et al. 2023

ACS Appl. Eng. Mater.

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“…8 For instance, in a recent study, Tong et al introduced a distinctive method involving the incorporation of nanoparticles into epoxy resin through hydrogen-bonding adsorption of hydrophilic silica. 9 This innovative approach aimed to enhance the effectiveness of anticorrosive coatings on an aluminum alloy. Feng et al synthesized a photothermal cyclic self-healing coating by combining polyurethane elastomers with a hydrogen bond and a dimethyl glyoximeurethane (DOU) coordination complex with in situ dualfunctional BiOI@Bi 2 S. 10 In another work, Zhou et al developed an epoxy coating with enhanced wear and corrosion resistance.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The different protective coating methods or techniques that are being used to prevent corrosion include (i) sol–gel coating, (ii) polymer coating, (iii) galvanization techniques, and micro-arc oxidation method . For instance, in a recent study, Tong et al introduced a distinctive method involving the incorporation of nanoparticles into epoxy resin through hydrogen-bonding adsorption of hydrophilic silica . This innovative approach aimed to enhance the effectiveness of anticorrosive coatings on an aluminum alloy.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of Thymol Blue and Phenolphthalein in Sol–Gel Coatings for Sensing and Inhibiting Corrosion on Mild Steel

Patra,

Santhosh,

Kauveri

et al. 2024

Langmuir

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Development of smart coatings incorporated with corrosion indicators that can warn of corrosion through signaling the alteration of pH or metal-ion concentration at the corrosion site, and simultaneously mitigate further corrosion, stands out as a highly efficient and economical approach to address corrosion issues. In this context, the present work provides a comprehensive comparison on the effectiveness of thymol blue (TB) and phenolphthalein (PhPh) in both sensing and inhibiting corrosion on mild steel. While most of the works primarily focused on independently investigating the corrosion indication behavior of different active agents, our study intends to offer valuable insights through the comparative analysis of TB and PhPh in making well-informed decisions when selecting the most effective indicator for a given set of application scenarios. Initially, TB and PhPh were dissolved in a 3.5% NaCl solution, and their ability to indicate and inhibit corrosion on mild steel was verified through a drop test and an electrochemical study, respectively. An electrochemical study and a salt spray test were carried out to evaluate the corrosion sensing and inhibiting capabilities of the coating produced on a mild steel substrate by integrating TB and PhPh in the sol−gel matrix. The synergistic effect of TB and PhPh in sensing and inhibiting corrosion was also studied by combining TB and PhPh in the sol−gel matrix. It was found that TB-based coatings showed approximately 8 times better inhibiting performance (in terms of charge transfer resistance) when compared to PhPh-based coatings, while the PhPh-based coating was around 16 times more sensitive (with respect to concentration and time) in indicating corrosion when compared to TB-based coatings on a mild steel substrate. Nevertheless, the combination of TB and PhPh in a 1:3 ratio incorporated into the sol−gel coating exhibited increased sensitivity in detecting corrosion and showed improved corrosion inhibition on mild steel.

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“…To optimally utilize the electroactivity of PANI, an integrated film of it that can be durable in destructive environments such as sulfuric acid must be synthesized . PANI is also an electrochromic polymer with different color spectra, which can have various electrochemical properties and environmental stability, so their functional evaluations can be innovative in polymer science. , Various color spectra of PANI can be obtained by doping different mineral and organic agents in its molecular structure . Therefore, the dopant type is very effective in achieving the desired electrochemical properties of the PANI thin film.…”

Section: Introductionmentioning

confidence: 99%

Smart Doped Polyaniline Coating for Wireless Anodic Protection of AISI 304 Stainless Steel in a Corrosive Medium Containing Sulfate and Chloride Ions: Electrochemical and DFT Evaluations

Moradi,

Rezaei,

Marashi

et al. 2024

Langmuir

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Improved Interfacial Interactions of Dip Coatings by In Situ Introducing Silica to Enhance Corrosion Resistance and Metal Bonding Strength

Cited by 5 publications

References 62 publications

Multifunctional rGO–ZnO Composite Coatings with Enhanced Mechanical, Anticorrosion, and Antibacterial Characteristics for Practical Applications

Multifunctional rGO–ZnO Composite Coatings with Enhanced Mechanical, Anticorrosion, and Antibacterial Characteristics for Practical Applications

Effectiveness of Thymol Blue and Phenolphthalein in Sol–Gel Coatings for Sensing and Inhibiting Corrosion on Mild Steel

Smart Doped Polyaniline Coating for Wireless Anodic Protection of AISI 304 Stainless Steel in a Corrosive Medium Containing Sulfate and Chloride Ions: Electrochemical and DFT Evaluations

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