Evaluation Techniques for the Corrosion Resistance of SelfHealing Coatings

Fayyad, Eman M.; Almaadeed,; Jones, Alan Hywel; Abdullah, Abdulmajeed

doi:10.1016/s1452-3981(23)08147-6

Cited by 61 publications

(6 citation statements)

References 99 publications

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“…It is known that in Bode plots, the higher the impedance value at a low frequency, |Z 0.01 Hz|, for the examined sample, the higher its corrosion protection corresponds to lower corrosion rates. 45,46 As shown in Figure 8a, the |Z 0.01 Hz| value of the as-plated NiP coating is Hz| value is obtained for the as-plated 1.0 wt % ZnO-doped C 3 N 4 nanocomposite coating. However, upon a further increase in the ZnO dopant concentration (2.0 wt %), the | Z 0.01 Hz| value of that coating is significantly decreased, below that of the undoped one.…”

Section: ■ Results and Discussionmentioning

confidence: 85%

ZnO-Doped gC₃N₄Nanocapsules for Enhancing the Performance of Electroless NiP Coating─Mechanical, Corrosion Protection, and Antibacterial Properties

et al. 2023

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A carbon nitride (C3N4) nanomaterial has superior mechanical, thermal, and tribological properties, which make them attractive for various applications, including corrosion-resistant coatings. In this research, newly synthesized C3N4 nanocapsules with different concentrations (0.5, 1.0, and 2.0 wt %) of ZnO as a dopant were incorporated into the NiP coating using an electroless deposition technique. The nanocomposite coatings either ZnO-doped (NiP-C3N4/ZnO) or undoped (NiP-C3N4) were heat-treated at 400 °C for 1 h. The as-plated and heat-treated (HT) nanocomposite coatings were characterized by their morphology, phases, roughness, wettability, hardness, corrosion protection, and antibacterial properties. The results indicated that the microhardness of as-plated and heat-treated nanocomposite coatings was significantly improved after the incorporation of 0.5 wt % ZnO-doped C3N4 nanocapsules. The outcomes of electrochemical studies revealed that the corrosion resistance of the HT coatings is higher than the corresponding as-plated ones. The highest corrosion resistance is achieved on the heat-treated NiP-C3N4/1.0 wt % ZnO coatings. Although the presence of ZnO in the C3N4 nanocapsules increased its surface area and porosity, the C3N4/ZnO nanocapsules prevented localized corrosion by filling the microdefects and pores of the NiP matrix. Furthermore, the colony-counting method used to evaluate the antibacterial behavior of the different coatings demonstrated superior antibacterial properties, namely, after heat treatment. Therefore, the novel perspective C3N4/ZnO nanocapsules can be utilized as a reinforcement nanomaterial in improving the mechanical and anticorrosion performance of NiP coatings in chloride media, together with providing superior antibacterial properties.

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Section: ■ Results and Discussionmentioning

confidence: 85%

ZnO-Doped gC₃N₄Nanocapsules for Enhancing the Performance of Electroless NiP Coating─Mechanical, Corrosion Protection, and Antibacterial Properties

et al. 2023

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“…Self‐healing coatings can be classified into two: intrinsic and extrinsic self‐healing coatings. Intrinsic self‐healing coatings are capable of healing via self‐reactions, while extrinsic self‐healing coatings require the addition of self‐healing components in the coating system for the healing to occur 3 . An example of intrinsic self‐healing coating was investigated by Eidi and Pedram 4 where an epoxy‐based elastomer coating's self‐healing property was carried out through disulfide metathesis reaction and the self‐healing is triggered by the application of heat.…”

Section: Introductionmentioning

confidence: 99%

“…Self‐healing coatings may also be classified as autonomous or non‐autonomous. The autonomous self‐healing coating does not require external stimuli for the coating to heal itself, while the non‐autonomous self‐healing coating is triggered by external action or stimuli such as applied pressure, radiation, heat, or mechanical action to initiate the self‐healing 3 . The use of microcapsules falls under autonomous self‐healing while the mentioned epoxy‐based elastomer coating's self‐healing property through disulfide metathesis reaction is an example of non‐autonomous self‐healing coating since it is thermal induced.…”

Section: Introductionmentioning

confidence: 99%

Self‐healing characteristics of superabsorbent polymers in epoxy coating for corrosion inhibition of carbon steels

Dimasin,

Mena,

Melendres

et al. 2024

J of Applied Polymer Sci

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This study evaluated the self‐healing characteristics of superabsorbent polymers (SAP) in epoxy polyamide paint systems applied using brush application. The SAP underwent preliminary characterization to determine its primary properties and was then incorporated into the epoxy primer at different percentages. The epoxy‐SAP coating systems then underwent various tests to evaluate their self‐healing capability. Excellent adhesion is obtained with the coating system composed of initial epoxy primer, epoxy‐SAP layer, final epoxy primer, and an epoxy enamel topcoat. Electrochemical impedance spectroscopy (EIS) reveals that the addition of SAP increased the charge transfer resistance and pore resistance and decreased the double layer capacitance of the coating system in a span of 5 h, confirming the self‐healing of the coating. Maximum corrosion protection for 5 h is obtained between 15 to 20 wt% SAP. Lastly, it is determined through long‐term immersion tests that the addition of SAP in the coating significantly decreases the rust formation; however, the coating starts to peel off due to the swelling of SAP after 2–3 days.

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“…Many researchers study organic corrosion inhibitors using various manufactured organic compounds with hetero atom oxygen and sulphur atoms in the rings [14][15][16][17] . Adsorption of an organic inhibitor on a metal surface often includes water molecule replacement 18,19 . Organic inhibitors work by adsorbing on the surface of metals, blocking the active site and forming a compact barrier, lowering the corrosion rate 20-24 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Novel Organic Compound as Corrosion Inhibitor in Hydrochloric acid Medium-A Comparative Study

Vimala,

2023

Orient. J. Chem

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A novel organic compound derivativeof Benzothiazole,BFCPA[N- Substitued-1,3-benzo-thiazol-2pheny-2-[4-(furan-2-carbonyl)piperazin-1-phenyl] acetamidehas beensynthesizied and used as inhibitor on mild steelcorrosion in 1N and 2N HCl acidic medium.Using this inhibitor the rate of orrosion and inhibitor efficiency was analysed by mass loss data and electrochemical analysis.Byincreasing concentration of the inhibitor BFCPA exhibits good corrosion inhibition effectiveness less corrosion rate shows the electron donating property.The structure of BFCPA has been confirmed using various spectral studies. Based on adsorption studies it reveals Langmuir adsorption isotherm.

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Evaluation Techniques for the Corrosion Resistance of SelfHealing Coatings

Cited by 61 publications

References 99 publications

ZnO-Doped gC₃N₄Nanocapsules for Enhancing the Performance of Electroless NiP Coating─Mechanical, Corrosion Protection, and Antibacterial Properties

ZnO-Doped gC₃N₄Nanocapsules for Enhancing the Performance of Electroless NiP Coating─Mechanical, Corrosion Protection, and Antibacterial Properties

Self‐healing characteristics of superabsorbent polymers in epoxy coating for corrosion inhibition of carbon steels

Synthesis of Novel Organic Compound as Corrosion Inhibitor in Hydrochloric acid Medium-A Comparative Study

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Evaluation Techniques for the Corrosion Resistance of SelfHealing Coatings

Cited by 61 publications

References 99 publications

ZnO-Doped gC3N4Nanocapsules for Enhancing the Performance of Electroless NiP Coating─Mechanical, Corrosion Protection, and Antibacterial Properties

ZnO-Doped gC3N4Nanocapsules for Enhancing the Performance of Electroless NiP Coating─Mechanical, Corrosion Protection, and Antibacterial Properties

Self‐healing characteristics of superabsorbent polymers in epoxy coating for corrosion inhibition of carbon steels

Synthesis of Novel Organic Compound as Corrosion Inhibitor in Hydrochloric acid Medium-A Comparative Study

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Product

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ZnO-Doped gC₃N₄Nanocapsules for Enhancing the Performance of Electroless NiP Coating─Mechanical, Corrosion Protection, and Antibacterial Properties

ZnO-Doped gC₃N₄Nanocapsules for Enhancing the Performance of Electroless NiP Coating─Mechanical, Corrosion Protection, and Antibacterial Properties