Validating the early corrosion sensing functionality in poly (ether imide) coatings for enhanced protection of magnesium alloy AZ31

Mata, D.; Scharnagl, Nico; Lamaka, Sviatlana V.; Malheiro, Eliana; Maia, Frederico; Zheludkevich, Mikhail L.

doi:10.1016/j.corsci.2018.05.034

Cited by 39 publications

(11 citation statements)

References 36 publications

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“…For SMP-based coatings, the self-healing effect can be initiated by artificial heating or the heat generated by (sun)light irradiation . This thermally initiated self-healing process may also be facilitated by a complementary corrosion sensing component in the coating, which can locate the coating damage, enabling a more timely and efficient repair. , …”

Section: Introductionmentioning

confidence: 99%

“…38 This thermally initiated self-healing process may also be facilitated by a complementary corrosion sensing component in the coating, which can locate the coating damage, enabling a more timely and efficient repair. 42,43 To further enhance the healing efficiency, a dual-action "close-then-heal" strategy was demonstrated by incorporating thermoplastic fillers in SMPs. 44 For example, Mather et al infused an epoxy SMP into an electrospun PCL fiber scaffold applied on a steel substrate.…”

Section: Introductionmentioning

confidence: 99%

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Triple-Action Self-Healing Protective Coatings Based on Shape Memory Polymers Containing Dual-Function Microspheres

Huang

Deng

et al. 2018

ACS Appl. Mater. Interfaces

169

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In this study, a new self-healing shape memory polymer (SMP) coating was prepared to protect the aluminum alloy 2024-T3 from corrosion by the incorporation of dual-function microspheres containing polycaprolactone and the corrosion inhibitor 8-hydroxyquinoline (8HQ). The self-healing properties of the coatings were investigated via scanning electron microscopy, electrochemical impedance spectroscopy, and scanning electrochemical microscopy following the application of different healing conditions. The results demonstrated that the coating possessed a triple-action self-healing ability enabled by the cooperation of the 8HQ inhibitor, the SMP coating matrix, and the melted microspheres. The coating released 8HQ in a pH-dependent fashion and immediately suppressed corrosion within the coating scratch. After heat treatment, the scratched coating exhibited excellent recovery of its anticorrosion performance, which was attributed to the simultaneous initiation of scratch closure by the shape memory effect of the coating matrix, sealing of the scratch by the melted microspheres, and the synergistic effect of corrosion inhibition by 8HQ.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Triple-Action Self-Healing Protective Coatings Based on Shape Memory Polymers Containing Dual-Function Microspheres

Huang

Deng

et al. 2018

ACS Appl. Mater. Interfaces

169

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“…Phenolphthalein (PhPh) was loaded into silica nanocontainers (SiNC) to form efficient pH sensors for early corrosion detection of polymer matrix on AZ31 [184]. The color of PhPh changes to pink upon local corrosion that is observable by visual inspection.…”

Section: Corrosion Sensorsmentioning

confidence: 99%

Corrosion Barrier Coatings: Progress and Perspectives of the Chemical Route

Κορδάς

2022

CMD

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Improved corrosion barrier coatings (CBCs) to protect metals will allow future metal structures to operate for extended periods, ensuring improved safety by reducing environmental pollution and maintenance costs. Many production methods and design of corrosion barrier coatings (CBCs) have been developed. This review focuses only on CBCs made with chemistry techniques. These CBCs can be passive and active with remarkable performance. Today, most of the work focuses on the discovery and application of “smart nanomaterials,” which, if incorporated into “passive CBCs,” will turn them into “active CBCs,” giving them the phenomenon of “self-healing” that extends their service life. Today, many efforts are focused on developing sensors to diagnose corrosion at an early stage and CBCs that self-diagnose the environment and respond on demand. In addition, recent technological developments are reviewed, and a comprehensive strategy is proposed for the faster development of new CBC materials.

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“…Typically, the corrosion reaction is accompanied by the generation of metallic ions and variation of local pH values. Therefore, the local corrosion can be sensed and reported by applying metallic ion responders − and pH-sensors in polymer coatings, − which can provide the instant feedback on corrosion conditions and contribute to the prediction of corrosion development.…”

Section: Introductionmentioning

confidence: 99%

Stimulus Responsive Zeolitic Imidazolate Framework to Achieve Corrosion Sensing and Active Protecting in Polymeric Coatings

Liu

Qian

Hou

et al. 2021

ACS Appl. Mater. Interfaces

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Metal substrates beneath polymeric coatings are susceptible to localized corrosion, which could result in lifetime reduction and catastrophic failure without timely repair treatment. In situ detection of corrosion and repair coating defects are in high demand yet challenging to fulfill so far. Herein, we report a smart polymeric coating by integrating nanosensors into the coating matrix, which is capable of efficient corrosion sensing and active anticorrosion protecting. The nanosensors were constructed by zeolitic imidazolate framework encapsulated with the polyethylene glycol-tannic acid complex. The morphology, chemical constitution, and stimulus responsiveness of nanosensors were systematically analyzed. The generation of local corrosion beneath coating can be promptly sensed and reported by a conspicuous purple color derived from tannic-iron ion coordinates. Meanwhile, local electrochemical impedance spectroscopy results proved that the metal degradation process at the defected interface can be largely inhibited, exhibiting active anticorrosion property. Furthermore, the constructed smart coating possessed superior impermeability and long-term protective performance under simulated seawater and harsh salts spray conditions. This feasible and effective strategy based on simple nanosensors to engineer smart coatings paves a new way to develop high environmental adaptability protective materials with protecting, corrosion sensing, and self-healing functions.

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Validating the early corrosion sensing functionality in poly (ether imide) coatings for enhanced protection of magnesium alloy AZ31

Cited by 39 publications

References 36 publications

Triple-Action Self-Healing Protective Coatings Based on Shape Memory Polymers Containing Dual-Function Microspheres

Triple-Action Self-Healing Protective Coatings Based on Shape Memory Polymers Containing Dual-Function Microspheres

Corrosion Barrier Coatings: Progress and Perspectives of the Chemical Route

Stimulus Responsive Zeolitic Imidazolate Framework to Achieve Corrosion Sensing and Active Protecting in Polymeric Coatings

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