Nanocomposite organic coatings for corrosion protection of metals: A review of recent advances

Nazari, Mehdi Honarvar; Zhang, Yan; Mahmoodi, Ali; Xu, Gang; Jiang, Yu; Wu, Junliang; Shi, Xianming

doi:10.1016/j.porgcoat.2021.106573

Cited by 120 publications

(55 citation statements)

References 219 publications

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“…In this manner, two targets can be achieved with one arrow, including enhancing CNF dispersion and mitigating corrosion reactions by releasing polymer chains from their platforms into scratch sites and defects. Biopolymers are viable candidates among other chemical modifiers utilized to modify surfaces due to their unique features …”

Section: Introductionmentioning

confidence: 99%

“…Biopolymers are viable candidates among other chemical modifiers utilized to modify surfaces due to their unique features. 23 The mussel-inspired polydopamine (PDA) is a biopolymer generated by the oxidation of dopamine (DA) monomers under basic circumstances (pHs > 7.5). The attendance of multiple functional groups such as catechol, amine, and imine in the PDA structure explains its wide range of applications in Li-ion batteries, supercapacitors, anti-microbial applications, and drug delivery systems.…”

Section: Introductionmentioning

confidence: 99%

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pH-Sensitive Polydopamine–La (III) Complex Decorated on Carbon Nanofiber toward On-Demand Release Functioning of Epoxy Anti-Corrosion Coating

et al. 2022

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The high aspect ratio and unique thermal and electrical characteristics of carbon nanofiber (CNF) made it an ideal physical barrier against the penetration of corrosive ions. However, the poor compatibility of the CNF with the polymer matrix and the lack of active corrosion inhibitors are the key limitations of this nanomaterial, resulting in short-term anti-corrosion resistance. An intelligent self-healing epoxy (EP) coating, including CNF modified with a polydopamine (PDA)−La 3+ complex, was successfully fabricated to overcome these issues. Electrochemical impedance spectroscopy (EIS) evaluation implied that mild steel (MS) submerged in a 3.5 wt % NaCl solution containing the CNF− PDA−La extract had a total corrosion resistance (R T ) of 3107 Ω cm 2 after 24 h, which is much greater than the MS immersed in the blank solution (1378 Ω cm 2 ). Furthermore, the potentiodynamic polarization analysis indicated a 50% reduction in the corrosion rate (CR) of the MS soaked in the solution containing released PDA and La 3+ inhibitors compared to the blank solution. EIS and salt spray analysis were used to assess the self-healing capabilities of epoxy coatings incorporating modified CNFs. EIS assessment of scratched coatings revealed a 117% improvement in R T of the CNF−PDA−La/EP coating compared to the Blank/EP after 10 h of immersion in the saline solution. This enhancement is due to the intelligent release of PDA and La 3+ inhibitors at the scratch sites, which can mitigate MS corrosion by forming a PDA−Fe complex and the deposition of La(OH) 3 on the MS surface. The salt spray test results also exhibited the CNF−PDA−La/EP coating's superior anti-corrosion capabilities after 20 days. Hence, this research presents a logical approach for developing anti-corrosion coatings with improved nanofiller compatibility and self-healing characteristics.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

pH-Sensitive Polydopamine–La (III) Complex Decorated on Carbon Nanofiber toward On-Demand Release Functioning of Epoxy Anti-Corrosion Coating

et al. 2022

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“…8 The application of organic coatings is an effective way to protect aluminum alloys from corrosion. 9 A plethora of anti-corrosion technologies such as cathodic protection, alloy protection and polymer-based protective coatings have been developed. Corrosion resistant coatings are by far the most effective measure as they provide barrier protection and anodic protection.…”

Section: Introductionmentioning

confidence: 99%

Corrosion protection of aluminum alloy (AA2219-T6) using sulfonic acid-doped conducting polymer coatings

et al. 2022

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“…Due to their strong adhesion and small curing shrinkage, epoxy-based coatings account for about 60% of all anti-corrosion coatings [ 1 ]. However, epoxy resins are brittle and have poor mechanical properties, and the coatings are easily damaged.…”

Section: Introductionmentioning

confidence: 99%

“…In the fields of aviation and rail transportation, parts and components are inevitably affected by wear, corrosion, and other damage, which requires the coating to have not only a good corrosion resistance but also excellent wear resistance, because friction can destroy the surface coating of the substrate. The layer structure forms defects, and the corrosive medium easily invades through these defects, thereby causing corrosion [ 1 , 22 , 23 ]. However, there are few studies on epoxy-based coatings that are both anti-corrosive and wear-resistant.…”

Section: Introductionmentioning

confidence: 99%

A Micro-Nano Structure Formed by SiC/Graphene Oxide Self-Assembly Improves the Wear Resistance and Corrosion Resistance of an Epoxy-Based Composite Coating

Tang

Tan

et al. 2022

Polymers

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In air and railway transportation, corrosion and wear lead to the rapid failure of equipment. Epoxy (EP)-based coatings are widely used in research on the anti-corrosion of organic coatings, but their application as materials for wear resistance is limited due to their non-abrasive properties. In this study, a novel high-performance epoxy-based composite coating was developed through the self-assembly of silicon carbide (SiC) and graphene oxide (GO) and the tuning of the interfacial structure with epoxy resin. The coatings were comprehensively characterized, including their electrochemical behavior, a salt spray test, and friction and wear experiments, and the optimal addition ratio of SiC-G@GO (SiC-G@GO was prepared by the self-assembly of γ-(2,3-epoxypropoxy) propytrimethoxysilane (KH560)-modified SiC (SiC-G) on the surface of GO sheets) in the epoxy coatings was explored. Benefiting from the labyrinth effect and their rolling-friction-like microstructure, the 1 wt% SiC-G@GO/EP coating exhibits excellent wear and corrosion resistance. Compared with pure epoxy resin, the 1 wt% SiC-G@GO/EP coating increased by 4 orders of magnitude after 10 days of immersion. The average friction coefficient was 41.5% lower than that of the pure EP coating, and the wear rate was 56.6% lower. This research has positive implications for the development and application of anti-corrosion and wear-resistant organic coatings.

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Nanocomposite organic coatings for corrosion protection of metals: A review of recent advances

Cited by 120 publications

References 219 publications

pH-Sensitive Polydopamine–La (III) Complex Decorated on Carbon Nanofiber toward On-Demand Release Functioning of Epoxy Anti-Corrosion Coating

pH-Sensitive Polydopamine–La (III) Complex Decorated on Carbon Nanofiber toward On-Demand Release Functioning of Epoxy Anti-Corrosion Coating

Corrosion protection of aluminum alloy (AA2219-T6) using sulfonic acid-doped conducting polymer coatings

A Micro-Nano Structure Formed by SiC/Graphene Oxide Self-Assembly Improves the Wear Resistance and Corrosion Resistance of an Epoxy-Based Composite Coating

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