Recent advances and future perspectives for carbon nanostructures reinforced organic coating for anti-corrosion application
Introduction
Corrosion is considered as a harmful phenomenon, which threatens the durability of infrastructures and leads to immense costs and damage to industrial units and constructions. Therefore, the total cost and environmental consequences of corrosion problems have become a significant challenge for engineers [1]. Corrosion is a continuous process that cannot be entirely prevented in any corrosive environment. Thus, the corrosion prevention strategies are only concentrated on lowering the kinetics and altering its mechanism. These strategies include alloying steel [2], cathodic and anodic protection [3], the use of protective surface coatings [4], [5], [6], application of corrosion inhibitors [7,8], or combinations of them [9,10]. Using protective coatings is one of the best approaches in order to prevent the metal surfaces from corrosion.
On the other hand, they also delay the access of corrosive species to the substrate, which leads to the progress of the chemical corrosion reactions on the surface. A set of protective coatings, including organic, hybrid organic/inorganic, conversion, and metallic coatings, have been developed as a barrier to prevent or delay the metal damage by limiting the corrosive materials access to the metallic substrate [11]. The conventional anti-corrosive coatings, which have been almost based on heavy metals (such as chromium, phosphate, zinc, and copper-based compounds), are toxic and environmentally harmful [12], [13], [14], [15]. So, there has been an effort to find appropriate non-toxic materials with less negative impacts on the eco-system and high effectiveness in the prevention of the metals from corrosion.
Nowadays, protection of the metal surface against corrosive media by organic coatings is the most conventional and cost-effective method [16]. Organic coatings have considerable physical shielding properties against the penetration of corrosive species, which could significantly delay the reaching time of the corrosive species to the substrate. Furthermore, organic coatings can protect by sacrificial action, or by active corrosion inhibition provided by incorporation of active/passive pigments into the coatings [17]. However, organic coatings are more or less permeable to corrosive species [18]. Free volumes and defects are almost present inside the coating, which could be generated during the coating application or curing processes, leading to the generation of microscopic pathways in the coatings [19]. Therefore, the coatings cannot supply long term corrosion protection. To progress the corrosion protection properties of the organic coatings, various approaches have been proposed. Among the suggested strategies, incorporation of different fillers and anti-corrosive pigments has been detected impressive in the enhancement of corrosion protection. Generally, the anticorrosive pigments can be separated into three categories involving barrier inorganic/organic pigments (e.g., lamellar aluminum pigment [20,21], micaceous iron oxide [22], zinc oxide, and glass flake [23,24], sacrificial metallic pigments (e.g., zinc powder [25]) and inhibitive active pigments (e.g., zinc phosphates [26,27]). In the two past decades, attention has been directed toward the incorporation of nanoparticles into the organic coatings to improve their protection efficiency. It has been shown that nanoparticles such as SiO2 [28], Al [29], Zn [29], Si [30], ZnO [31], Al2O3 [32], TiO2 [33], ZrO2 [34], Clay [35], Fe2O3 [36], carbon nanotubes (CNTs) [37], graphene (G) and graphene oxide (GO) [38] provide much better barrier properties rather than conventional microparticles owing to their higher surface area/activity and very lower usage content in the coating matrix. Nanoparticles can effectively fill the microscopic porosities and defects existed within the coating and increase the electrolyte pathway length. Among the available nanofillers, the carbon-based nanofillers (Fig. 1) especially CNT and graphene due to their super mechanical strength and high thermal and chemical stability have drawn considerable research interest for exploring the functional nanocomposites with enhanced anticorrosion performance [39]. A review of the literature shows that a number of review articles have covered the covalent/noncovalent functionalization methods of carbon nanostructure. There is a need to present a comprehensive overview on the synthesis, functionalization and application of carbon nanostructure especially on the application of corrosion protection. Herein, an outline of the different types of carbon nanostructure derivatives given with the synthesis methodologies adopted for the preparation of CB, CNT, G and GO. A detailed description provided for the noncovalent and covalent approaches adopted for the synthesis of carbon nanostructure derivatives. The basics of the corrosion protection methods using anti-corrosion coatings and corrosion inhibitors described. The present chapter highlights the application of CB, CNT, G, GO, CNF and CQD its different forms and their functionalized derivatives in corrosion protection namely in the area of anti-corrosion coatings and in corrosion inhibition. In the present review, different methods for the protection of mild steel with oraganic polymer reinforced with CB, CNT, G and GO, the different routes of chemical functionalization of the nanomaterials and their application in anticorrosion coatings and corrosion inhibitors explained. Some drawbacks identified, and the scope of further research in this area has been outlined.
Section snippets
Carbon black (CB)-based nanocomposites
CB is extensively used in the painting industry as a colorant or pigment and can be used as an ultraviolet stabilizer to extend the lifetime of the coatings. It appears that the nanocomposite coatings containing CB particles are very promising as materials for corrosion protection of steel [41]. The high specific surface area and/or activity of CB are involved in the intense interfacial connection of coating to the CB nanoparticles. Incorporation of nanoparticles into the coatings causes
Carbon nanotube-based nanocomposites
Carbon nanotubes (Fig. 5) [54] have been considered as promising candidates for conductive additives because of their large aspect ratio, the large specific surface area, and the proper electrical properties [55,56]. Also, the CNTs provide excellent mechanical properties, in particular enhanced stiffness, fracture toughness, and Young's modulus (on the order of 270 – 950 GPa) besides high thermal stability. The addition of a small number of CNTs into an organic coating can effectively improve
Graphene-based nanocomposites
Graphene-based materials including graphene (G), graphene oxide (GO), and reduced graphene oxide (rGO) nanosheets have received considerable interest in the last decades since these nanoparticles possess superior mechanical, thermal, electrical, and barrier/inhibitive properties [92], [93], [94], [95]. Graphene-based nanosheets have been shown to be favorable in the construction of corrosion-resistant coatings with more performance and durability compared to traditional ones [18]. This can be
5-Carbon quantum dots (CQDs)-based nanocomposites
Carbon quantum dots (CQDs) are a new category of carbon based nano materials with sizes below 100 nm (mostly range from 3 to 20 nm) [138,139]. This novel material have received increasing attention because of their unique properties including large surface area, non-toxicity, excellent biocompatibility, strong water dispersibility and stable chemical properties [140], [141], [142], [143], [144]. CQDs are typically quasi-spherical nanoparticles comprising amorphous to nanocrystalline cores with
Carbon nanofiber (CNF)-based nanocomposites
Chen et al. successfully doped Zirconia (ZrO2) on the carbon fiber (CNF) through the electrospinning method and added to the epoxy coating and prepared ZrO2-CNF/epoxy nanocomposite coatings [163]. In order to enhance the dispersion of prepared zirconia doped carbon fiber (ZrO2-CNF) in the epoxy resin the it was modified with γ-(2,3-epoxypropoxy)propytrimethoxysilane (KH560). Electrochemical analysis revealed that the CNF and ZrO2-CNF nanowires could improve the impedance performance of
Protection efficiency of carbon-based nanocomposites
The corrosion resistance and efficiency values are dependent on the substrate, coating matrix, coating conditions, corrosive environment, nanoparticle types, and so on. Consequently, it is difficult to compare the coatings' corrosion resistance and evaluate the effects of various nanoparticles on their corrosion resistance. However, it would be an appropriate way to calculate each conductive nano-coatings corrosion efficiency based on its neat form. Therefore, the corrosion protection
Declaration of Competing Interest
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
References (184)
- et al.
Mechanical and anticorrosion properties of nanosilica-filled epoxy-resin composite coatings
Applied Surface Science
(2014) - et al.
Electrochemical deposition of a carbon nanotube-poly (o-phenylenediamine) composite on a stainless steel surface
Synthetic metals
(2011) - et al.
Corrosion inhibition of polyaniline and poly (o-methoxyaniline) on stainless steels
Synthetic metals
(2002) - et al.
Inhibition of mild steel corrosion by some macrocyclic compounds in hot and concentrated hydrochloric acid
Materials chemistry and physics
(2002) - et al.
Corrosion inhibitors for steel in concrete: State-of-the-art report
Construction and Building Materials
(2008) - et al.
‘Smart'corrosion inhibiting coatings
Progress in Organic Coatings
(2003) - et al.
Preparation and characterization of microcapsules containing linseed oil and its use in self-healing coatings
Progress in organic coatings
(2008) - et al.
Novel water based coatings containing some conducting polymers nanoparticles (CPNs) as corrosion inhibitors
Progress in Organic Coatings
(2014) - et al.
Characterisation of barrier properties of organic paints: the zinc phosphate effectiveness
Progress in Organic Coatings
(2003) - et al.
The mode of action of chromate inhibitor in epoxy primer on galvanized steel
Progress in Organic Coatings
(1998)
Electrochemical impedance spectroscopy investigations of epoxy zinc rich coatings: role of Zn content on corrosion protection mechanism
Electrochimica Acta
A study on the anticorrosion performance of epoxy nanocomposite coatings containing epoxy-silane treated nano-silica on mild steel substrate
Journal of Industrial and Engineering Chemistry
Corrosion studies on electrochemically deposited PANI and PANI/epoxy coatings on mild steel in acid sulfate solution
Progress in organic coatings
Covalently-grafted graphene oxide nanosheets to improve barrier and corrosion protection properties of polyurethane coatings
Carbon
Synthesize and characterization of a novel anticorrosive cobalt ferrite nanoparticles dispersed in silica matrix (CoFe2O4-SiO2) to improve the corrosion protection performance of epoxy coating
Applied Surface Science
Resistance of metallic substrates protected by an organic coating containing glass flakes
Progress in Organic Coatings
Evaluation of the corrosion resistance of an epoxy-polyamide coating containing different ratios of micaceous iron oxide/Al pigments
Corrosion Science
EIS characterisation of new zinc-rich powder coatings
Progress in organic coatings
Evaluation of zinc phosphate and zinc chromate effectiveness via AC and DC methods
Progress in organic coatings
Corrosion inhibition by chromate and phosphate extracts for iron substrates studied by EIS and SVET
Corrosion Science
Investigation of corrosion protection properties of an epoxy nanocomposite loaded with polysiloxane surface modified nanosilica particles on the steel substrate
Progress in Organic Coatings
Effect of nanoparticles on the anticorrosion and mechanical properties of epoxy coating
Surface and Coatings Technology
Electrochemical investigation of the properties of Co doped ZnO nanoparticle as a corrosion inhibitive pigment for modifying corrosion resistance of the epoxy coating
Corrosion Science
Novel bis-silane/TiO2 bifunctional hybrid films for metal corrosion protection both under ultraviolet irradiation and in the dark
Scripta materialia
Corrosion performance of epoxy coatings containing silane treated ZrO2 nanoparticles on mild steel in 3.5% NaCl solution
Corrosion Science
New advances in polymer/layered silicate nanocomposites
Current Opinion in Solid State and Materials Science
Impact of electrolyte intercalation on the corrosion of graphene-coated copper
Corrosion Science
In-situ reduction and deposition of Ag nanoparticles on black phosphorus nanosheets co-loaded with graphene oxide as a broad spectrum photocatalyst for enhanced photocatalytic performance
Journal of Alloys and Compounds
Corrosion protection properties of lacquer coatings on steel modified by carbon black nanoparticles in NaCl solution
Corrosion science
Localized elastic modulus distribution of nanoclay/epoxy composites by using nanoindentation
Composite structures
Improvement of bearing strength of laminated composites
Composite Structures
Morphology, thermal relaxations and mechanical properties of layered silicate nanocomposites based upon high-functionality epoxy resins
Polymer
Evaluation of corrosion protection of carbon black filled fusion-bonded epoxy coatings on mild steel during exposure to a quiescent 3% NaCl solution
Corrosion science
Corrosion protection by organic coatings: electrochemical mechanism and novel methods of investigation
Electrochimica Acta
Characterization of non-aqueous dispersions of carbon black nanoparticles by electrochemical impedance spectroscopy
Journal of Electroanalytical Chemistry
Corrosion behavior of modified nano carbon black/epoxy coating in accelerated conditions
Applied surface science
Thermal conductivity of carbon nanotubes and their polymer nanocomposites: A review
Progress in polymer science
Carbon nanotube-reinforced epoxy-composites: enhanced stiffness and fracture toughness at low nanotube content
Composites science and technology
Corrosion protection by epoxy coating containing multi-walled carbon nanotubes
Journal of Industrial and Engineering Chemistry
Effects of P/B on the properties of anticorrosive coatings with different particle size
Progress in Organic Coatings
Effects of carbon nanotube content on adhesion strength and wear and corrosion resistance of epoxy composite coatings on AA2024-T3
Progress in Organic Coatings
Thermo-mechanical and anti-corrosive properties of MWCNT/epoxy nanocomposite fabricated by innovative dispersion technique
Composites Part B: Engineering
Nanocomposites of polybenzoxazine-functionalized multiwalled carbon nanotubes and polybenzoxazine for anticorrosion application
Composites Science and Technology
Carbon nanotube/polyaniline core-shell nanowires prepared by in situ inverse microemulsion
Synthetic Metals
Corrosion protection of aluminum bipolar plates with polyaniline coating containing carbon nanotubes in acidic medium inside the polymer electrolyte membrane fuel cell
Journal of Power Sources
Development of conducting polyaniline coating: a novel approach to superior corrosion resistance
Surface and Coatings Technology
The influence of carbon nanotubes on the corrosion behaviour of AZ31B magnesium alloy
Corrosion science
Hybrid nanocomposites containing carbon nanotubes and graphite nanoplatelets
Materials Science and Engineering: A
Influence of different carbon nanotubes on the mechanical properties of epoxy matrix composites–a comparative study
Composites Science and Technology
Polyaniline and polyaniline–thiokol rubber composite coatings for the corrosion protection of mild steel
Materials chemistry and physics
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