Preparation and corrosion behavior studies of chemically bonded phosphate ceramic coating reinforced with modified multi‐walled carbon nanotubes (<scp>MWCNT</scp>s)

Rongli, Xu; Bian, Da; Aradhyula, Thirumala Vasu; Chavali, Murthy

doi:10.1111/ijac.13107

Cited by 15 publications

(6 citation statements)

References 20 publications

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“…(a) Low frequency impedance modulus | Z | f =0.01 ; (b) R c and (c) Q c values of coatings obtained by (d) model C; (e) self-healing efficiency of coatings; (f) comparison between this work and previously reported phosphate ceramic coatings − regarding corrosion resistance and self-healing properties.…”

Section: Resultsmentioning

confidence: 81%

In Situ Polymerized Self-Healing Microcapsules as Multifunctional Fillers toward Phosphate Ceramic Coatings

Wang,

Wu,

Huang

et al. 2024

ACS Appl. Mater. Interfaces

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The protective efficacy of chemically bonded phosphate ceramic coatings (CBPC) is notably diminished owing to the presence of micropores and inadequate self-healing capacity in prolonged corrosive environments. Consequently, it is imperative to augment the corrosion and wear resistance of phosphate ceramic coatings while imbuing them with self-healing capabilities. In this work, a novel self-healing phosphate ceramic coating (MC-PT x @CBPC, x = 0.5, 1.0, 1.5) is designed by ureaformaldehyde (UF) in situ polymerization of nanoscale microcapsules encapsulated with 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTES) and evaluated in detail for corrosion and wear resistance. The corrosion inhibition efficiencies of all formulated MC-PT x @CBPC (x = 0.5, 1.0, 1.5) coatings exceed 90%, with the impedance modulus at the lowest frequency (| Z| f=0.01 ) showing enhancements of 1−2 orders of magnitude compared to pure CBPC. Moreover, the self-healing function becomes active during prolonged immersion. This can be primarily ascribed to the formation of a unique micronanostructure facilitated by nanoscale microcapsules and micrometer-sized alumina ceramics, bonded via the AlPO 4 phase. This structure enhances both the hydrophobicity and the bonding strength of the coating. Specifically, following prolonged immersion, the encapsulated PFDTES is liberated from the microcapsules, undergoing hydrolysis and subsequent polymerization upon contact with the electrolyte to form a protective thin film. This film efficiently obstructs the ingress of corrosive agents. Furthermore, the special micronanostructure enhances the hardness of the coating and the releasing PFDTES can form a lubricating film at the interface of abrasion, thus reducing the wear rate and friction coefficient of the MC-PT x @CBPC (x = 0.5, 1.0, 1.5). Therefore, MC-PT x @CBPC (x = 0.5, 1.0, 1.5) possesses excellent corrosion protection, tribological properties, and self-healing capabilities, which provide thought-provoking ideas for phosphate ceramic coatings to protect metals in harsh environments.

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Section: Resultsmentioning

confidence: 81%

In Situ Polymerized Self-Healing Microcapsules as Multifunctional Fillers toward Phosphate Ceramic Coatings

Wang,

Wu,

Huang

et al. 2024

ACS Appl. Mater. Interfaces

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“…The development of novel reinforced composite materials or alteration of existing composite material to face reality is very challenging for most materials scientists (Rongli et al, 2019) Previous studies have indicated that there is a significant improvement in 74 Effect of nano-α-Al2O3 Particles on Mechanical Properties of Glass-Fibre Reinforced Epoxy Hybrid Composites mechanical properties with epoxy matrix modification (Bahereh et al, 2016). One approach to modify the polymer matrix with nil or less covalent interaction or supramolecular interaction is to incorporate metals in their nanoscale either as free metal or metal oxide (Chavali et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of nano-α-Al2O3 Particles on Mechanical Properties of Glass-Fibre Reinforced Epoxy Hybrid Composites

Veerapaneni¹,

Kuppan

Chavali³

2021

ASEAN J. Chem. Eng.

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The present work deals with the mechanical properties of hybrid nanocomposites made of epoxy/glass fibre dispersed with different weight percentages of nano-α-Al2O3 powder . The nanoparticles were synthesized by a high energy ball milling technique (60 and 200 nm).. The effect of nano-α-Al2O3 size and content (wt%) on mechanical properties, such as tensile, flexural, interlaminar shear stress (ILSS) and hardness was investigated. The addition of nano-α-Al2O3 enhanced all measured mechanical parameters because of their higher surface area and interfacial polymer-metal interaction. The nanoparticle-embedded laminates showed an improvement in flexural strength and hardness compared to laminate without nano-α-Al2O3. Among all the wt% of varied sizes of nano-α-Al2O3, the highest tensile strength was shown by the addition of 0.5 wt% 200nm nano-α-Al2O3 (167.80 N/m2). The highest flexural strength (378.39 N/m2) Vickers hardness (86.72) were observed for laminates containing 1.5 wt% of 60nm nano-α-Al2O3, while the highest ILSS (31.21 Ksi) was observed for 0.5 wt% of 60nm nano-α-Al2O3. This study showed that there was a higher interaction between the nanoparticle and polymer resin, which led to increasing the mechanical properties of the laminate. This finding show that diversifiying the application of these hybrid materials was possible by adding nano-alumina.

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“…Recently, great efforts have been given to prepare coatings which can act as an effective barrier to protect the mild steel from corrosion destruction . Chemically bonded phosphate ceramic coating, among all kinds of coatings, has attracted particular attention due to its quick operation, low cost, excellent heat‐resistant property etc Various methods have been attempted to enhance the barrier property of chemically bonded phosphate ceramic coatings (CBPCs); however, what is lacking in this field is the research on the effects of coating thickness as well as etching time to the corrosion protection property of the coating.…”

Section: Introductionmentioning

confidence: 99%

The long‐term effectiveness and failure mechanism of the chemically bonded phosphate ceramic coatings with different thickness

Liu

Bian

2019

Int J Applied Ceramic Tech

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In this study, the chemically bonded phosphate ceramic coatings (CBPCs) with different thickness (100 µm, 200 µm, and 300 µm) are prepared on the mild steel (Q235). Potentiodynamic polarization testing and electrochemical impedance spectroscopywere carried out to study the synthetic effect of coating thickness and etching time (12,24,36, and 48 hours) on the corrosion behavior of CBPCs. The surface and cross section microstructure of CBPCs before and after different immersion time in 3.5 wt.% NaCl solution is investigated to better understand the corrosion behavior.Results revealed that the enhanced coating thickness can effectively postpone the corrosive factors infiltration into the substrate and prohibit the corrosion of the mild steel. From the potentiodynamic polarization testing results, the protection efficiency of the coating greatly increases with the increase in etching time. In addition, an increase in 10 000 and 1000 orders of magnitude of impedance value for the CBPCs with 12 hours and 48 hours etching time has been observed, respectively, indicating the CBPCs can effectively protect the mild steel from corrosion damage even with long-term service. K E Y W O R D Schemically bonded phosphate ceramic coatings, coating thickness, corrosion performance, etching time, mild steel

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Preparation and corrosion behavior studies of chemically bonded phosphate ceramic coating reinforced with modified multi‐walled carbon nanotubes (MWCNTs)

Cited by 15 publications

References 20 publications

In Situ Polymerized Self-Healing Microcapsules as Multifunctional Fillers toward Phosphate Ceramic Coatings

In Situ Polymerized Self-Healing Microcapsules as Multifunctional Fillers toward Phosphate Ceramic Coatings

Effect of nano-α-Al2O3 Particles on Mechanical Properties of Glass-Fibre Reinforced Epoxy Hybrid Composites

The long‐term effectiveness and failure mechanism of the chemically bonded phosphate ceramic coatings with different thickness

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