Enhancement of the corrosion protection performance and cathodic delamination resistance of epoxy coating through treatment of steel substrate by a novel nanometric sol-gel based silane composite film filled with functionalized graphene oxide nanosheets

Ramezanzadeh, Bahram; Ahmadi, A; Mahdavian, M.

doi:10.1016/j.corsci.2016.04.004

Cited by 326 publications

(100 citation statements)

References 69 publications

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“…In Figure 5a, the Bode plot for day 1 is a straight line, with a low-frequency impedance modulus that reaches a value of 10 7 Ω/cm 2 . After seven or more days of immersion, overlapping straight lines can be observed with a low-frequency impedance modulus of~10 5 Ω/cm 2 , which is typical for epoxy coatings in harsh degeneration conditions [35]. The phase diagram confirms that there are already two time…”

Section: Resultssupporting

confidence: 59%

Anti-Corrosive and Scale Inhibiting Polymer-Based Functional Coating with Internal and External Regulation of TiO2 Whiskers

Wang

et al. 2018

Coatings

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Abstract:A novel multi-functional carrier of mesoporous titanium dioxide whiskers (TiO 2 (w)) modified by ethylenediamine tetra (methylene phosphonic acid) (EDTMPA) and imidazoline was devised in epoxy coating to improve the anti-corrosion and scale inhibition properties of metal surface. Rigorous characterization using analytical techniques showed that a mesoporous structure was developed on the TiO 2 (w). EDTMPA and imidazoline were successfully grafted on the outer and inner surfaces of mesoporous TiO 2 (w) to synthesize iETiO 2 (w). The results demonstrated that the corrosion resistance of the final iETiO 2 (w) epoxy coating is 40 times higher than that of the conventional unmodified OTiO 2 (w) epoxy coating. The enhanced corrosion resistance of the iETiO 2 (w) functional coating is due to the chelation of the scaling cations by EDTMPA and electron sharing between imidazoline and Fe. Scale formation on the iETiO 2 (w) coating is 35 times lower than that on the unmodified OTiO 2 (w) epoxy coating. In addition, EDTMPA and imidazoline act synergistically in promoting the barrier property of mesoporous TiO 2 (w) in epoxy coating. It is believed that this novel, simple, and inexpensive route for fabricating functional surface protective coatings on various metallic materials will have a wide range of practical applications.

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Section: Resultssupporting

confidence: 59%

Anti-Corrosive and Scale Inhibiting Polymer-Based Functional Coating with Internal and External Regulation of TiO2 Whiskers

Wang

et al. 2018

Coatings

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“…Various organic coatings such as epoxies, polyurethanes, polyesters, alkyds, and chlorinated rubber are commonly used as corrosion protection layer on metallic surfaces, from which epoxies are one of the most important coatings because of their superior mechanical properties, chemical resistance, adhesion to substrates, and good electrical insulating properties . These beneficial properties led to widespread use of epoxies as corrosion protection coating for steel substrates . However, like other organic coatings, epoxies are not free of pores and as stated above, an effective choice is to incorporate nanoparticles in these coatings …”

Section: Introductionmentioning

confidence: 99%

Corrosion protection performance of nanoparticle incorporated epoxy paint assessed by linear polarization and electrochemical impedance spectroscopy

Torknezhad

Khosravi

Assefi

2017

Materials & Corrosion

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Epoxy paint was homogeneously incorporated with Al2O3(α), Fe2O3(α), SiO2, and ZnO nanoparticles at 1, 2, and 3 wt% with respect to total weight of hardener and undried epoxy, and coated on carbon steel coupons. Corrosion protection performance of the samples was evaluated by linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) in 3 wt% NaCl solution. Analysis of LSV data and thorough analysis of EIS data showed the beneficial effect of all types of nanoparticles at 1 wt%. For 2 and 3 wt% samples, performance was different, depending on the nanoparticle type. However, the sample containing 3 wt% Al2O3(α) showed the best performance among all the tested samples. The results were correlated to the ability of the nanoparticles to block corroding coatings by decreasing the porosity of the dried epoxy paint.

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“…However, chromate-based conventional coatings have toxic effects. Therefore, current research has been directed towards ecofriendly alternatives [4]. In recent years, organo-functional hybrid sol-gel coatings have gained much attention for the protection of metals against corrosion because these coatings adhere well to metallic substrates and form a very good physical barrier between the metal and the corrosive species [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Hybrid sol-gel/thiourea binary coating for the mitigation of copper corrosion in neutral medium

Karthik

Lee

Sethuraman

2017

Progress in Organic Coatings

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Enhancement of the corrosion protection performance and cathodic delamination resistance of epoxy coating through treatment of steel substrate by a novel nanometric sol-gel based silane composite film filled with functionalized graphene oxide nanosheets

Cited by 326 publications

References 69 publications

Anti-Corrosive and Scale Inhibiting Polymer-Based Functional Coating with Internal and External Regulation of TiO2 Whiskers

Anti-Corrosive and Scale Inhibiting Polymer-Based Functional Coating with Internal and External Regulation of TiO2 Whiskers

Corrosion protection performance of nanoparticle incorporated epoxy paint assessed by linear polarization and electrochemical impedance spectroscopy

Hybrid sol-gel/thiourea binary coating for the mitigation of copper corrosion in neutral medium

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