Mechanism of corrosion protection of aluminum alloy substrate by hybrid polymer nanocomposite coatings

Singh-Beemat, Jaspreet; Iroh, Jude O.; Feng, Linqian

doi:10.1016/j.porgcoat.2013.06.012

Cited by 19 publications

(9 citation statements)

References 25 publications

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“…In comparison with bare sample, the samples with ceria coatings obtain a higher value of the slope of anodic and cathodic branches, which means that the anticorrosion resistance of the alloy with appropriate dip-coating time has been significantly improved by the inhibition effect of ceria coating for both anodic and cathodic reactions. [27][28][29] Effect of anticorrosion ceria coating…”

Section: Effect Of Dip-coating Timementioning

confidence: 99%

Sol–gel route to ceria coatings on AA2024-T3 aluminum alloy

Zuo

et al. 2014

J Coat Technol Res

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The ceria coating was studied as an efficient alternative to the chromate protective coating of aluminum alloys. The environmentally friendly inhibitor of cerium ion was incorporated into the surface coating using Ce(NO 3 ) 3 as precursor via a sol-gel route. The coatings were analyzed with FESEM and EDS. The anticorrosion performance evaluation of the coatings was carried out using electrochemical methods and full immersion experiments. Under the conditions of surface pretreatment with 15 wt% NaOH solution for 20 s, a sol reaction time of 2 h and 3-5 times of dip-coating, the uniform ceria coatings with low defect and barrier were successfully synthesized. After the full immersion process, pitting holes containing copper-rich phases were detected on the surface of the uncoated sample. In contrast, such holes were not observed on the coated sample. Furthermore, the I corr values of the coated samples were smaller than that of the uncoated one, which confirms that the coatings provide a considerable protection barrier and promote the anticorrosion performance of aluminum alloys.

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Section: Effect Of Dip-coating Timementioning

confidence: 99%

Sol–gel route to ceria coatings on AA2024-T3 aluminum alloy

Zuo

et al. 2014

J Coat Technol Res

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“…The focus of this paper is to improve corrosion resistance of hybrid polymer coating containing epoxy ester, polyurea and polysiloxane by incorporation of nanosized graphene sheets. Singh-Beemat and Iroh [6,14,15] reported remarkable improvement in the corrosion resistance of epoxy ester coatings containing 2-D organoclay nanofillers. A remarkable increase in modulus and gas barrier properties of the coatings was also observed after reinforcement with organoclay nanofillers.…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical and corrosion inhibition properties of graphene/epoxy ester–siloxane–urea hybrid polymer nanocomposites

Okafor

Singh-Beemat

Iroh

2015

Progress in Organic Coatings

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“…Due to the high chromate toxicity for human beings and environment, the use of these compounds will be banished in 2017 in the aircraft sector. Many studies concern the development of new technologies and alternatives aiming at avoiding the use of chromate: sol-gel coatings [7][8][9][10][11], new anodizing layers [12][13][14][15] and elaboration of organic-, inorganic-or hybrid coatings [16][17][18][19]. Epoxy resin coatings are generally used as organic coatings to prevent corrosion of aeronautic structures due to their good mechanical properties, strong adhesion, high crosslinking density and excellent chemical resistance [20,21].…”

Section: Introductionmentioning

confidence: 99%