Inhibition of aluminum alloy corrosion in electrolytes by self‐assembled fluorophosphonic acid molecular layer

Telegdi, J.; Luciano, Giorgio; Mahanty, S.; Abohalkuma, T.

doi:10.1002/maco.201508792

Cited by 18 publications

(10 citation statements)

References 34 publications

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“…The SAM surface modification method is generally used to reduce, e.g., corrosion and to mitigate biodeposition, for producing organic thin films on electronic units, for functionalization of a nanostructure on bigger surfaces, etc. [ 29 , 30 , 31 , 32 ]. The SAM method was elaborated by different research groups in the middle of the 1980s [ 33 , 34 , 35 , 36 , 37 , 38 , 39 ].…”

Section: Self-assembled Nanolayersmentioning

confidence: 99%

“…Studies on a series of alkyl phosphonic acids (C: 8, 10, 18) and on perfluorodecyl phosphonic acid affirmed the observation of the other researchers [ 126 ]. It was interesting that the very effective fluorophosphonic acid inhibits both the general and the pitting corrosion on mild steel, but was less active on aluminum in inhibition of uniform corrosion as the electrochemical and atomic force microscopic corrosion tests proved [ 29 ].…”

Section: Sam Layers Built From Different Chemicalsmentioning

confidence: 99%

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Formation of Self-Assembled Anticorrosion Films on Different Metals

Telegdi

2020

Materials

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The review will first discuss shortly the phenomenon of corrosion and enroll some general possibilities to decrease the rate of this deterioration. The stress will be laid upon the presentation of anticorrosive self-assembled molecular (SAM) layers as well as on the preparation technology that is a simple technique, does not need any special device, and can be applied on different solids (metals or non-metals) alone or in combination. The paper groups the chemicals (mainly amphiphiles) that can develop nanolayers on different pure or oxidized metal surfaces. The history of the self-assembled molecular layer will be discussed from the beginning of the first application up to now. Not only the conditions of the nanofilm preparation as well as their characterization will be discussed, but the methods that can evaluate the corrosion-inhibiting efficiency of the SAM layers under a corrosive environment will be demonstrated as well.

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Section: Self-assembled Nanolayersmentioning

confidence: 99%

Section: Sam Layers Built From Different Chemicalsmentioning

confidence: 99%

Formation of Self-Assembled Anticorrosion Films on Different Metals

Telegdi

2020

Materials

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“…Telegdi et al [59], explaining the widespread recognition of SAMs formed by perfluoroalkylphosphonic acids usually containing C 7 or C 8 , noted that such ultrathin coatings are better than similar APhs with hydrocarbon or silicone tails. With the example of APhC 8 F 10 , they showed the ability of APhF to prevent not only general but also local corrosion of an Al alloy in 0.1 M NaCl.…”

Section: Mono-and Diphosphonic Acids and Their Saltsmentioning

confidence: 99%

Organic corrosion inhibitors: where are we now? A review. Part IV. Passivation and the role of mono- and diphosphonates

Kuznetsov¹

2017

Int. J. Corros. Scale Inhib.

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This article continues the review of studies (2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016) dealing with the passivation of various metals by solutions of organic corrosion inhibitors. It provides an overview of papers on the passivating properties of mono-and diphosphonic acids and their salts. The results of corrosion and electrochemical studies, as well as studies on the composition and structural features of surface layers on metals by a variety of physicochemical methods are considered.

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“…The aluminium matrix spontaneously forms a protective insulating ultra-thin oxide film with terminating surface hydroxyl groups under atmospheric conditions and near neutral pH-values [ 8 , 9 ]. Such hydroxylated aluminium oxide surfaces enable the stable binding of molecules with corrosion protecting and/or adhesion promoting properties such as organophosphonic acids [ 10 , 11 , 12 , 13 , 14 ], fatty acids [ 15 , 16 , 17 ], and organosilanes [ 18 , 19 ]. Aryl diazonium salts have been also reported as precursors of thin organic films adsorbed on aluminium alloys, with potential applications for the corrosion protection of these materials [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Electrografting of 4-Nitrobenzenediazonium Salts on Al-7075 Alloy Surfaces—The Role of Intermetallic Particles

Gómez

Grundmeier

et al. 2021

Nanomaterials

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In this work, the electrografting of Al-7075 aluminium alloy substrates with 4-nitrobenzenediazonium salt (4-NBD) films was studied on a complex aluminium alloy surface. Prior to the electrografting reaction, the substrates were submitted to different surface treatments to modify the native aluminium oxide layer and unveil intermetallic particles (IMPs). The formation of the 4-NBD films could be correlated with the passive film state and the distribution of IMPs. The corresponding electrografting reaction was performed by cyclic voltammetry which allowed the simultaneous analysis of the redox reaction by a number of complementary surface-analytical techniques. Spatially resolved thin film analysis was performed by means of SEM-EDX, AFM, PM-IRRAS, Raman spectroscopy, XPS, and SKPFM. The collected data show that the 4-NBD film is preferentially formed either on the Al oxide layer or the IMP surface depending on the applied potential range. Potentials between −0.1 and −1.0 VAg/AgCl mostly generated nitrophenylene films on the oxide covered aluminium, while grafting between −0.1 and −0.4 VAg/AgCl favours the growth of these films on IMPs.

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Inhibition of aluminum alloy corrosion in electrolytes by self‐assembled fluorophosphonic acid molecular layer

Cited by 18 publications

References 34 publications

Formation of Self-Assembled Anticorrosion Films on Different Metals

Formation of Self-Assembled Anticorrosion Films on Different Metals

Organic corrosion inhibitors: where are we now? A review. Part IV. Passivation and the role of mono- and diphosphonates

Electrografting of 4-Nitrobenzenediazonium Salts on Al-7075 Alloy Surfaces—The Role of Intermetallic Particles

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