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The Use of a Saturated Long Carbon Chain Sodium Monocarboxylate for the Corrosion Inhibition of Lead Objects in Atmospheric Conditions and in Acetic Acid Corrosive Solutions

Department of Chemistry, Ghent University, Krijgslaan 281 (S12), Ghent 9000, Belgium
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Coatings 2018, 8(4), 118; https://doi.org/10.3390/coatings8040118
Received: 8 January 2018 / Revised: 15 March 2018 / Accepted: 18 March 2018 / Published: 23 March 2018
(This article belongs to the Special Issue Communications from TechnoHeritage 2017)
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Abstract

In this paper, a saturated long carbon chain sodium monocarboxylate containing 18 carbons—labeled NaC18—was used for the formation of a lead carboxylate coating to inhibit the corrosion of lead in atmospheric conditions and in acetic acid corrosive solutions. The effect of stirring of the coating solution during the coating process on the inhibition efficiency was studied. The coating was characterized by scanning electron microscopy and Fourier transform infrared spectroscopy which have confirmed a formation of lead carboxylate layer on the lead metal surface. The corrosion inhibition properties of the coating were tested using linear sweep voltammetry and electrochemical impedance spectroscopy in a solution simulating the atmospheric conditions and in an acetic acid corrosive solution. Results show that the lead carboxylate forms a protective barrier that inhibits corrosion of lead in atmospheric conditions and in acetic acid corrosive solutions. View Full-Text
Keywords: lead; coating; lead preservation; corrosion; lead carboxylate lead; coating; lead preservation; corrosion; lead carboxylate
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Mohammed, E.A.A.; Adriaens, A. The Use of a Saturated Long Carbon Chain Sodium Monocarboxylate for the Corrosion Inhibition of Lead Objects in Atmospheric Conditions and in Acetic Acid Corrosive Solutions. Coatings 2018, 8, 118.

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