Abstract
In this study, sodium salts of saturated linear carboxylic acids with the general formula CH3(CH2) n−2COONa (n = 14, 18)—labeled NaC14 and NaC18—were used to inhibit the corrosion of metallic lead via the development of protective coatings for lead heritage objects. The salts were dissolved in water/ethanol 1:1 (V/V) mixture at 50 °C to increase their solubility, and the coatings were formed by immersing lead samples in the resulted solutions for 24 h. The coatings were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. A hydrophobic layer of lead carboxylates appeared to form on the metal surface, and its corrosion inhibition properties were examined by linear sweep voltammetry and electrochemical impedance spectroscopy in a corrosive solution simulating the environment of museums with uncontrolled conditions. The lead carboxylates formed a protective barrier that inhibited further lead corrosion.
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Watkinson D (2010) Preservation of metallic cultural heritage. In: Cottis B, Graham M, Lindsay R, Lyon S, Richardson T, Scantlebury D, Stott H (eds) Shreir’s corrosion, 4th edn. Elsevier Ltd., Amsterdam, pp. 3307–3340
Rocca E, Mirambet F (2007) Corrosion inhibitors for metallic artefacts: temporary protection. In: Dillmann P, Béranger G, Piccardo P, Matthiesen H (eds) Corrosion of metallic heritage artefacts: investigation, conservation and prediction of long term behavior, 1st edn. Woodhead Publishing, Cambridge, pp. 308–334
Watkinson D (2013) Conservation, corrosion science and evidence-based preservation strategies for metallic heritage artefacts. In: Dillmann P, Adriaens A, Angelini E, Watkinson D (eds) Corrosion and conservation of cultural heritage artefacts, 1st edn. Woodhead Publishing, Cambridge, pp. 9–36
Abrantes LM, Melato AI (2013) Coatings including carboxylates for the preservation of metallic heritage artefacts. In: Dillmann P, Watkinson D, Angelini E, Adriaens A (eds) Corrosion and conservation of cultural heritage artefacts, 1st edn. Woodhead Publishing, Cambridge, pp. 518–539
Rocca E, Steinmetz J (2001) Inhibition of lead corrosion with saturated linear aliphatic chain monocarboxylates of sodium. Corros Sci 43:891–902
Rocca E, Rapin C, Mirambet F (2004) Inhibition treatment of the corrosion of lead artefacts in atmospheric conditions and by acetic acid vapour: use of sodium decanoate. Corros Sci 46:653–665
De Wael K, De Keersmaecker M, Dowsett M, Walker D, Thomas PA, Adriaens A (2010) Electrochemical deposition of dodecanoate on lead in view of an environmentally safe corrosion inhibition. J Solid State Electrochem 14:407–413
De Keersmaecker M, De Wael K, Adriaens A (2012) The use of lead dodecanoate as an environmentally friendly coating to inhibit the corrosion of lead objects: comparison of three different deposition methods. Prog Org Coatings 74:1–7
De Keersmaecker M, De Wael K, Adriaens A (2013) Influence of the deposition method, temperature and deposition time on the corrosion inhibition of lead dodecanoate coatings deposited on lead surfaces. J Solid State Electrochem 17:1259–126915
De Keersmaecker M, Verbeken K, Adriaens A (2014) Lead dodecanoate coatings for the protection of lead and lead-tin alloy artifacts: two examples. Appl Surf Sci 292:149–160
De Keersmaecker M, Depla D, Verbeken K, Adriaens A (2014) Electrochemical and surface study of neutralized dodecanoic acid on a lead substrate. J Electrochem Soc 161:C126–C137
Grayburn R, Dowsett M, De Keersmaecker M, Westenbrink E, Covington JA, Crawford JB, Hand M, Walker D, Thomas PA, Banerjee D, Adriaens A (2014) Time-lapse synchrotron X-ray diffraction to monitor conservation coatings for heritage lead in atmospheres polluted with oak-emitted volatile organic compounds. Corros Sci 82:280–289
Grayburn R, Dowsett M, De Keersmaecker M, Banerjee D, Brown S, Adriaens A (2014) Towards a new method for coating heritage lead. Herit Sci 2:14
Mirambet F, Reguer S, Rocca E, Hollner S, Testemale D (2010) A complementary set of electrochemical and X-ray synchrotron techniques to determine the passivation mechanism of iron treated in a new corrosion inhibitor solution specifically developed for the preservation of metallic artefacts. Appl Phys A Mater Sci Process 99:341–349
Adriaens A, Dowsett M, Leyssens K, Van Gasse B (2007) Insights into electrolytic stabilization with weak polarization as treatment for archaeological copper objects. Anal Bioanal Chem 387:861–868
Grayburn R (2015) Spectroelectrochemical techniques for the conservation of metallic artefacts. Doctoral thesis at Ghent University, Belgium. https://biblio.ugent.be/record/5962339
Mesubi MA (1982) An infrared study of zinc, cadmiun and lead salts of some fatty acid. J Mol Struct 81:61–71
Taheri P, Hauffman T, Mol JMC, Flores JR, Hannour F, De Wit JHW, Terryn H (2011) Molecular interactions of electroadsorbed carboxylic acid and succinic anhydride monomers on zinc surfaces. J Phys Chem C 115:17054–17067
Colthup NB, Daly LH, Wiberley SE (1975) Introduction to infrared and raman spectroscopy, 2nd edn. Academic Press, New York
Gao J, Wang Y, Yang W, Li Y (2010) Synthesis and characterization of adsorbent for Pb(II)-capture by using glow discharge electrolysis plasma. Bull Kor Chem Soc 31:406–414
Taylor JA, Perry DL (1984) An x-ray photoelectron and electron energy loss study of the oxidation of lead. J Vac Sci Technol A 2:771
NIST X-ray photoelectron spectroscopy database, Version 4.1 (National Institute of Standards and Technology, Gaithersburg, 2012); http://srdata.nist.gov/xps/
Thermo scientific XPS database; http://xpssimplified.com/elements/lead.php
Phanasgaonkar A, Raja VS (2009) Influence of curing temperature, silica nanoparticles- and cerium on surface morphology and corrosion behaviour of hybrid silane coatings on mild steel. Surf Coatings Technol 203:2260–2271
Grandle JA, Taylor S (1994) Electrochemical impedance spectroscopy of coated aluminum beverage containers: part 1—determination of an optimal parameter for large sample evaluation. Corros 50:792–803
Chen L, Sumodjo PTA, Williamson JJ, Nobe K (1996) Stability of oxide surface films and pit detection on AL-2024. In: JA B (ed) Proceedings of the symposium on surface oxide films. The Electrochemical Society, Pennington, pp. 21–31
Xu A, Zhang F, Jin F, Zhang R, Luo B, Zhang T (2014) The evaluation of coating performance by analyzing the intersection of bode plots. Int J Electrochem Sci 9:5116–5125
Loveday D, Peterson P, Rodgers B (2004) Evaluation of organic coatings with electrochemical impedance spectroscopy part 1: fundamentals of electrochemical impedance spectroscopy. JCT Coatings Tech 46–52
Brug GJ, van den Eeden ALG, Sluyters-Rehbach M, Sluyters JH (1984) The analysis of electrode impedances complicated by the presence of a constant phase element. J Electroanal Chem Interfacial Electrochem 176:275–295
Amirudin A, Thierry D (1995) Application of electrochemical impedance spectroscopy to study the degradation of polymer-coated metals. Prog Org Coatings 26:1–28
Hirschorn B, Orazem ME, Tribollet B, Vivier V, Frateur I, Musiani M (2010) Determination of effective capacitance and film thickness from constant-phase-element parameters. Electrochim Acta 55:6218–6227
Hassanzadeh A (2007) Validity of dynamic electrochemical impedance spectra of some amine corrosion inhibitors in petroleum/water corrosive mixtures by Kramers-Kronig transformation. Corros Sci 49:1895–1906
Orazem ME, Tribollet B (2008) Electrochemical impedance spectroscopy. WILEY, Hoboken
Zandi Zand R, Flexer V, De Keersmaecker M, Verbeken K, Adriaens A (2016) Self-healing silane coatings of cerium salt activated nanoparticles. Mater Corros. doi:10.1002/maco.201508670
Acknowledgments
This work has been funded by WELCOME, an Erasmus Mundus Action 2 project funded by the European Commission. This article reflects the view only of the authors. The commission cannot be held responsible for any use of the information contained therein. The authors thank Nico De Roo for his assistance with the XPS measurements and Babs Lemmens for the help in the spray salt corrosion tests. Also, the authors thank Prof. Peter Dubruel and Lara Misseeuw for the contact angle measurements.
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Mohammed, E.A.A., De Keersmaecker, M., Verbeken, K. et al. Saturated long linear aliphatic chain sodium monocarboxylates for the corrosion inhibition of lead objects—an initiative towards the conservation of our lead cultural heritage. J Solid State Electrochem 21, 693–704 (2017). https://doi.org/10.1007/s10008-016-3402-5
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DOI: https://doi.org/10.1007/s10008-016-3402-5