Comparative analysis of corrosion resistance of Zinc and Zn-Al-Mg coatings on carbon steel
DOI:
https://doi.org/10.33448/rsd-v10i1.11973Keywords:
Coated Steel; Corrosion; Magnesium; Microstructure.Abstract
One of the main ways to protect steel against corrosion is by the galvanizing process. This process has been continuously developed and its first optimization was performed by the addition of Aluminum in the coating. As a result, Zn-5wt.%Al and 55wt.%Al-Zn coatings were developed. Recently, the search for increased corrosion resistance led to the development of zinc coating with the addition of magnesium and aluminum. In this work, a comparative study of the corrosion resistance of zinc coated steel and Zn-2wt.%Al-1wt.%Mg alloy coated steel was performed. Samples were exposed to immersion corrosion tests in 0.1 M NaCl electrolyte and were analyzed by using SEM, XDR and EIS. On zinc-coated steel, the steel substrate was attacked after 48 days of immersion, while on Zn-2wt.%Al-1wt.%Mg coated steel, the steel substrate showed corrosive process after 90-day of immersion. The corrosion product formed from Zn-2wt.%Al-1wt.%Mg coated steel is the main cause of its better corrosion resistance compared to zinc coated steel.
References
Chen, S., Yan, F., Xue, F., Yang, L., & Liu, J., (2010). X-ray photoelectron spectroscopy investigations of zinc–magnesium alloy coated steel, Materials, Chemistry and Physics, 124, 472–476.
Diler, E., Lescop, B., Rioual, S., Nguyen Vien, G., Thierry, D., & Rouvellou, B., (2014). Initial formation of corrosion products on pure zinc and MgZn2 examinated by XPS, Corrosion Science, 79, 83–88.
Diler, E., Rioual, S., Lescop, B., Thierry, D., & Rouvellou, B., (2012). Chemistry of corrosion products of Zn and MgZn pure phases under atmospheric conditions, Corrosion Science, 65, 178–186.
Duchoslav, J., Arndt, M., Steinberger, R., Keppert, T., Luckeneder, G., Stellnberger, K. H., Hagler, J., Riener, C. K., Angeli, G., & Stifter, D., (2014). Nanoscopic view on the initial stages of corrosion of hot dip galvanized Zn–Mg–Al coatings, Corrosion Science, 83, 327–334.
Dutta, M., Halder, A. K., & Singh, S. B., (2010). Morphology and properties of hot dip Zn–Mg and Zn–Mg–Al alloy coatings on steel sheet, Surface and Coating Technology, 205, 2578–2584.
Elvins, J., Spittle, J. A., Sullivan, J. H., & Worsley, D. A., (2008). The effect of magnesium additions on the microstructure and cut edge corrosion resistance of zinc aluminium alloy galvanized steel, Corrosion Science, 50, 1650–1658.
Frankel, G. S., (1998). Pitting corrosion of metals: a review of the critical factors, Journal of the Electrochemical Society, 145, 2186–2198.
Hosking, N. C., Ström, M. A., Shipway, P. H., & Rudd, C. D., (2007). Corrosion resistance of zinc–magnesium coated steel, Corrosion Science, 49, 3669–3695.
Kairy, S. K., Rometsch, P. A., Diao, K., Nie, J. F., Davies, C. H. J., & Birbilis, N., (2016). Exploring the electrochemistry of 6xxx series aluminum alloys as a function of Si to Mg ratio, Cu content, ageing conditions and microstructure, Electrochimica Acta, 190, 92–103.
Klemm, S. O., Schauer, J. C., Schuhmacher, B., & Hassel, A. W., (2011). High through put electrochemical screening and dissolution monitoring of Mg–Zn material libraries, Electrochimica Acta, 56, 9627–9636.
Krieg, R., Vimalanandan, A., & Rohwerder, M., (2014). Corrosion of zinc and Zn-Mg alloys with varying microstructures and magnesium contents, Journal of the Electrochemical Society, 161, C156–C161.
Le Bozec, N., Thierry, D., Rohwerder, M., Persson, D., Luckeneder, G., & Luwem, L., (2013). Effect of carbon dioxide on the atmospheric corrosion of Zn–Mg–Al coated steel, Corrosion Science, 74, 379–386.
Li, B., Dong, A., Zhu, G., Chu, S., Qian, H., Hu, C., Sun, B., & Wang, J., (2012). Investigation of the corrosion behaviors of continuously hot-dip galvanizing Zn–Mg coating, Surface and Coating Technology, 206, 3989–3999.
Persson, D., Thierry, D., LeBozec, N., & Prosek, T., (2013). In situ infrared reflection spectroscopy studies of the initial atmospheric corrosion of Zn–Al–Mg coated steel, Corrosion Science, 72, 54–63.
Prosek, T., Hagströmb, J., Persson, D., Fuertes, N., Lindberg, F., Chocholaty, O., Taxén, C., Serák, J., & Thierry, D., (2016). Effect of the microstructure of Zn-Al and Zn-Al-Mg model alloys on corrosion stability, Corrosion Science, 110, 71–81.
Prosek, T., Larché, N., Vlot, M., Goodwin, F., & Thierry, D., (2010). Corrosion performance of Zn–Al–Mg coatings in open and confined zones in conditions simulating automotive applications, Materials and Corrosion, 61, 412–420.
Prosek, T., Nazarov, A., Bexell, U., Thierry, D., & Serak, J., (2008). Corrosion mechanism of model zinc–magnesium alloys in atmospheric conditions, Corrosion Science, 50, 2216–2231.
Rodriguez, J., Chenoy, L., Roobroeck, A., Godet, S., & Olivier, M., (2016). Effect of the electrolyte pH on the corrosion mechanisms of Zn-Mg coated steel, Corrosion Science, 108, 47–59.
Salgueiro, M., Allély, C., Ogle, K., & Volovitch, P., (2015). Corrosion mechanisms of Zn(Mg, Al) coated steel in accelerated tests and natural exposure: 1. The role of electrolyte composition in the nature of corrosion products and relative corrosion rate, Corrosion Science, 90, 472–481.
Salgueiro, M., Allély, C., Ogle, K., & Volovitch, P., (2015). Corrosion mechanisms of Zn(Mg,Al) coated steel: the effect of HCO3− and NH4+ ions on the intrinsic reactivity of the coating, Electrochimica Acta, 153, 159–169.
Schuerz, S., Fleischanderl, M., Luckeneder, G. H., Preis, K., Haunschmied, T., Mori, G., & Kneissl, A. C., (2009). Corrosion behaviour of Zn–Al–Mg coated steel sheet in sodium chloride-containing environment, Corrosion Science, 51, 2355–2363.
Schürz, S., Luckeneder, G. H., Fleischanderl, M., Mack, P., Gsaller, H., Kneissl, A. C., & Mori, G., (2010). Chemistry of corrosion products on Zn–Al–Mg alloy coated steel, Corrosion Science 52, 3271–3279.
Thébault, F., Vuillemin, B., Oltra, R., Allely, C., Ogle, K., & Heintz, O., (2015). Influence of magnesium content on the corrosion resistance of the cut-edges of Zn–Mg-coated steel, Corrosion Science, 97, 100–106.
Vimalanandan, A., Bashir, A., & Rohwerder, M., (2014). Zn–Mg and Zn–Mg–Al alloys for improved corrosion protection of steel: some new aspects, Materials and Corrosion, 65, 392–400.
Volovitch, P., Allely, C., & Ogle, K., (2009). Understanding corrosion via corrosion product characterization: I. Case study of the role of Mg alloying in Zn–Mg coating on steel, Corrosion Science, 51, 1251–1262.
Yao, C., Lv, H., Zhu, T., Zheng, W., Yuan, X., & Gao, W., (2016). Effect of Mg content on microstructure and corrosion behavior of hot dipped Zn-Al-Mg coatings, Journal of Alloys and Compounds, 670, 239-248.
Yoo, J. D., Ogle, K., & Volovitch P., (2014). The effect of synthetic zinc corrosion products on corrosion of electrogalvanized steel. II. Zinc reactivity and galvanic coupling zinc/steel in presence of zinc corrosion products, Corrosion Science, 83, 32–37.
Zander, D., Pieper, C., & Köster, U. (2007). Influence of the casting method on microstructure and corrosion of AZ91 and AM50, in: K.U. Kainer (Ed.), Proceedings of the 7th International Conference on Magnesium Alloys and Their Applications, Wiley-VCH Verlag, Weinheim, 757–762.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2021 Alberto Nei Carvalho Costa; Gilmar Clemente Silva; Elivelton Alves Ferreira; Roberto Zenhei Nakazato
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
1) Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2) Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3) Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.