The epoxy coating was cataphoretically deposited on steel and steel modified by electroplated Zn-Mn alloy of different chemical contents. The samples were immersed in 0.5 mol dm(-3) NaCl solution for 60 days. The electrochemical impedance spectroscopy (EIS) analysis showed that the values of pore resistance for epoxy coating on steel and Zn-Mn alloy with 16 at.% Mn were two orders of magnitude higher, while the capacitance values were two orders of magnitude lower than those for the epoxy coating on Zn-Mn alloy substrates with 5 and 8 at.% Mn. It was assumed that the main reason for such a difference was metallic substrate dissolution during cataphoretic deposition, due to high pH (12.9). This assumption was supported by energy dispersive X-ray spectrometry (EDS) measurements showing that the amount of released Zn in epoxy coatings decreased as Mn percent in the Zn-Mn alloys increased. In addition, Zn-Mn alloy coatings on steel, as well as bare steel, were immersed in 0.1 mol dm(-3) Na...OH solution, pH 12.9, simulating conditions during cataphoretic deposition, and polarization resistance measurement in this solution indicated that Mn inclusions in Zn-Mn alloy substrate prevent Zn dissolution in alkaline medium.
TY - JOUR
AU - Bucko, M.
AU - Mišković-Stanković, Vesna
AU - Rogan, Jelena
AU - Bajat, Jelena
PY - 2015
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3047
AB - The epoxy coating was cataphoretically deposited on steel and steel modified by electroplated Zn-Mn alloy of different chemical contents. The samples were immersed in 0.5 mol dm(-3) NaCl solution for 60 days. The electrochemical impedance spectroscopy (EIS) analysis showed that the values of pore resistance for epoxy coating on steel and Zn-Mn alloy with 16 at.% Mn were two orders of magnitude higher, while the capacitance values were two orders of magnitude lower than those for the epoxy coating on Zn-Mn alloy substrates with 5 and 8 at.% Mn. It was assumed that the main reason for such a difference was metallic substrate dissolution during cataphoretic deposition, due to high pH (12.9). This assumption was supported by energy dispersive X-ray spectrometry (EDS) measurements showing that the amount of released Zn in epoxy coatings decreased as Mn percent in the Zn-Mn alloys increased. In addition, Zn-Mn alloy coatings on steel, as well as bare steel, were immersed in 0.1 mol dm(-3) NaOH solution, pH 12.9, simulating conditions during cataphoretic deposition, and polarization resistance measurement in this solution indicated that Mn inclusions in Zn-Mn alloy substrate prevent Zn dissolution in alkaline medium.
PB - Elsevier Science Sa, Lausanne
T2 - Progress in Organic Coatings
T1 - The protective properties of epoxy coating electrodeposited on Zn-Mn alloy substrate
EP - 16
SP - 8
VL - 79
DO - 10.1016/j.porgcoat.2014.10.010
ER -
@article{
author = "Bucko, M. and Mišković-Stanković, Vesna and Rogan, Jelena and Bajat, Jelena",
year = "2015",
abstract = "The epoxy coating was cataphoretically deposited on steel and steel modified by electroplated Zn-Mn alloy of different chemical contents. The samples were immersed in 0.5 mol dm(-3) NaCl solution for 60 days. The electrochemical impedance spectroscopy (EIS) analysis showed that the values of pore resistance for epoxy coating on steel and Zn-Mn alloy with 16 at.% Mn were two orders of magnitude higher, while the capacitance values were two orders of magnitude lower than those for the epoxy coating on Zn-Mn alloy substrates with 5 and 8 at.% Mn. It was assumed that the main reason for such a difference was metallic substrate dissolution during cataphoretic deposition, due to high pH (12.9). This assumption was supported by energy dispersive X-ray spectrometry (EDS) measurements showing that the amount of released Zn in epoxy coatings decreased as Mn percent in the Zn-Mn alloys increased. In addition, Zn-Mn alloy coatings on steel, as well as bare steel, were immersed in 0.1 mol dm(-3) NaOH solution, pH 12.9, simulating conditions during cataphoretic deposition, and polarization resistance measurement in this solution indicated that Mn inclusions in Zn-Mn alloy substrate prevent Zn dissolution in alkaline medium.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Progress in Organic Coatings",
title = "The protective properties of epoxy coating electrodeposited on Zn-Mn alloy substrate",
pages = "16-8",
volume = "79",
doi = "10.1016/j.porgcoat.2014.10.010"
}
Bucko, M., Mišković-Stanković, V., Rogan, J.,& Bajat, J.. (2015). The protective properties of epoxy coating electrodeposited on Zn-Mn alloy substrate. in Progress in Organic Coatings
Elsevier Science Sa, Lausanne., 79, 8-16.
https://doi.org/10.1016/j.porgcoat.2014.10.010
Bucko M, Mišković-Stanković V, Rogan J, Bajat J. The protective properties of epoxy coating electrodeposited on Zn-Mn alloy substrate. in Progress in Organic Coatings. 2015;79:8-16.
doi:10.1016/j.porgcoat.2014.10.010 .
Bucko, M., Mišković-Stanković, Vesna, Rogan, Jelena, Bajat, Jelena, "The protective properties of epoxy coating electrodeposited on Zn-Mn alloy substrate" in Progress in Organic Coatings, 79 (2015):8-16,
https://doi.org/10.1016/j.porgcoat.2014.10.010 . .
