In order to improve the protective performance of Zn coating on reinforcing steel in concrete, the electrochemical deposition of Zn-Mn coatings was conducted on steel surface. The morphology, chemical and phase compositions of Zn-Mn coatings obtained from sulfate-citrate bath were investigated in the first part of paper. In the second part, the obtained deposits were tested in solution simulating carbonated concrete, consisting of NaHCO3 and Na2CO3. Data obtained from Tafel analysis showed higher corrosion resistance for Zn-Mn alloy deposits obtained at -1700 and -1800 mV versus SCE, when compared to pure Zn deposit. Impedance spectroscopy investigations revealed that the total impedance of Zn-Mn coatings increased steadily with time, and was significantly higher as compared to pure Zn after 24 h in corrosion solution. On the contrary, for pure Zn, the impedance increased in the first 12 h, and then decreased during prolonged exposure time, which can be explained by rapid growth of non...protective white rust and the degradation of zinc coating, as was confirmed by optical microscope after 24 h of immersion in carbonated concrete pore solution.
TY - JOUR
AU - Touazi, S.
AU - Bucko, M.
AU - Makhloufi, L.
AU - Legat, A.
AU - Bajat, Jelena
PY - 2016
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3426
AB - In order to improve the protective performance of Zn coating on reinforcing steel in concrete, the electrochemical deposition of Zn-Mn coatings was conducted on steel surface. The morphology, chemical and phase compositions of Zn-Mn coatings obtained from sulfate-citrate bath were investigated in the first part of paper. In the second part, the obtained deposits were tested in solution simulating carbonated concrete, consisting of NaHCO3 and Na2CO3. Data obtained from Tafel analysis showed higher corrosion resistance for Zn-Mn alloy deposits obtained at -1700 and -1800 mV versus SCE, when compared to pure Zn deposit. Impedance spectroscopy investigations revealed that the total impedance of Zn-Mn coatings increased steadily with time, and was significantly higher as compared to pure Zn after 24 h in corrosion solution. On the contrary, for pure Zn, the impedance increased in the first 12 h, and then decreased during prolonged exposure time, which can be explained by rapid growth of nonprotective white rust and the degradation of zinc coating, as was confirmed by optical microscope after 24 h of immersion in carbonated concrete pore solution.
PB - World Scientific Publ Co Pte Ltd, Singapore
T2 - Surface Review and Letters
T1 - The electrochemical behavior of zn-mn alloy coating in carbonated concrete solution
IS - 4
VL - 23
DO - 10.1142/S0218625X1650030X
ER -
@article{
author = "Touazi, S. and Bucko, M. and Makhloufi, L. and Legat, A. and Bajat, Jelena",
year = "2016",
abstract = "In order to improve the protective performance of Zn coating on reinforcing steel in concrete, the electrochemical deposition of Zn-Mn coatings was conducted on steel surface. The morphology, chemical and phase compositions of Zn-Mn coatings obtained from sulfate-citrate bath were investigated in the first part of paper. In the second part, the obtained deposits were tested in solution simulating carbonated concrete, consisting of NaHCO3 and Na2CO3. Data obtained from Tafel analysis showed higher corrosion resistance for Zn-Mn alloy deposits obtained at -1700 and -1800 mV versus SCE, when compared to pure Zn deposit. Impedance spectroscopy investigations revealed that the total impedance of Zn-Mn coatings increased steadily with time, and was significantly higher as compared to pure Zn after 24 h in corrosion solution. On the contrary, for pure Zn, the impedance increased in the first 12 h, and then decreased during prolonged exposure time, which can be explained by rapid growth of nonprotective white rust and the degradation of zinc coating, as was confirmed by optical microscope after 24 h of immersion in carbonated concrete pore solution.",
publisher = "World Scientific Publ Co Pte Ltd, Singapore",
journal = "Surface Review and Letters",
title = "The electrochemical behavior of zn-mn alloy coating in carbonated concrete solution",
number = "4",
volume = "23",
doi = "10.1142/S0218625X1650030X"
}
Touazi, S., Bucko, M., Makhloufi, L., Legat, A.,& Bajat, J.. (2016). The electrochemical behavior of zn-mn alloy coating in carbonated concrete solution. in Surface Review and Letters
World Scientific Publ Co Pte Ltd, Singapore., 23(4).
https://doi.org/10.1142/S0218625X1650030X
Touazi S, Bucko M, Makhloufi L, Legat A, Bajat J. The electrochemical behavior of zn-mn alloy coating in carbonated concrete solution. in Surface Review and Letters. 2016;23(4).
doi:10.1142/S0218625X1650030X .
Touazi, S., Bucko, M., Makhloufi, L., Legat, A., Bajat, Jelena, "The electrochemical behavior of zn-mn alloy coating in carbonated concrete solution" in Surface Review and Letters, 23, no. 4 (2016),
https://doi.org/10.1142/S0218625X1650030X . .
