Electrochemical and sorption characteristics and thermal stability of epoxy coatings electrodeposited on steel modified by Zn-Co alloy
Abstract
The corrosion behaviour, transport properties and thermal stability of epoxy coatings electrodeposited on steel and steel modified by Zn-Co alloys were investigated during exposure to 3% NaCl solution. The electrochemical impedance spectroscopy (EIS), gravimetric liquid sorption measurements and thermogravimetric analysis (TGA) were used. Zn-Co alloys were electrodeposited on steel from chloride and sulphate baths, by different current densities. From the time dependence of pore resistance and coating capacitance of epoxy coating, diffusion coefficient of water through epoxy coating and thermal stability it was shown that Zn-Co sublayer obtained from chloride solution significantly improves the corrosion stability of the protective system based on epoxy coating. Almost unchanged values of pore resistance were obtained over the long period of exposure time, indicating the great stability of this protective system, due to the existence of a passive layer consisting of basic salts.
Keywords:
electrodeposition / Zn-Co alloys / epoxy coatings / corrosion / EISSource:
Progress in Organic Coatings, 2002, 45, 4, 379-387Publisher:
- Elsevier Science Sa, Lausanne
DOI: 10.1016/S0300-9440(02)00124-8
ISSN: 0300-9440
WoS: 000179438700007
Scopus: 2-s2.0-0036887967
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Bajat, Jelena AU - Mišković-Stanković, Vesna AU - Kačarević-Popović, Zorica M. PY - 2002 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/418 AB - The corrosion behaviour, transport properties and thermal stability of epoxy coatings electrodeposited on steel and steel modified by Zn-Co alloys were investigated during exposure to 3% NaCl solution. The electrochemical impedance spectroscopy (EIS), gravimetric liquid sorption measurements and thermogravimetric analysis (TGA) were used. Zn-Co alloys were electrodeposited on steel from chloride and sulphate baths, by different current densities. From the time dependence of pore resistance and coating capacitance of epoxy coating, diffusion coefficient of water through epoxy coating and thermal stability it was shown that Zn-Co sublayer obtained from chloride solution significantly improves the corrosion stability of the protective system based on epoxy coating. Almost unchanged values of pore resistance were obtained over the long period of exposure time, indicating the great stability of this protective system, due to the existence of a passive layer consisting of basic salts. PB - Elsevier Science Sa, Lausanne T2 - Progress in Organic Coatings T1 - Electrochemical and sorption characteristics and thermal stability of epoxy coatings electrodeposited on steel modified by Zn-Co alloy EP - 387 IS - 4 SP - 379 VL - 45 DO - 10.1016/S0300-9440(02)00124-8 ER -
@article{ author = "Bajat, Jelena and Mišković-Stanković, Vesna and Kačarević-Popović, Zorica M.", year = "2002", abstract = "The corrosion behaviour, transport properties and thermal stability of epoxy coatings electrodeposited on steel and steel modified by Zn-Co alloys were investigated during exposure to 3% NaCl solution. The electrochemical impedance spectroscopy (EIS), gravimetric liquid sorption measurements and thermogravimetric analysis (TGA) were used. Zn-Co alloys were electrodeposited on steel from chloride and sulphate baths, by different current densities. From the time dependence of pore resistance and coating capacitance of epoxy coating, diffusion coefficient of water through epoxy coating and thermal stability it was shown that Zn-Co sublayer obtained from chloride solution significantly improves the corrosion stability of the protective system based on epoxy coating. Almost unchanged values of pore resistance were obtained over the long period of exposure time, indicating the great stability of this protective system, due to the existence of a passive layer consisting of basic salts.", publisher = "Elsevier Science Sa, Lausanne", journal = "Progress in Organic Coatings", title = "Electrochemical and sorption characteristics and thermal stability of epoxy coatings electrodeposited on steel modified by Zn-Co alloy", pages = "387-379", number = "4", volume = "45", doi = "10.1016/S0300-9440(02)00124-8" }
Bajat, J., Mišković-Stanković, V.,& Kačarević-Popović, Z. M.. (2002). Electrochemical and sorption characteristics and thermal stability of epoxy coatings electrodeposited on steel modified by Zn-Co alloy. in Progress in Organic Coatings Elsevier Science Sa, Lausanne., 45(4), 379-387. https://doi.org/10.1016/S0300-9440(02)00124-8
Bajat J, Mišković-Stanković V, Kačarević-Popović ZM. Electrochemical and sorption characteristics and thermal stability of epoxy coatings electrodeposited on steel modified by Zn-Co alloy. in Progress in Organic Coatings. 2002;45(4):379-387. doi:10.1016/S0300-9440(02)00124-8 .
Bajat, Jelena, Mišković-Stanković, Vesna, Kačarević-Popović, Zorica M., "Electrochemical and sorption characteristics and thermal stability of epoxy coatings electrodeposited on steel modified by Zn-Co alloy" in Progress in Organic Coatings, 45, no. 4 (2002):379-387, https://doi.org/10.1016/S0300-9440(02)00124-8 . .