Adhesion characteristics and corrosion stability of epoxy coatings electrodeposited on phosphated hot-dip galvanized steel
Само за регистроване кориснике
2008
Чланак у часопису (Објављена верзија)
,
Elsevier
Метаподаци
Приказ свих података о документуАпстракт
The influence of hot-dip galvanized steel (HDG) surface pretreatment with phosphate coatings on the corrosion stability and adhesion characteristics of epoxy coatings electrodeposited on HDG steel was investigated. Phosphate coatings were deposited on hot-dip galvanized steel from baths with different concentrations of NaF (0.1, 0.5 and 1.0 g dm-3) and at different temperatures (50, 65 and 80 °C). The influence of fluoride ion concentration in the phosphating bath, as well as the deposition temperature of the bath, on the adhesion characteristics and corrosion stability of epoxy coatings on phosphated HDG steel was investigated. The dry and wet adhesions were measured by a direct pull-off standardized procedure, as well as indirectly by NMP test, while corrosion stability was investigated by electrochemical impedance spectroscopy (EIS). It was shown that under dry testing conditions all the samples exhibited very good adhesion. However, the different trends of adhesion loss of differen...t protective systems during exposure to corrosive agent (3% NaCl solution) were observed. The lowest adhesion values were obtained for epoxy coating on hot-dip galvanized steel, while the phosphate pretreatments significantly increase the adhesion of epoxy coatings. The highest values of adhesion strength were obtained for epoxy coating on HDG steel modified by phosphate coating deposited at 65 °C with 0.5 g dm-3 NaF in the phosphating bath. EIS measurements in 3% NaCl solution are in accordance with adhesion measurements, i.e. greater values of charge-transfer resistance and smaller values of double-layer capacitance were obtained, as compared to other protective systems.
Кључне речи:
Adhesion / Electrochemical impedance spectroscopy / Phosphating / Hot-dip galvanized steel / Epoxy coatingsИзвор:
Progress in Organic Coatings, 2008, 63, 2, 201-208Издавач:
- Elsevier
Финансирање / пројекти:
- Електрохемијске карактеристике оксидних и полимерних превлака на модификованим површинама метала (RS-MESTD-MPN2006-2010-142061)
DOI: 10.1016/j.porgcoat.2008.06.002
ISSN: 0300-9440
WoS: 000259069200009
Scopus: 2-s2.0-48649083606
Институција/група
IHTMTY - JOUR AU - Bajat, Jelena AU - Mišković-Stanković, Vesna AU - Popić, Jovan AU - Dražić, Dragutin M. PY - 2008 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4117 AB - The influence of hot-dip galvanized steel (HDG) surface pretreatment with phosphate coatings on the corrosion stability and adhesion characteristics of epoxy coatings electrodeposited on HDG steel was investigated. Phosphate coatings were deposited on hot-dip galvanized steel from baths with different concentrations of NaF (0.1, 0.5 and 1.0 g dm-3) and at different temperatures (50, 65 and 80 °C). The influence of fluoride ion concentration in the phosphating bath, as well as the deposition temperature of the bath, on the adhesion characteristics and corrosion stability of epoxy coatings on phosphated HDG steel was investigated. The dry and wet adhesions were measured by a direct pull-off standardized procedure, as well as indirectly by NMP test, while corrosion stability was investigated by electrochemical impedance spectroscopy (EIS). It was shown that under dry testing conditions all the samples exhibited very good adhesion. However, the different trends of adhesion loss of different protective systems during exposure to corrosive agent (3% NaCl solution) were observed. The lowest adhesion values were obtained for epoxy coating on hot-dip galvanized steel, while the phosphate pretreatments significantly increase the adhesion of epoxy coatings. The highest values of adhesion strength were obtained for epoxy coating on HDG steel modified by phosphate coating deposited at 65 °C with 0.5 g dm-3 NaF in the phosphating bath. EIS measurements in 3% NaCl solution are in accordance with adhesion measurements, i.e. greater values of charge-transfer resistance and smaller values of double-layer capacitance were obtained, as compared to other protective systems. PB - Elsevier T2 - Progress in Organic Coatings T1 - Adhesion characteristics and corrosion stability of epoxy coatings electrodeposited on phosphated hot-dip galvanized steel VL - 63 IS - 2 SP - 201 EP - 208 DO - 10.1016/j.porgcoat.2008.06.002 ER -
@article{ author = "Bajat, Jelena and Mišković-Stanković, Vesna and Popić, Jovan and Dražić, Dragutin M.", year = "2008", abstract = "The influence of hot-dip galvanized steel (HDG) surface pretreatment with phosphate coatings on the corrosion stability and adhesion characteristics of epoxy coatings electrodeposited on HDG steel was investigated. Phosphate coatings were deposited on hot-dip galvanized steel from baths with different concentrations of NaF (0.1, 0.5 and 1.0 g dm-3) and at different temperatures (50, 65 and 80 °C). The influence of fluoride ion concentration in the phosphating bath, as well as the deposition temperature of the bath, on the adhesion characteristics and corrosion stability of epoxy coatings on phosphated HDG steel was investigated. The dry and wet adhesions were measured by a direct pull-off standardized procedure, as well as indirectly by NMP test, while corrosion stability was investigated by electrochemical impedance spectroscopy (EIS). It was shown that under dry testing conditions all the samples exhibited very good adhesion. However, the different trends of adhesion loss of different protective systems during exposure to corrosive agent (3% NaCl solution) were observed. The lowest adhesion values were obtained for epoxy coating on hot-dip galvanized steel, while the phosphate pretreatments significantly increase the adhesion of epoxy coatings. The highest values of adhesion strength were obtained for epoxy coating on HDG steel modified by phosphate coating deposited at 65 °C with 0.5 g dm-3 NaF in the phosphating bath. EIS measurements in 3% NaCl solution are in accordance with adhesion measurements, i.e. greater values of charge-transfer resistance and smaller values of double-layer capacitance were obtained, as compared to other protective systems.", publisher = "Elsevier", journal = "Progress in Organic Coatings", title = "Adhesion characteristics and corrosion stability of epoxy coatings electrodeposited on phosphated hot-dip galvanized steel", volume = "63", number = "2", pages = "201-208", doi = "10.1016/j.porgcoat.2008.06.002" }
Bajat, J., Mišković-Stanković, V., Popić, J.,& Dražić, D. M.. (2008). Adhesion characteristics and corrosion stability of epoxy coatings electrodeposited on phosphated hot-dip galvanized steel. in Progress in Organic Coatings Elsevier., 63(2), 201-208. https://doi.org/10.1016/j.porgcoat.2008.06.002
Bajat J, Mišković-Stanković V, Popić J, Dražić DM. Adhesion characteristics and corrosion stability of epoxy coatings electrodeposited on phosphated hot-dip galvanized steel. in Progress in Organic Coatings. 2008;63(2):201-208. doi:10.1016/j.porgcoat.2008.06.002 .
Bajat, Jelena, Mišković-Stanković, Vesna, Popić, Jovan, Dražić, Dragutin M., "Adhesion characteristics and corrosion stability of epoxy coatings electrodeposited on phosphated hot-dip galvanized steel" in Progress in Organic Coatings, 63, no. 2 (2008):201-208, https://doi.org/10.1016/j.porgcoat.2008.06.002 . .