The study of corrosion stability of organic epoxy protective coatings on aluminium and modified aluminium surfaces
Apstrakt
Epoxy coatings were formed by cathodic electrodeposition of an epoxy resin on aluminium and modified aluminium surfaces (phosphatized, chromatized-phosphatized and anodized aluminium) using a constant voltage method (resin concentration 10 wt.%, temperature 27 degrees C, applied voltage 250 V). The corrosion behavior of these coatings was investigated during exposure to 3% NaCl using electrochemical impedance spectroscopy (EIS) and polarization measurements. From the dependence of resistance, capacitance and relative permittivity of the coating, obtained from EIS, on the rate of hydrogen evolution reaction in the electrodeposition bath, obtained from polarization curves, it can be observed that the epoxy coating on aluminium and modified aluminium surfaces is a good barrier against the transport of corrosive agents. The time corresponding to contact between electrolyte and aluminium surface under the coating is greater in the case of surface modification by chromato-phosphatized and an...odized aluminium than in the case of phosphatize one.
Ključne reči:
aluminium / corrosion / electrodeposition / epoxy coatings / EISIzvor:
Journal of the Brazilian Chemical Society, 2005, 16, 1, 98-102
DOI: 10.1590/S0103-50532005000100015
ISSN: 0103-5053
WoS: 000227616100014
Scopus: 2-s2.0-17544379158
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Lazarević, Zorica Ž. AU - Mišković-Stanković, Vesna B. AU - Kačarević-Popović, Zorica M. AU - Dražić, D. M. PY - 2005 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2867 AB - Epoxy coatings were formed by cathodic electrodeposition of an epoxy resin on aluminium and modified aluminium surfaces (phosphatized, chromatized-phosphatized and anodized aluminium) using a constant voltage method (resin concentration 10 wt.%, temperature 27 degrees C, applied voltage 250 V). The corrosion behavior of these coatings was investigated during exposure to 3% NaCl using electrochemical impedance spectroscopy (EIS) and polarization measurements. From the dependence of resistance, capacitance and relative permittivity of the coating, obtained from EIS, on the rate of hydrogen evolution reaction in the electrodeposition bath, obtained from polarization curves, it can be observed that the epoxy coating on aluminium and modified aluminium surfaces is a good barrier against the transport of corrosive agents. The time corresponding to contact between electrolyte and aluminium surface under the coating is greater in the case of surface modification by chromato-phosphatized and anodized aluminium than in the case of phosphatize one. T2 - Journal of the Brazilian Chemical Society T1 - The study of corrosion stability of organic epoxy protective coatings on aluminium and modified aluminium surfaces VL - 16 IS - 1 SP - 98 EP - 102 DO - 10.1590/S0103-50532005000100015 ER -
@article{ author = "Lazarević, Zorica Ž. and Mišković-Stanković, Vesna B. and Kačarević-Popović, Zorica M. and Dražić, D. M.", year = "2005", abstract = "Epoxy coatings were formed by cathodic electrodeposition of an epoxy resin on aluminium and modified aluminium surfaces (phosphatized, chromatized-phosphatized and anodized aluminium) using a constant voltage method (resin concentration 10 wt.%, temperature 27 degrees C, applied voltage 250 V). The corrosion behavior of these coatings was investigated during exposure to 3% NaCl using electrochemical impedance spectroscopy (EIS) and polarization measurements. From the dependence of resistance, capacitance and relative permittivity of the coating, obtained from EIS, on the rate of hydrogen evolution reaction in the electrodeposition bath, obtained from polarization curves, it can be observed that the epoxy coating on aluminium and modified aluminium surfaces is a good barrier against the transport of corrosive agents. The time corresponding to contact between electrolyte and aluminium surface under the coating is greater in the case of surface modification by chromato-phosphatized and anodized aluminium than in the case of phosphatize one.", journal = "Journal of the Brazilian Chemical Society", title = "The study of corrosion stability of organic epoxy protective coatings on aluminium and modified aluminium surfaces", volume = "16", number = "1", pages = "98-102", doi = "10.1590/S0103-50532005000100015" }
Lazarević, Z. Ž., Mišković-Stanković, V. B., Kačarević-Popović, Z. M.,& Dražić, D. M.. (2005). The study of corrosion stability of organic epoxy protective coatings on aluminium and modified aluminium surfaces. in Journal of the Brazilian Chemical Society, 16(1), 98-102. https://doi.org/10.1590/S0103-50532005000100015
Lazarević ZŽ, Mišković-Stanković VB, Kačarević-Popović ZM, Dražić DM. The study of corrosion stability of organic epoxy protective coatings on aluminium and modified aluminium surfaces. in Journal of the Brazilian Chemical Society. 2005;16(1):98-102. doi:10.1590/S0103-50532005000100015 .
Lazarević, Zorica Ž., Mišković-Stanković, Vesna B., Kačarević-Popović, Zorica M., Dražić, D. M., "The study of corrosion stability of organic epoxy protective coatings on aluminium and modified aluminium surfaces" in Journal of the Brazilian Chemical Society, 16, no. 1 (2005):98-102, https://doi.org/10.1590/S0103-50532005000100015 . .