Corrosion stability of cerium-doped cataphoretic epoxy coatings on AA6060 alloy
Samo za registrovane korisnike
2016
Autori
Jegdić, Bore V.Živković, Ljiljana
Popić, Jovan P.
Rogan, Jelena R.
Bajat, Jelena B.
Mišković-Stanković, Vesna B.
Članak u časopisu (Objavljena verzija)
,
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
In this study, corrosion protection efficiency of undoped epoxy and epoxy coating doped with cerium on aluminum alloy AA6060 is evaluated over prolonged exposure to 3wt% NaCl solution by electrochemical impedance spectroscopy (EIS). Different amounts of Ce(NO3)(3) are added into the epoxy suspension used for the cataphoretic deposition. Suspension stability is characterized by zeta potential and particle size values. Water content and thermal stability of the coatings were determined by thermogravimetric analysis. Insufficient corrosion stability, very close to that of undoped epoxy, is revealed for the coating with 1mM Ce. Higher cerium doping contributes to a significant increase in corrosion stability (2-3 orders of magnitude greater charge-transfer resistance). Epoxy coating doped with 5mM Ce displays a pronounced self-healing ability and the best corrosion protection and adhesion, owing to evenly distributed cerium precipitates on the aluminum surface. In the case of 10mM Ce-doped... coating, the formation of Ce clusters and higher porosity causes a certain lowering of the protective ability. EIS measurements on epoxy coating with artificial defect confirm these findings.
Ključne reči:
aluminum / cataphoretic deposition / cerium doping / corrosion / EIS / epoxy coatingIzvor:
Materials and Corrosion (Werkstoffe und Korrosion), 2016, 67, 11, 1173-1184Finansiranje / projekti:
- Sinteza, procesiranje i karakterizacija nanostrukturnih materijala za primenu u oblasti energije, mehaničkog inženjerstva, zaštite životne stredine i biomedicine (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
- Sinteza, razvoj tehnologija dobijanja i primena nanostrukturnih multifunkcionalnih materijala definisanih svojstava (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45019)
DOI: 10.1002/maco.201608827
ISSN: 0947-5117; 1521-4176
WoS: 000387145500006
Scopus: 2-s2.0-84963527532
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Jegdić, Bore V. AU - Živković, Ljiljana AU - Popić, Jovan P. AU - Rogan, Jelena R. AU - Bajat, Jelena B. AU - Mišković-Stanković, Vesna B. PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1294 AB - In this study, corrosion protection efficiency of undoped epoxy and epoxy coating doped with cerium on aluminum alloy AA6060 is evaluated over prolonged exposure to 3wt% NaCl solution by electrochemical impedance spectroscopy (EIS). Different amounts of Ce(NO3)(3) are added into the epoxy suspension used for the cataphoretic deposition. Suspension stability is characterized by zeta potential and particle size values. Water content and thermal stability of the coatings were determined by thermogravimetric analysis. Insufficient corrosion stability, very close to that of undoped epoxy, is revealed for the coating with 1mM Ce. Higher cerium doping contributes to a significant increase in corrosion stability (2-3 orders of magnitude greater charge-transfer resistance). Epoxy coating doped with 5mM Ce displays a pronounced self-healing ability and the best corrosion protection and adhesion, owing to evenly distributed cerium precipitates on the aluminum surface. In the case of 10mM Ce-doped coating, the formation of Ce clusters and higher porosity causes a certain lowering of the protective ability. EIS measurements on epoxy coating with artificial defect confirm these findings. T2 - Materials and Corrosion (Werkstoffe und Korrosion) T1 - Corrosion stability of cerium-doped cataphoretic epoxy coatings on AA6060 alloy VL - 67 IS - 11 SP - 1173 EP - 1184 DO - 10.1002/maco.201608827 ER -
@article{ author = "Jegdić, Bore V. and Živković, Ljiljana and Popić, Jovan P. and Rogan, Jelena R. and Bajat, Jelena B. and Mišković-Stanković, Vesna B.", year = "2016", abstract = "In this study, corrosion protection efficiency of undoped epoxy and epoxy coating doped with cerium on aluminum alloy AA6060 is evaluated over prolonged exposure to 3wt% NaCl solution by electrochemical impedance spectroscopy (EIS). Different amounts of Ce(NO3)(3) are added into the epoxy suspension used for the cataphoretic deposition. Suspension stability is characterized by zeta potential and particle size values. Water content and thermal stability of the coatings were determined by thermogravimetric analysis. Insufficient corrosion stability, very close to that of undoped epoxy, is revealed for the coating with 1mM Ce. Higher cerium doping contributes to a significant increase in corrosion stability (2-3 orders of magnitude greater charge-transfer resistance). Epoxy coating doped with 5mM Ce displays a pronounced self-healing ability and the best corrosion protection and adhesion, owing to evenly distributed cerium precipitates on the aluminum surface. In the case of 10mM Ce-doped coating, the formation of Ce clusters and higher porosity causes a certain lowering of the protective ability. EIS measurements on epoxy coating with artificial defect confirm these findings.", journal = "Materials and Corrosion (Werkstoffe und Korrosion)", title = "Corrosion stability of cerium-doped cataphoretic epoxy coatings on AA6060 alloy", volume = "67", number = "11", pages = "1173-1184", doi = "10.1002/maco.201608827" }
Jegdić, B. V., Živković, L., Popić, J. P., Rogan, J. R., Bajat, J. B.,& Mišković-Stanković, V. B.. (2016). Corrosion stability of cerium-doped cataphoretic epoxy coatings on AA6060 alloy. in Materials and Corrosion (Werkstoffe und Korrosion), 67(11), 1173-1184. https://doi.org/10.1002/maco.201608827
Jegdić BV, Živković L, Popić JP, Rogan JR, Bajat JB, Mišković-Stanković VB. Corrosion stability of cerium-doped cataphoretic epoxy coatings on AA6060 alloy. in Materials and Corrosion (Werkstoffe und Korrosion). 2016;67(11):1173-1184. doi:10.1002/maco.201608827 .
Jegdić, Bore V., Živković, Ljiljana, Popić, Jovan P., Rogan, Jelena R., Bajat, Jelena B., Mišković-Stanković, Vesna B., "Corrosion stability of cerium-doped cataphoretic epoxy coatings on AA6060 alloy" in Materials and Corrosion (Werkstoffe und Korrosion), 67, no. 11 (2016):1173-1184, https://doi.org/10.1002/maco.201608827 . .