Protective ability and impedance response of sol-gel reversely transformed ceria conversion coating on aluminium
Samo za registrovane korisnike
2016
Autori
Gulicovski, JelenaBajat, Jelena
Jokić, Bojan
Panić, V.
Mišković-Stanković, Vesna
Milonjić, Slobodan K.
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Ceria coating is formed on Al from the ceria sol prepared exclusively by forced hydrolysis of Ce(NO3)(4), in order to test their ability to protect Al from corrosion. The characterization of sol-gel-processed ceria coating and coating/Al assembly brings new issues on Al corrosion and protection caused by unique properties of the sol-gel coating. The corrosion behaviour of bare Al and Al/CeO2 is investigated by the electrochemical impedance spectroscopy (EIS) during the exposure to NaCl aqueous solution. The morphology and composition of the samples are examined by scanning electron microscopy and energy dispersive spectroscopy. EIS data showed greater corrosion resistance of CeO2-coated aluminium in comparison to bare Al at long exposure times. CeO2 coating does not hinder completely the corrosion processes on Al. The Al beneath CeO2 coating is subjected to intrinsic formation of a uniform protective coating/Al interphase, cross-linked by AlO(OH) fibre-like structures. They appear crea...ted by corrosive medium from the coating reversely gelled by NaCl solution. As the fibre network is created during exposure, Al becomes better protected than by spontaneous formation of porous passive layer of Al(OH)(3) on bare aluminium. Sol-gel ceria coatings thus improve corrosion resistance of aluminium during prolonged exposure to corrosive medium.
Ključne reči:
Corrosion protection / Forced hydrolysis / AlO(OH) fibre network / Gel/solid phase transition / Coating/substrate interphaseIzvor:
Journal of Solid State Electrochemistry, 2016, 20, 1, 293-303Izdavač:
- Springer, New York
Finansiranje / projekti:
- Sinteza, procesiranje i karakterizacija nanostrukturnih materijala za primenu u oblasti energije, mehaničkog inženjerstva, zaštite životne stredine i biomedicine (RS-45012)
- Sinteza, razvoj tehnologija dobijanja i primena nanostrukturnih multifunkcionalnih materijala definisanih svojstava (RS-45019)
- Nov pristup dizajniranju materijala za konverziju i skladištenje energije (RS-172060)
DOI: 10.1007/s10008-015-3040-3
ISSN: 1432-8488
WoS: 000368113400030
Scopus: 2-s2.0-84953350487
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Gulicovski, Jelena AU - Bajat, Jelena AU - Jokić, Bojan AU - Panić, V. AU - Mišković-Stanković, Vesna AU - Milonjić, Slobodan K. PY - 2016 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3375 AB - Ceria coating is formed on Al from the ceria sol prepared exclusively by forced hydrolysis of Ce(NO3)(4), in order to test their ability to protect Al from corrosion. The characterization of sol-gel-processed ceria coating and coating/Al assembly brings new issues on Al corrosion and protection caused by unique properties of the sol-gel coating. The corrosion behaviour of bare Al and Al/CeO2 is investigated by the electrochemical impedance spectroscopy (EIS) during the exposure to NaCl aqueous solution. The morphology and composition of the samples are examined by scanning electron microscopy and energy dispersive spectroscopy. EIS data showed greater corrosion resistance of CeO2-coated aluminium in comparison to bare Al at long exposure times. CeO2 coating does not hinder completely the corrosion processes on Al. The Al beneath CeO2 coating is subjected to intrinsic formation of a uniform protective coating/Al interphase, cross-linked by AlO(OH) fibre-like structures. They appear created by corrosive medium from the coating reversely gelled by NaCl solution. As the fibre network is created during exposure, Al becomes better protected than by spontaneous formation of porous passive layer of Al(OH)(3) on bare aluminium. Sol-gel ceria coatings thus improve corrosion resistance of aluminium during prolonged exposure to corrosive medium. PB - Springer, New York T2 - Journal of Solid State Electrochemistry T1 - Protective ability and impedance response of sol-gel reversely transformed ceria conversion coating on aluminium EP - 303 IS - 1 SP - 293 VL - 20 DO - 10.1007/s10008-015-3040-3 ER -
@article{ author = "Gulicovski, Jelena and Bajat, Jelena and Jokić, Bojan and Panić, V. and Mišković-Stanković, Vesna and Milonjić, Slobodan K.", year = "2016", abstract = "Ceria coating is formed on Al from the ceria sol prepared exclusively by forced hydrolysis of Ce(NO3)(4), in order to test their ability to protect Al from corrosion. The characterization of sol-gel-processed ceria coating and coating/Al assembly brings new issues on Al corrosion and protection caused by unique properties of the sol-gel coating. The corrosion behaviour of bare Al and Al/CeO2 is investigated by the electrochemical impedance spectroscopy (EIS) during the exposure to NaCl aqueous solution. The morphology and composition of the samples are examined by scanning electron microscopy and energy dispersive spectroscopy. EIS data showed greater corrosion resistance of CeO2-coated aluminium in comparison to bare Al at long exposure times. CeO2 coating does not hinder completely the corrosion processes on Al. The Al beneath CeO2 coating is subjected to intrinsic formation of a uniform protective coating/Al interphase, cross-linked by AlO(OH) fibre-like structures. They appear created by corrosive medium from the coating reversely gelled by NaCl solution. As the fibre network is created during exposure, Al becomes better protected than by spontaneous formation of porous passive layer of Al(OH)(3) on bare aluminium. Sol-gel ceria coatings thus improve corrosion resistance of aluminium during prolonged exposure to corrosive medium.", publisher = "Springer, New York", journal = "Journal of Solid State Electrochemistry", title = "Protective ability and impedance response of sol-gel reversely transformed ceria conversion coating on aluminium", pages = "303-293", number = "1", volume = "20", doi = "10.1007/s10008-015-3040-3" }
Gulicovski, J., Bajat, J., Jokić, B., Panić, V., Mišković-Stanković, V.,& Milonjić, S. K.. (2016). Protective ability and impedance response of sol-gel reversely transformed ceria conversion coating on aluminium. in Journal of Solid State Electrochemistry Springer, New York., 20(1), 293-303. https://doi.org/10.1007/s10008-015-3040-3
Gulicovski J, Bajat J, Jokić B, Panić V, Mišković-Stanković V, Milonjić SK. Protective ability and impedance response of sol-gel reversely transformed ceria conversion coating on aluminium. in Journal of Solid State Electrochemistry. 2016;20(1):293-303. doi:10.1007/s10008-015-3040-3 .
Gulicovski, Jelena, Bajat, Jelena, Jokić, Bojan, Panić, V., Mišković-Stanković, Vesna, Milonjić, Slobodan K., "Protective ability and impedance response of sol-gel reversely transformed ceria conversion coating on aluminium" in Journal of Solid State Electrochemistry, 20, no. 1 (2016):293-303, https://doi.org/10.1007/s10008-015-3040-3 . .