Protective ability and impedance response of sol-gel reversely transformed ceria conversion coating on aluminium
Само за регистроване кориснике
2016
Аутори
Gulicovski, JelenaBajat, Jelena
Jokić, Bojan
Panić, Vladimir
Mišković-Stanković, Vesna
Milonjić, Slobodan K.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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.
Кључне речи:
Corrosion protection / Forced hydrolysis / AlO(OH) fibre network / Gel/solid phase transition / Coating/substrate interphaseИзвор:
Journal of Solid State Electrochemistry, 2016, 20, 1, 293-303Издавач:
- Springer, New York
Финансирање / пројекти:
- Синтеза, процесирање и карактеризација наноструктурних материјала за примену у области енергије, механичког инжењерства, заштите животне стредине и биомедицине (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
- Синтеза, развој технологија добијања и примена наноструктурних мултифункционалних материјала дефинисаних својстава (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45019)
- Нов приступ дизајнирању материјала за конверзију и складиштење енергије (RS-MESTD-Basic Research (BR or ON)-172060)
DOI: 10.1007/s10008-015-3040-3
ISSN: 1432-8488
WoS: 000368113400030
Scopus: 2-s2.0-84953350487
Институција/група
IHTMTY - JOUR AU - Gulicovski, Jelena AU - Bajat, Jelena AU - Jokić, Bojan AU - Panić, Vladimir AU - Mišković-Stanković, Vesna AU - Milonjić, Slobodan K. PY - 2016 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1975 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 VL - 20 IS - 1 SP - 293 EP - 303 DO - 10.1007/s10008-015-3040-3 ER -
@article{ author = "Gulicovski, Jelena and Bajat, Jelena and Jokić, Bojan and Panić, Vladimir 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", volume = "20", number = "1", pages = "293-303", 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, Vladimir, 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 . .