TY  - CONF
AU  - Šćepanović, Jelena
AU  - Radonjić, Dragan
AU  - Vuksanović, Darko
AU  - Pantović Pavlović, Marijana
AU  - Pavlović, Miroslav
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6562
AB  - From the aspect of corrosion stability, aluminum alloys can be divided into corrosion stable and corrosion unstable alloys. However, it should be emphasized that the corrosion properties themselves are not the only relevant factor for their use, because the use is also influenced by mechanical characteristics. In general, these properties are greatly influenced by the chemical composition, which affects the structure, and the main factor that influences the corrosion stability is presence and concentration of alloying elements. The aim of this work was to show the corrosion characteristics of alloys of the Al-Mg system, which is a continuation of previous work of the authors that was conducted in this area. Corrosion characteristics of aluminum were examined using electrochemical impedance spectroscopy during exposure in an aqueous solution of 3 wt. % NaCl. The obtained data were analyzed by equivalent electrical circuits of different configurations with a special discussion related to the appearance and type of oxide layer that is formed due to the effect of the corrosive environment on the sample and the behavior of the samples in the corrosive environment. Equivalent circuits describe the impedance responses well, and the values of the circuit parameters correspond to the proposed model of physical-chemical changes during the corrosion process of the investigated systems. EIS data indicated considerably greater corrosion resistance aluminum with higher Mg content. The corrosion processes on Al alloys with higher Mg content are subjected to more pronounced diffusion limitations in comparison to the processes below the passive oxide film, as a consequence of the formation of a highly compact protective coating. The results show that the addition of Mg is an effective way to improve corrosion resistance for aluminum.
PB  - Zvornik : Faculty of Technology
C3  - Book of Abstracts - VIII International Congress Engineering, Environment and Materials in Process Industry, March 20-23, Jahorina, Republic of Srpska, Bosnia and Herzegovina
T1  - Investigation of Corrosion Behavior by Electrochemical Impedance Spectroscopy of Al Alloys in Al-Mg Systems
SP  - 224
EP  - 224
UR  - https://hdl.handle.net/21.15107/rcub_cer_6562
ER  - 

@conference{
author = "Šćepanović, Jelena and Radonjić, Dragan and Vuksanović, Darko and Pantović Pavlović, Marijana and Pavlović, Miroslav",
year = "2023",
abstract = "From the aspect of corrosion stability, aluminum alloys can be divided into corrosion stable and corrosion unstable alloys. However, it should be emphasized that the corrosion properties themselves are not the only relevant factor for their use, because the use is also influenced by mechanical characteristics. In general, these properties are greatly influenced by the chemical composition, which affects the structure, and the main factor that influences the corrosion stability is presence and concentration of alloying elements. The aim of this work was to show the corrosion characteristics of alloys of the Al-Mg system, which is a continuation of previous work of the authors that was conducted in this area. Corrosion characteristics of aluminum were examined using electrochemical impedance spectroscopy during exposure in an aqueous solution of 3 wt. % NaCl. The obtained data were analyzed by equivalent electrical circuits of different configurations with a special discussion related to the appearance and type of oxide layer that is formed due to the effect of the corrosive environment on the sample and the behavior of the samples in the corrosive environment. Equivalent circuits describe the impedance responses well, and the values of the circuit parameters correspond to the proposed model of physical-chemical changes during the corrosion process of the investigated systems. EIS data indicated considerably greater corrosion resistance aluminum with higher Mg content. The corrosion processes on Al alloys with higher Mg content are subjected to more pronounced diffusion limitations in comparison to the processes below the passive oxide film, as a consequence of the formation of a highly compact protective coating. The results show that the addition of Mg is an effective way to improve corrosion resistance for aluminum.",
publisher = "Zvornik : Faculty of Technology",
journal = "Book of Abstracts - VIII International Congress Engineering, Environment and Materials in Process Industry, March 20-23, Jahorina, Republic of Srpska, Bosnia and Herzegovina",
title = "Investigation of Corrosion Behavior by Electrochemical Impedance Spectroscopy of Al Alloys in Al-Mg Systems",
pages = "224-224",
url = "https://hdl.handle.net/21.15107/rcub_cer_6562"
}

Šćepanović, J., Radonjić, D., Vuksanović, D., Pantović Pavlović, M.,& Pavlović, M.. (2023). Investigation of Corrosion Behavior by Electrochemical Impedance Spectroscopy of Al Alloys in Al-Mg Systems. in Book of Abstracts - VIII International Congress Engineering, Environment and Materials in Process Industry, March 20-23, Jahorina, Republic of Srpska, Bosnia and Herzegovina
Zvornik : Faculty of Technology., 224-224.
https://hdl.handle.net/21.15107/rcub_cer_6562

Šćepanović J, Radonjić D, Vuksanović D, Pantović Pavlović M, Pavlović M. Investigation of Corrosion Behavior by Electrochemical Impedance Spectroscopy of Al Alloys in Al-Mg Systems. in Book of Abstracts - VIII International Congress Engineering, Environment and Materials in Process Industry, March 20-23, Jahorina, Republic of Srpska, Bosnia and Herzegovina. 2023;:224-224.
https://hdl.handle.net/21.15107/rcub_cer_6562 .

Šćepanović, Jelena, Radonjić, Dragan, Vuksanović, Darko, Pantović Pavlović, Marijana, Pavlović, Miroslav, "Investigation of Corrosion Behavior by Electrochemical Impedance Spectroscopy of Al Alloys in Al-Mg Systems" in Book of Abstracts - VIII International Congress Engineering, Environment and Materials in Process Industry, March 20-23, Jahorina, Republic of Srpska, Bosnia and Herzegovina (2023):224-224,
https://hdl.handle.net/21.15107/rcub_cer_6562 .

TY  - JOUR
AU  - Šćepanović, Jelena
AU  - Pantović-Pavlović, Marijana
AU  - Vuksanović, Darko
AU  - Šekularac, Gavrilo
AU  - Pavlović, Miroslav
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7074
AB  - This research discusses the corrosion behavior of as-cast Al alloys with different Mg content by potentiostatic electrochemical impedance spectroscopy (PEIS). The complex plane spectra of all samples feature a high-frequency loop, followed by semi-infinite diffusion impedance characteristics at low frequencies, with the corrosion-induced formation of a defined porous structure of a layer making finite diffusion through the pores dominant upon prolonged exposure. The most compact layer causes the most pronounced and well-resolved finite diffusion features in the impedance spectra of the sample with the highest Mg content, while the sample with the lowest Mg content has a highly porous layer unable to slow down the corrosion rate at the layer//sample interface. The highest layer capacitance and diffusion admittance are found in the sample with the highest Mg content, with a more adherent protective film expected to form. However, the growth rate of the layer was not adequate for the remarkable closing of the pits, indicating the weakness of this sample towards pit activity. The results show that increasing Mg content improves corrosion resistance and clearly separates bulky corrosion from localized pitting corrosion, but it also increases the thickness of a more compact, poorly adhesive layer.
AB  - Ово истраживање се бави понашањем корозије Аl легура са различитим садржајем Мg уз примену потенциостатске електрохемијске импедансне спектроскопије (PEIS). Спектри у комплексној равни свих узорака се карактеришу петљом високе фреквенције праћеном карактеристикама полу-бесконачне дифузије на ниским фреквенцијама, са формирањем дефинисане порозне структуре слоја услед корозије, што доводи до доминације коначне дифузије кроз поре при продуженој изложености. Најкомпактнији слој узрокује најизраженије и најјасније карактеристике коначне дифузије у импедансним спектрима узорка са највећим садржајем Mg, док узорак са најмањим садржајем Mg има високо порозан слој који не може успорити брзину корозије на граници фаза слој/узорак. Највећу капацитивност и адмитанцију дифузионог слоја има узорак са највећим садржајем Mg, са очекиваном појавом адекватног заштитног филма. Међутим, брзина раста слоја није била довољна за значајно затварање питова, што указује на слабост овог узорка према питинг корозији. Резултати показују да повећање садржаја Mg побољшава отпорност на корозију и јасно раздваја корозију у маси материјала од локализоване питинг корозије, али истовремено повећава дебљину слоја који је слабије адхезије и компактнији.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Impedance response of aluminum alloys with varying Mg content in Al–Mg systems during exposure to chloride corrosion environment
T1  - Импедансни одзив алуминијумских легура са различитим садржајем магнезијума током изложености хлоридној корозионој средини
VL  - 88
IS  - 10
SP  - 1025
EP  - 1037
DO  - 10.2298/JSC230505031S
ER  - 

@article{
author = "Šćepanović, Jelena and Pantović-Pavlović, Marijana and Vuksanović, Darko and Šekularac, Gavrilo and Pavlović, Miroslav",
year = "2023",
abstract = "This research discusses the corrosion behavior of as-cast Al alloys with different Mg content by potentiostatic electrochemical impedance spectroscopy (PEIS). The complex plane spectra of all samples feature a high-frequency loop, followed by semi-infinite diffusion impedance characteristics at low frequencies, with the corrosion-induced formation of a defined porous structure of a layer making finite diffusion through the pores dominant upon prolonged exposure. The most compact layer causes the most pronounced and well-resolved finite diffusion features in the impedance spectra of the sample with the highest Mg content, while the sample with the lowest Mg content has a highly porous layer unable to slow down the corrosion rate at the layer//sample interface. The highest layer capacitance and diffusion admittance are found in the sample with the highest Mg content, with a more adherent protective film expected to form. However, the growth rate of the layer was not adequate for the remarkable closing of the pits, indicating the weakness of this sample towards pit activity. The results show that increasing Mg content improves corrosion resistance and clearly separates bulky corrosion from localized pitting corrosion, but it also increases the thickness of a more compact, poorly adhesive layer., Ово истраживање се бави понашањем корозије Аl легура са различитим садржајем Мg уз примену потенциостатске електрохемијске импедансне спектроскопије (PEIS). Спектри у комплексној равни свих узорака се карактеришу петљом високе фреквенције праћеном карактеристикама полу-бесконачне дифузије на ниским фреквенцијама, са формирањем дефинисане порозне структуре слоја услед корозије, што доводи до доминације коначне дифузије кроз поре при продуженој изложености. Најкомпактнији слој узрокује најизраженије и најјасније карактеристике коначне дифузије у импедансним спектрима узорка са највећим садржајем Mg, док узорак са најмањим садржајем Mg има високо порозан слој који не може успорити брзину корозије на граници фаза слој/узорак. Највећу капацитивност и адмитанцију дифузионог слоја има узорак са највећим садржајем Mg, са очекиваном појавом адекватног заштитног филма. Међутим, брзина раста слоја није била довољна за значајно затварање питова, што указује на слабост овог узорка према питинг корозији. Резултати показују да повећање садржаја Mg побољшава отпорност на корозију и јасно раздваја корозију у маси материјала од локализоване питинг корозије, али истовремено повећава дебљину слоја који је слабије адхезије и компактнији.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Impedance response of aluminum alloys with varying Mg content in Al–Mg systems during exposure to chloride corrosion environment, Импедансни одзив алуминијумских легура са различитим садржајем магнезијума током изложености хлоридној корозионој средини",
volume = "88",
number = "10",
pages = "1025-1037",
doi = "10.2298/JSC230505031S"
}

Šćepanović, J., Pantović-Pavlović, M., Vuksanović, D., Šekularac, G.,& Pavlović, M.. (2023). Impedance response of aluminum alloys with varying Mg content in Al–Mg systems during exposure to chloride corrosion environment. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 88(10), 1025-1037.
https://doi.org/10.2298/JSC230505031S

Šćepanović J, Pantović-Pavlović M, Vuksanović D, Šekularac G, Pavlović M. Impedance response of aluminum alloys with varying Mg content in Al–Mg systems during exposure to chloride corrosion environment. in Journal of the Serbian Chemical Society. 2023;88(10):1025-1037.
doi:10.2298/JSC230505031S .

Šćepanović, Jelena, Pantović-Pavlović, Marijana, Vuksanović, Darko, Šekularac, Gavrilo, Pavlović, Miroslav, "Impedance response of aluminum alloys with varying Mg content in Al–Mg systems during exposure to chloride corrosion environment" in Journal of the Serbian Chemical Society, 88, no. 10 (2023):1025-1037,
https://doi.org/10.2298/JSC230505031S . .