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Cerium-cysteine complex inhibitor for aluminium alloy AA7075-T6

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2020
4406.pdf (409.8Kb)
Authors
Kovačina, Jovanka N.
Marunkić, Dunja D.
Simović, Anđela
Radojković, Bojana
Jegdić, Bore
Marinković, Aleksandar
Conference object (Published version)
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Abstract
Aluminium AA7075 alloy with its low density and good mechanical properties, widely responds to the requirements of aerospace, navy, and defense industries. However, corrosion is the most common problem that affects the reliability and service life of components and constructions based on this alloy. One of the most practical methods for protecting metals from corrosion is the use of inhibitors. Chromates are known as excellent inhibitors but chromate compounds are highly toxic, carcinogenic, and thus hazardous to humans and the environment. The aim of this study was to synthesize an organic eco-friendly compound (cerium-cysteine) and to investigate its inhibitory property on aluminum alloy AA7075-T6. Rare-earth metals are effective and environmentally friendly substances for aluminium protection as well as cysteine that can be found in many proteins and enzymes such as the keratin in hair. The synthesized inhibitor was confirmed and analyzed by FTIR. The survey of samples corrosion res...istance was conducted by three electrochemical methods: linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS), and polarization measurements (Epit) in a 0.1M NaCl solution at room temperature. Different concentrations of ceriumcysteine were used to find the best efficiency. The best results were then tested for time dependence (up to 72 h). The inhibitory effectiveness of the cerium complex is shown to depend on a variety of factors such as concentration and time dependence.

Keywords:
Cerium cysteine / corrosion inhibitor / NaCl solution / aluminium alloy AA7075-T6
Source:
9th International Scientific Conference od Defensive Technologies OTEH 2020, 2020
Publisher:
  • Belgrade : Military Technical Institute
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-200026)
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_technorep_4409
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4409
Collections
  • Radovi istraživača / Researchers’ publications (TMF)
  • Radovi istraživača (Inovacioni centar) / Researchers’ publications (Innovation Centre)
Institution/Community
Tehnološko-metalurški fakultet
TY  - CONF
AU  - Kovačina, Jovanka N.
AU  - Marunkić, Dunja D.
AU  - Simović, Anđela
AU  - Radojković, Bojana
AU  - Jegdić, Bore
AU  - Marinković, Aleksandar
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4409
AB  - Aluminium AA7075 alloy with its low density and good mechanical properties, widely responds to the requirements of aerospace, navy, and defense industries. However, corrosion is the most common problem that affects the reliability and service life of components and constructions based on this alloy. One of the most practical methods for protecting metals from corrosion is the use of inhibitors. Chromates are known as excellent inhibitors but chromate compounds are highly toxic, carcinogenic, and thus hazardous to humans and the environment. The aim of this study was to synthesize an organic eco-friendly compound (cerium-cysteine) and to investigate its inhibitory property on aluminum alloy AA7075-T6. Rare-earth metals are effective and environmentally friendly substances for aluminium protection as well as cysteine that can be found in many proteins and enzymes such as the keratin in hair. The synthesized inhibitor was confirmed and analyzed by FTIR. The survey of samples corrosion resistance was conducted by three electrochemical methods: linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS), and polarization measurements (Epit) in a 0.1M NaCl solution at room temperature. Different concentrations of ceriumcysteine were used to find the best efficiency. The best results were then tested for time dependence (up to 72 h). The inhibitory effectiveness of the cerium complex is shown to depend on a variety of factors such as concentration and time dependence.
PB  - Belgrade : Military Technical Institute
C3  - 9th International Scientific Conference od Defensive Technologies OTEH 2020
T1  - Cerium-cysteine complex inhibitor for aluminium alloy AA7075-T6
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4409
ER  - 
@conference{
author = "Kovačina, Jovanka N. and Marunkić, Dunja D. and Simović, Anđela and Radojković, Bojana and Jegdić, Bore and Marinković, Aleksandar",
year = "2020",
abstract = "Aluminium AA7075 alloy with its low density and good mechanical properties, widely responds to the requirements of aerospace, navy, and defense industries. However, corrosion is the most common problem that affects the reliability and service life of components and constructions based on this alloy. One of the most practical methods for protecting metals from corrosion is the use of inhibitors. Chromates are known as excellent inhibitors but chromate compounds are highly toxic, carcinogenic, and thus hazardous to humans and the environment. The aim of this study was to synthesize an organic eco-friendly compound (cerium-cysteine) and to investigate its inhibitory property on aluminum alloy AA7075-T6. Rare-earth metals are effective and environmentally friendly substances for aluminium protection as well as cysteine that can be found in many proteins and enzymes such as the keratin in hair. The synthesized inhibitor was confirmed and analyzed by FTIR. The survey of samples corrosion resistance was conducted by three electrochemical methods: linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS), and polarization measurements (Epit) in a 0.1M NaCl solution at room temperature. Different concentrations of ceriumcysteine were used to find the best efficiency. The best results were then tested for time dependence (up to 72 h). The inhibitory effectiveness of the cerium complex is shown to depend on a variety of factors such as concentration and time dependence.",
publisher = "Belgrade : Military Technical Institute",
journal = "9th International Scientific Conference od Defensive Technologies OTEH 2020",
title = "Cerium-cysteine complex inhibitor for aluminium alloy AA7075-T6",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4409"
}
Kovačina, J. N., Marunkić, D. D., Simović, A., Radojković, B., Jegdić, B.,& Marinković, A.. (2020). Cerium-cysteine complex inhibitor for aluminium alloy AA7075-T6. in 9th International Scientific Conference od Defensive Technologies OTEH 2020
Belgrade : Military Technical Institute..
https://hdl.handle.net/21.15107/rcub_technorep_4409
Kovačina JN, Marunkić DD, Simović A, Radojković B, Jegdić B, Marinković A. Cerium-cysteine complex inhibitor for aluminium alloy AA7075-T6. in 9th International Scientific Conference od Defensive Technologies OTEH 2020. 2020;.
https://hdl.handle.net/21.15107/rcub_technorep_4409 .
Kovačina, Jovanka N., Marunkić, Dunja D., Simović, Anđela, Radojković, Bojana, Jegdić, Bore, Marinković, Aleksandar, "Cerium-cysteine complex inhibitor for aluminium alloy AA7075-T6" in 9th International Scientific Conference od Defensive Technologies OTEH 2020 (2020),
https://hdl.handle.net/21.15107/rcub_technorep_4409 .

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