TY  - JOUR
AU  - Bučko, Mihael
AU  - Riďošić, Marija
AU  - Kovačina, Jovanka
AU  - Tomić, Milorad V.
AU  - Bajat, Jelena B.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5199
AB  - The aim of this study is development and characterization of the novel Zn-Mn/Al2O3 composite coatings. The coatings were electrodeposited with constant current density on steel, from chloride solution, without any commercial additives. The Zn−Mn alloy coatings that show high corrosion resistance, may be used in future as an alternative to cadmium coatings. However, the pure Zn and Zn alloy coatings are characterized with poor mechanical properties. Therefore, in this work the alumina particles were incorporated into the Zn-Mn matrix, and the hardness and corrosion resistance of the obtained composite coatings were tested. The mechanical and ultrasound agitation were used to achieve good dispersion of plating solution and homogeneous co-deposition of second phase. The goal was to examine the effect of the agitation type in bath, on the attributes of the deposited composite coatings. The incorporation of Al2O3 particles was enhanced when the mechanical agitation of the solution was applied. However, in case that this agitation method was used, the agglomeration of the alumina particles occurred. In contrast, when an ultrasonic agitation of the plating solution was applied, the uniform distribution of the alumina particles could be achieved. The presence of particles in the matrix, along with applied ultrasound, resulted in grain refinement and homogeneous microstructure. The Al2O3 nanoparticles incorporated in Zn-Mn alloy matrix, resulted in a significant increment in the indentation hardness and a modest increase in the coating corrosion resistance. However, the coating hardness increased with alumina addition, only in case when an ultrasonic agitation of the electrodeposition solution was used.
PB  - National Institute of Science Communication and Policy Research
T2  - Indian Journal of Engineering and Materials Sciences
T1  - Hardness and corrosion resistance of Zn−Mn/Al2 O3 composite coatings produced by electrochemical deposition
EP  - 549
IS  - 4
SP  - 540
VL  - 29
DO  - 10.56042/ijems.v29i4.47785
ER  - 

@article{
author = "Bučko, Mihael and Riďošić, Marija and Kovačina, Jovanka and Tomić, Milorad V. and Bajat, Jelena B.",
year = "2022",
abstract = "The aim of this study is development and characterization of the novel Zn-Mn/Al2O3 composite coatings. The coatings were electrodeposited with constant current density on steel, from chloride solution, without any commercial additives. The Zn−Mn alloy coatings that show high corrosion resistance, may be used in future as an alternative to cadmium coatings. However, the pure Zn and Zn alloy coatings are characterized with poor mechanical properties. Therefore, in this work the alumina particles were incorporated into the Zn-Mn matrix, and the hardness and corrosion resistance of the obtained composite coatings were tested. The mechanical and ultrasound agitation were used to achieve good dispersion of plating solution and homogeneous co-deposition of second phase. The goal was to examine the effect of the agitation type in bath, on the attributes of the deposited composite coatings. The incorporation of Al2O3 particles was enhanced when the mechanical agitation of the solution was applied. However, in case that this agitation method was used, the agglomeration of the alumina particles occurred. In contrast, when an ultrasonic agitation of the plating solution was applied, the uniform distribution of the alumina particles could be achieved. The presence of particles in the matrix, along with applied ultrasound, resulted in grain refinement and homogeneous microstructure. The Al2O3 nanoparticles incorporated in Zn-Mn alloy matrix, resulted in a significant increment in the indentation hardness and a modest increase in the coating corrosion resistance. However, the coating hardness increased with alumina addition, only in case when an ultrasonic agitation of the electrodeposition solution was used.",
publisher = "National Institute of Science Communication and Policy Research",
journal = "Indian Journal of Engineering and Materials Sciences",
title = "Hardness and corrosion resistance of Zn−Mn/Al2 O3 composite coatings produced by electrochemical deposition",
pages = "549-540",
number = "4",
volume = "29",
doi = "10.56042/ijems.v29i4.47785"
}

Bučko, M., Riďošić, M., Kovačina, J., Tomić, M. V.,& Bajat, J. B.. (2022). Hardness and corrosion resistance of Zn−Mn/Al2 O3 composite coatings produced by electrochemical deposition. in Indian Journal of Engineering and Materials Sciences
National Institute of Science Communication and Policy Research., 29(4), 540-549.
https://doi.org/10.56042/ijems.v29i4.47785

Bučko M, Riďošić M, Kovačina J, Tomić MV, Bajat JB. Hardness and corrosion resistance of Zn−Mn/Al2 O3 composite coatings produced by electrochemical deposition. in Indian Journal of Engineering and Materials Sciences. 2022;29(4):540-549.
doi:10.56042/ijems.v29i4.47785 .

Bučko, Mihael, Riďošić, Marija, Kovačina, Jovanka, Tomić, Milorad V., Bajat, Jelena B., "Hardness and corrosion resistance of Zn−Mn/Al2 O3 composite coatings produced by electrochemical deposition" in Indian Journal of Engineering and Materials Sciences, 29, no. 4 (2022):540-549,
https://doi.org/10.56042/ijems.v29i4.47785 . .

TY  - JOUR
AU  - Radojković, Bojana
AU  - Kovačina, Jovanka
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Alić, Behar
AU  - Marunkić, Dunja D.
AU  - Simović, Anđela
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/8
AB  - This study considers the corrosion behavior of the X5CrNi18 10 stainless steel-welded joint in NaCl solution, with and without the presence of several corrosion inhibitors (NaNO3, Ce(NO3)(3), and CeCl3). The degree of sensitization of the welded joint to intergranular corrosion is determined using the electrochemical potentiokinetic reactivation method with a double-loop method. Pitting corrosion tests are performed by the potentiodynamic method. Resistance to general corrosion and the stability of the passive film is assessed based on the results of electrochemical impedance spectroscopy measurements, as well as on the values of the corrosion and passivation current. The main goal of this study is to determine the relation of the welded joint microstructure to general and pitting corrosion in the presence of the corrosion inhibitors. The value of pitting potential for the base metal and weld metal in the presence of the NaNO3 or Ce(NO3)(3) inhibitor is shifted to potentials in the transpassive area. The pitting potential for the heat-affected zone also possesses a noticeable higher value. However, nitrate ions do not increase the general corrosion resistance of any part of the welded joint. CeCl3 does not increase resistance to general or pitting corrosion.
PB  - Wiley-VCH Verlag Gmbh, Weinheim
T2  - Materials and Corrosion-Werkstoffe Und Korrosion
T1  - Influence of inhibitors on the corrosion behavior of the X5CrNi18 10 stainless steel-welded joint
EP  - 707
IS  - 4
SP  - 694
VL  - 72
DO  - 10.1002/maco.202012039
ER  - 

@article{
author = "Radojković, Bojana and Kovačina, Jovanka and Jegdić, Bore and Bobić, Biljana and Alić, Behar and Marunkić, Dunja D. and Simović, Anđela",
year = "2021",
abstract = "This study considers the corrosion behavior of the X5CrNi18 10 stainless steel-welded joint in NaCl solution, with and without the presence of several corrosion inhibitors (NaNO3, Ce(NO3)(3), and CeCl3). The degree of sensitization of the welded joint to intergranular corrosion is determined using the electrochemical potentiokinetic reactivation method with a double-loop method. Pitting corrosion tests are performed by the potentiodynamic method. Resistance to general corrosion and the stability of the passive film is assessed based on the results of electrochemical impedance spectroscopy measurements, as well as on the values of the corrosion and passivation current. The main goal of this study is to determine the relation of the welded joint microstructure to general and pitting corrosion in the presence of the corrosion inhibitors. The value of pitting potential for the base metal and weld metal in the presence of the NaNO3 or Ce(NO3)(3) inhibitor is shifted to potentials in the transpassive area. The pitting potential for the heat-affected zone also possesses a noticeable higher value. However, nitrate ions do not increase the general corrosion resistance of any part of the welded joint. CeCl3 does not increase resistance to general or pitting corrosion.",
publisher = "Wiley-VCH Verlag Gmbh, Weinheim",
journal = "Materials and Corrosion-Werkstoffe Und Korrosion",
title = "Influence of inhibitors on the corrosion behavior of the X5CrNi18 10 stainless steel-welded joint",
pages = "707-694",
number = "4",
volume = "72",
doi = "10.1002/maco.202012039"
}

Radojković, B., Kovačina, J., Jegdić, B., Bobić, B., Alić, B., Marunkić, D. D.,& Simović, A.. (2021). Influence of inhibitors on the corrosion behavior of the X5CrNi18 10 stainless steel-welded joint. in Materials and Corrosion-Werkstoffe Und Korrosion
Wiley-VCH Verlag Gmbh, Weinheim., 72(4), 694-707.
https://doi.org/10.1002/maco.202012039

Radojković B, Kovačina J, Jegdić B, Bobić B, Alić B, Marunkić DD, Simović A. Influence of inhibitors on the corrosion behavior of the X5CrNi18 10 stainless steel-welded joint. in Materials and Corrosion-Werkstoffe Und Korrosion. 2021;72(4):694-707.
doi:10.1002/maco.202012039 .

Radojković, Bojana, Kovačina, Jovanka, Jegdić, Bore, Bobić, Biljana, Alić, Behar, Marunkić, Dunja D., Simović, Anđela, "Influence of inhibitors on the corrosion behavior of the X5CrNi18 10 stainless steel-welded joint" in Materials and Corrosion-Werkstoffe Und Korrosion, 72, no. 4 (2021):694-707,
https://doi.org/10.1002/maco.202012039 . .

TY  - CONF
AU  - Marinković, Aleksandar
AU  - Milosavljević, Milutin
AU  - Kovačević, Tihomir
AU  - Kovačina, Jovanka
AU  - Milošević, Milena D.
AU  - Jovanović, Aleksandar
AU  - Petrović, Slobodan
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4421
AB  - Innovative technology has been developed for the production of gelcoat and materials of reduced flammability based on unsaturated polyester resins. These materials were synthesized from raw materials obtained from waste poly(ethylene terephthalate) (PET) and bio-renewable resources. The presented technologies respect the environmental legislative as well as the principles of green and circular economy. Resulting products can be applied in various industries (construction/building, mining, polymer processing etc.).
PB  - OOO «Centr «AЮMЭLЬ»
C3  - Catalogue of XVI International Salon of Inventions and New Technologies "New Time", Sevastopol, the
T1  - Eco-friendly technology for gel-coat and fireproofing material production using bio-renewable and waste materials
EP  - 180
SP  - 179
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4421
ER  - 

@conference{
author = "Marinković, Aleksandar and Milosavljević, Milutin and Kovačević, Tihomir and Kovačina, Jovanka and Milošević, Milena D. and Jovanović, Aleksandar and Petrović, Slobodan",
year = "2020",
abstract = "Innovative technology has been developed for the production of gelcoat and materials of reduced flammability based on unsaturated polyester resins. These materials were synthesized from raw materials obtained from waste poly(ethylene terephthalate) (PET) and bio-renewable resources. The presented technologies respect the environmental legislative as well as the principles of green and circular economy. Resulting products can be applied in various industries (construction/building, mining, polymer processing etc.).",
publisher = "OOO «Centr «AЮMЭLЬ»",
journal = "Catalogue of XVI International Salon of Inventions and New Technologies "New Time", Sevastopol, the",
title = "Eco-friendly technology for gel-coat and fireproofing material production using bio-renewable and waste materials",
pages = "180-179",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4421"
}

Marinković, A., Milosavljević, M., Kovačević, T., Kovačina, J., Milošević, M. D., Jovanović, A.,& Petrović, S.. (2020). Eco-friendly technology for gel-coat and fireproofing material production using bio-renewable and waste materials. in Catalogue of XVI International Salon of Inventions and New Technologies "New Time", Sevastopol, the
OOO «Centr «AЮMЭLЬ»., 179-180.
https://hdl.handle.net/21.15107/rcub_technorep_4421

Marinković A, Milosavljević M, Kovačević T, Kovačina J, Milošević MD, Jovanović A, Petrović S. Eco-friendly technology for gel-coat and fireproofing material production using bio-renewable and waste materials. in Catalogue of XVI International Salon of Inventions and New Technologies "New Time", Sevastopol, the. 2020;:179-180.
https://hdl.handle.net/21.15107/rcub_technorep_4421 .

Marinković, Aleksandar, Milosavljević, Milutin, Kovačević, Tihomir, Kovačina, Jovanka, Milošević, Milena D., Jovanović, Aleksandar, Petrović, Slobodan, "Eco-friendly technology for gel-coat and fireproofing material production using bio-renewable and waste materials" in Catalogue of XVI International Salon of Inventions and New Technologies "New Time", Sevastopol, the (2020):179-180,
https://hdl.handle.net/21.15107/rcub_technorep_4421 .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Stevanović, Maja
AU  - Mihailović, Marija
AU  - Daničić, Dunja
AU  - Kovačina, Jovanka
AU  - Radojković, Bojana
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4533
AB  - The paper analyses the corrosion behaviour of both naturally and artificially aged AA2024 aluminium alloy in NaCl solution in the presence of the corrosion inhibitor benzotriazole (BTA). The differences between these two aging tempers in terms of resistance to general corrosion are explained as well as the differences in terms of pit formation and pit growth. Based on the values of the polarisation resistance and the corrosion current density, the general corrosion resistance of the alloy is determined in the absence and in the presence of BTA. The resistance to pit formation and pit growth is determined on the basis of the polarisation measurements results. Scanning electron microscopy confirmed the expected differences in the appearance and size of the pits formed in naturally aged and artificially aged alloy. In the presence of the corrosion inhibitor BTA, for both aging tempers of the alloy, the corrosion resistance is significantly higher compared to the resistance in the solution without the inhibitor. The value of the polarisation resistance for both aging tempers increases over time. However, at the same time, the value of the constant phase element increases as well. An explanation for this phenomenon is provided. The calculated average value of the thickness of the adsorbed inhibitor layer on the surface of the aluminium alloy is in accordance with the inhibitor protective ability for both aging tempers. Graphic
PB  - Korean Inst Metals Materials, Seoul
T2  - Metals and Materials International
T1  - Resistance to Pit Formation and Pit Growth for Different Tempers of AA2024 Aluminium Alloy in Presence of Benzotriazole
EP  - 1653
IS  - 11
SP  - 1643
VL  - 26
DO  - 10.1007/s12540-019-00451-8
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Stevanović, Maja and Mihailović, Marija and Daničić, Dunja and Kovačina, Jovanka and Radojković, Bojana",
year = "2020",
abstract = "The paper analyses the corrosion behaviour of both naturally and artificially aged AA2024 aluminium alloy in NaCl solution in the presence of the corrosion inhibitor benzotriazole (BTA). The differences between these two aging tempers in terms of resistance to general corrosion are explained as well as the differences in terms of pit formation and pit growth. Based on the values of the polarisation resistance and the corrosion current density, the general corrosion resistance of the alloy is determined in the absence and in the presence of BTA. The resistance to pit formation and pit growth is determined on the basis of the polarisation measurements results. Scanning electron microscopy confirmed the expected differences in the appearance and size of the pits formed in naturally aged and artificially aged alloy. In the presence of the corrosion inhibitor BTA, for both aging tempers of the alloy, the corrosion resistance is significantly higher compared to the resistance in the solution without the inhibitor. The value of the polarisation resistance for both aging tempers increases over time. However, at the same time, the value of the constant phase element increases as well. An explanation for this phenomenon is provided. The calculated average value of the thickness of the adsorbed inhibitor layer on the surface of the aluminium alloy is in accordance with the inhibitor protective ability for both aging tempers. Graphic",
publisher = "Korean Inst Metals Materials, Seoul",
journal = "Metals and Materials International",
title = "Resistance to Pit Formation and Pit Growth for Different Tempers of AA2024 Aluminium Alloy in Presence of Benzotriazole",
pages = "1653-1643",
number = "11",
volume = "26",
doi = "10.1007/s12540-019-00451-8"
}

Jegdić, B., Bobić, B., Stevanović, M., Mihailović, M., Daničić, D., Kovačina, J.,& Radojković, B.. (2020). Resistance to Pit Formation and Pit Growth for Different Tempers of AA2024 Aluminium Alloy in Presence of Benzotriazole. in Metals and Materials International
Korean Inst Metals Materials, Seoul., 26(11), 1643-1653.
https://doi.org/10.1007/s12540-019-00451-8

Jegdić B, Bobić B, Stevanović M, Mihailović M, Daničić D, Kovačina J, Radojković B. Resistance to Pit Formation and Pit Growth for Different Tempers of AA2024 Aluminium Alloy in Presence of Benzotriazole. in Metals and Materials International. 2020;26(11):1643-1653.
doi:10.1007/s12540-019-00451-8 .

Jegdić, Bore, Bobić, Biljana, Stevanović, Maja, Mihailović, Marija, Daničić, Dunja, Kovačina, Jovanka, Radojković, Bojana, "Resistance to Pit Formation and Pit Growth for Different Tempers of AA2024 Aluminium Alloy in Presence of Benzotriazole" in Metals and Materials International, 26, no. 11 (2020):1643-1653,
https://doi.org/10.1007/s12540-019-00451-8 . .