TY  - JOUR
AU  - Kandeva, Mara
AU  - Kalitchin, Zhecho
AU  - Zadorozhnaya, Elena
AU  - Vencl, Aleksandar
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3792
AB  - Purpose The purpose of this study was to investigate the biobased (rapeseed) oil with the addition of different amounts of metal-containing additive in a steel-bronze tribological system. The additional purpose was to find the optimal value of the additive. Design/methodology/approach This paper exposes experimental results of the performance characteristics (coefficient of friction (COF), working temperature and wear) of the biolubricant based on rapeseed oil. The amount of commercial metal-containing additive in formulated lubricant was 1, 1.5, 3 and 5 wt.%. All results were compared with the results obtained for the base rapeseed oil. Two different tribometers were used, with the same tribosystem elements materials (bronze and steel). COF experiments were performed under four different normal loads and fixed sliding speed and time. Temperature and wear were continuously monitored. Findings Results showed that the metal-containing additive in rapeseed oil reduced all monitored characteristics. It was also found that the dependence of all characteristics on the amount of additive is nonlinear and that there is an optimal value of it. Originality/value Owing to growing environmental concerns, vegetable oil-based lubricants and other biodegradable lubricants are expanding their area of application. Currently, one of the most widely used vegetable oil is rapeseed oil. The metal-containing additive used in this study is previously investigated as an addition to mineral- and synthetic-based oils. There are very few studies that investigate its influence on the vegetable oil-based lubricants. In addition, there is no comparative investigation of its influence on several performance characteristics (COF, temperature and wear).
PB  - Emerald Group Publishing Ltd, Bingley
T2  - Industrial Lubrication and Tribology
T1  - Performance characteristics of lubricant based on rapeseed oil containing different amounts of metal-containing additive
EP  - 315
IS  - 3
SP  - 309
VL  - 74
DO  - 10.1108/ILT-07-2021-0259
ER  - 

@article{
author = "Kandeva, Mara and Kalitchin, Zhecho and Zadorozhnaya, Elena and Vencl, Aleksandar",
year = "2022",
abstract = "Purpose The purpose of this study was to investigate the biobased (rapeseed) oil with the addition of different amounts of metal-containing additive in a steel-bronze tribological system. The additional purpose was to find the optimal value of the additive. Design/methodology/approach This paper exposes experimental results of the performance characteristics (coefficient of friction (COF), working temperature and wear) of the biolubricant based on rapeseed oil. The amount of commercial metal-containing additive in formulated lubricant was 1, 1.5, 3 and 5 wt.%. All results were compared with the results obtained for the base rapeseed oil. Two different tribometers were used, with the same tribosystem elements materials (bronze and steel). COF experiments were performed under four different normal loads and fixed sliding speed and time. Temperature and wear were continuously monitored. Findings Results showed that the metal-containing additive in rapeseed oil reduced all monitored characteristics. It was also found that the dependence of all characteristics on the amount of additive is nonlinear and that there is an optimal value of it. Originality/value Owing to growing environmental concerns, vegetable oil-based lubricants and other biodegradable lubricants are expanding their area of application. Currently, one of the most widely used vegetable oil is rapeseed oil. The metal-containing additive used in this study is previously investigated as an addition to mineral- and synthetic-based oils. There are very few studies that investigate its influence on the vegetable oil-based lubricants. In addition, there is no comparative investigation of its influence on several performance characteristics (COF, temperature and wear).",
publisher = "Emerald Group Publishing Ltd, Bingley",
journal = "Industrial Lubrication and Tribology",
title = "Performance characteristics of lubricant based on rapeseed oil containing different amounts of metal-containing additive",
pages = "315-309",
number = "3",
volume = "74",
doi = "10.1108/ILT-07-2021-0259"
}

Kandeva, M., Kalitchin, Z., Zadorozhnaya, E.,& Vencl, A.. (2022). Performance characteristics of lubricant based on rapeseed oil containing different amounts of metal-containing additive. in Industrial Lubrication and Tribology
Emerald Group Publishing Ltd, Bingley., 74(3), 309-315.
https://doi.org/10.1108/ILT-07-2021-0259

Kandeva M, Kalitchin Z, Zadorozhnaya E, Vencl A. Performance characteristics of lubricant based on rapeseed oil containing different amounts of metal-containing additive. in Industrial Lubrication and Tribology. 2022;74(3):309-315.
doi:10.1108/ILT-07-2021-0259 .

Kandeva, Mara, Kalitchin, Zhecho, Zadorozhnaya, Elena, Vencl, Aleksandar, "Performance characteristics of lubricant based on rapeseed oil containing different amounts of metal-containing additive" in Industrial Lubrication and Tribology, 74, no. 3 (2022):309-315,
https://doi.org/10.1108/ILT-07-2021-0259 . .

TY  - CONF
AU  - Kandeva, Mara
AU  - Kalitchin, Zhecho
AU  - Zadorozhnaya, Elena
AU  - Vencl, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4350
AB  - The paper exposes experimental results of the performance characteristics (coefficient of friction, contact temperature and wear) of the biolubricant based on rapeseed oil. The amount of commercial metal-containing additive in formulated lubricant was 1, 1.5, 3 and 5 %. All results were compared with the results obtained for the base rapeseed oil. They showed that the metal-containing additive in rapeseed oil reduced all characteristics (coefficient of friction, contact temperature and wear). It was also found that the dependence of all characteristics on the amount of additive is nonlinear and that there is an optimal value of it.
C3  - Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021
T1  - Influence of the amount of metal-containing additive on performance characteristics of lubricant based on rapeseed oil
EP  - 80
SP  - 79
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4350
ER  - 

@conference{
author = "Kandeva, Mara and Kalitchin, Zhecho and Zadorozhnaya, Elena and Vencl, Aleksandar",
year = "2021",
abstract = "The paper exposes experimental results of the performance characteristics (coefficient of friction, contact temperature and wear) of the biolubricant based on rapeseed oil. The amount of commercial metal-containing additive in formulated lubricant was 1, 1.5, 3 and 5 %. All results were compared with the results obtained for the base rapeseed oil. They showed that the metal-containing additive in rapeseed oil reduced all characteristics (coefficient of friction, contact temperature and wear). It was also found that the dependence of all characteristics on the amount of additive is nonlinear and that there is an optimal value of it.",
journal = "Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021",
title = "Influence of the amount of metal-containing additive on performance characteristics of lubricant based on rapeseed oil",
pages = "80-79",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4350"
}

Kandeva, M., Kalitchin, Z., Zadorozhnaya, E.,& Vencl, A.. (2021). Influence of the amount of metal-containing additive on performance characteristics of lubricant based on rapeseed oil. in Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021, 79-80.
https://hdl.handle.net/21.15107/rcub_machinery_4350

Kandeva M, Kalitchin Z, Zadorozhnaya E, Vencl A. Influence of the amount of metal-containing additive on performance characteristics of lubricant based on rapeseed oil. in Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021. 2021;:79-80.
https://hdl.handle.net/21.15107/rcub_machinery_4350 .

Kandeva, Mara, Kalitchin, Zhecho, Zadorozhnaya, Elena, Vencl, Aleksandar, "Influence of the amount of metal-containing additive on performance characteristics of lubricant based on rapeseed oil" in Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021 (2021):79-80,
https://hdl.handle.net/21.15107/rcub_machinery_4350 .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Šljivić, Veljko
AU  - Pokusova, Marcela
AU  - Kandeva, Mara
AU  - Sun, HongGuang
AU  - Zadorozhnaya, Elena
AU  - Bobić, Ilija
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3615
AB  - The investigated metal-metal composites were produced by the compocasting process using the standard zinc-aluminium alloy ZA-27 as a matrix and titanium microparticles (particle size approx. 10 mu m) as a secondary phase. The amount of Ti microparticles was 1 and 2 wt%. Small amount (0.5 wt%) of alumina nanoparticles (particle size 20-30 nm) is also used, as reinforcement. The aim of the presented research was to evaluate the possibility of producing such composites, as well as to see the effect of the addition of Ti microparticles and/or alumina nanoparticles on their microstructure, mechanical and tribological properties. Microstructure and worn surfaces analysis were performed by scanning electron microscope, and mechanical properties were analysed through the Vickers microhardness values. Tribological properties were determined on tribometer with line contact, under mixed lubrication conditions. Microstructural analysis showed that the distribution of Ti microparticles has been improved due to the addition of Al2O3 nanoparticles. This better distribution did not show any significant influence on the microhardness values or coefficient of friction values of the composites, but it induced higher wear resistance of metal-metal composites reinforced with Al2O3 nanoparticles. Better distribution and higher amount of Ti particles increased the surface area of the matrix that was protected with Ti particles during sliding and reduced wear.
PB  - Springer Int Publ Ag, Cham
T2  - International Journal of Metalcasting
T1  - Production, microstructure and tribological properties of Zn-Al/Ti metal-metal composites reinforced with alumina nanoparticles
EP  - 1411
IS  - 4
SP  - 1402
VL  - 15
DO  - 10.1007/s40962-020-00565-5
ER  - 

@article{
author = "Vencl, Aleksandar and Šljivić, Veljko and Pokusova, Marcela and Kandeva, Mara and Sun, HongGuang and Zadorozhnaya, Elena and Bobić, Ilija",
year = "2021",
abstract = "The investigated metal-metal composites were produced by the compocasting process using the standard zinc-aluminium alloy ZA-27 as a matrix and titanium microparticles (particle size approx. 10 mu m) as a secondary phase. The amount of Ti microparticles was 1 and 2 wt%. Small amount (0.5 wt%) of alumina nanoparticles (particle size 20-30 nm) is also used, as reinforcement. The aim of the presented research was to evaluate the possibility of producing such composites, as well as to see the effect of the addition of Ti microparticles and/or alumina nanoparticles on their microstructure, mechanical and tribological properties. Microstructure and worn surfaces analysis were performed by scanning electron microscope, and mechanical properties were analysed through the Vickers microhardness values. Tribological properties were determined on tribometer with line contact, under mixed lubrication conditions. Microstructural analysis showed that the distribution of Ti microparticles has been improved due to the addition of Al2O3 nanoparticles. This better distribution did not show any significant influence on the microhardness values or coefficient of friction values of the composites, but it induced higher wear resistance of metal-metal composites reinforced with Al2O3 nanoparticles. Better distribution and higher amount of Ti particles increased the surface area of the matrix that was protected with Ti particles during sliding and reduced wear.",
publisher = "Springer Int Publ Ag, Cham",
journal = "International Journal of Metalcasting",
title = "Production, microstructure and tribological properties of Zn-Al/Ti metal-metal composites reinforced with alumina nanoparticles",
pages = "1411-1402",
number = "4",
volume = "15",
doi = "10.1007/s40962-020-00565-5"
}

Vencl, A., Šljivić, V., Pokusova, M., Kandeva, M., Sun, H., Zadorozhnaya, E.,& Bobić, I.. (2021). Production, microstructure and tribological properties of Zn-Al/Ti metal-metal composites reinforced with alumina nanoparticles. in International Journal of Metalcasting
Springer Int Publ Ag, Cham., 15(4), 1402-1411.
https://doi.org/10.1007/s40962-020-00565-5

Vencl A, Šljivić V, Pokusova M, Kandeva M, Sun H, Zadorozhnaya E, Bobić I. Production, microstructure and tribological properties of Zn-Al/Ti metal-metal composites reinforced with alumina nanoparticles. in International Journal of Metalcasting. 2021;15(4):1402-1411.
doi:10.1007/s40962-020-00565-5 .

Vencl, Aleksandar, Šljivić, Veljko, Pokusova, Marcela, Kandeva, Mara, Sun, HongGuang, Zadorozhnaya, Elena, Bobić, Ilija, "Production, microstructure and tribological properties of Zn-Al/Ti metal-metal composites reinforced with alumina nanoparticles" in International Journal of Metalcasting, 15, no. 4 (2021):1402-1411,
https://doi.org/10.1007/s40962-020-00565-5 . .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Kandeva, Mara
AU  - Zadorozhnaya, Elena
AU  - Svoboda, Petr
AU  - Michalec, Michal
AU  - Milivojević, Aleksandar
AU  - Trdan, Uroš
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3591
AB  - Metal matrix nanocomposites represent a relatively new class of material, which is still being extensively investigated. Most of the studies, however, are devoted to aluminium- or magnesium-based nanocomposites. A limited number of studies focus on zinc alloy base nanocomposites, with fewer still concentrating on zinc alloy base micro-nanocomposites. In addition, most of the tribological studies investigate adhesive or abrasive wear resistance, whereas studies of erosive wear resistance lag well behind. It was previously shown that the presence of nanoparticles in ZA-27 alloy-based nanocomposites led to a slight increase in erosive wear resistance. Upon discovering that, the aim became to produce micro-nanocomposites that would retain the positive effect of nanoparticles, while further elevating performance, by combining microparticles with nanoparticles. The ZA-27 alloy-based micro-nanocomposites were reinforced with 3 wt. % Al2O3 microparticles (particle size approx. 36 mu m) and with four different amounts (0.3, 0.5, 0.7 and 1 wt. %) of Al2O3 nanoparticles (particle size 20-30 nm). Tested materials were produced by the compocasting process, with mechanical alloying pre-processing. Solid particle erosive wear testing, with particle impact angle of 90 degrees, showed that all micro-nanocomposites had significantly increased wear resistance in comparison to the reference material.
PB  - Sage Publications Ltd, London
T2  - Proceedings of The Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applic
T1  - Studies on structural, mechanical and erosive wear properties of ZA-27 alloy-based micro-nanocomposites
EP  - 1518
IS  - 7
SP  - 1509
VL  - 235
DO  - 10.1177/1464420721994870
ER  - 

@article{
author = "Vencl, Aleksandar and Kandeva, Mara and Zadorozhnaya, Elena and Svoboda, Petr and Michalec, Michal and Milivojević, Aleksandar and Trdan, Uroš",
year = "2021",
abstract = "Metal matrix nanocomposites represent a relatively new class of material, which is still being extensively investigated. Most of the studies, however, are devoted to aluminium- or magnesium-based nanocomposites. A limited number of studies focus on zinc alloy base nanocomposites, with fewer still concentrating on zinc alloy base micro-nanocomposites. In addition, most of the tribological studies investigate adhesive or abrasive wear resistance, whereas studies of erosive wear resistance lag well behind. It was previously shown that the presence of nanoparticles in ZA-27 alloy-based nanocomposites led to a slight increase in erosive wear resistance. Upon discovering that, the aim became to produce micro-nanocomposites that would retain the positive effect of nanoparticles, while further elevating performance, by combining microparticles with nanoparticles. The ZA-27 alloy-based micro-nanocomposites were reinforced with 3 wt. % Al2O3 microparticles (particle size approx. 36 mu m) and with four different amounts (0.3, 0.5, 0.7 and 1 wt. %) of Al2O3 nanoparticles (particle size 20-30 nm). Tested materials were produced by the compocasting process, with mechanical alloying pre-processing. Solid particle erosive wear testing, with particle impact angle of 90 degrees, showed that all micro-nanocomposites had significantly increased wear resistance in comparison to the reference material.",
publisher = "Sage Publications Ltd, London",
journal = "Proceedings of The Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applic",
title = "Studies on structural, mechanical and erosive wear properties of ZA-27 alloy-based micro-nanocomposites",
pages = "1518-1509",
number = "7",
volume = "235",
doi = "10.1177/1464420721994870"
}

Vencl, A., Kandeva, M., Zadorozhnaya, E., Svoboda, P., Michalec, M., Milivojević, A.,& Trdan, U.. (2021). Studies on structural, mechanical and erosive wear properties of ZA-27 alloy-based micro-nanocomposites. in Proceedings of The Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applic
Sage Publications Ltd, London., 235(7), 1509-1518.
https://doi.org/10.1177/1464420721994870

Vencl A, Kandeva M, Zadorozhnaya E, Svoboda P, Michalec M, Milivojević A, Trdan U. Studies on structural, mechanical and erosive wear properties of ZA-27 alloy-based micro-nanocomposites. in Proceedings of The Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applic. 2021;235(7):1509-1518.
doi:10.1177/1464420721994870 .

Vencl, Aleksandar, Kandeva, Mara, Zadorozhnaya, Elena, Svoboda, Petr, Michalec, Michal, Milivojević, Aleksandar, Trdan, Uroš, "Studies on structural, mechanical and erosive wear properties of ZA-27 alloy-based micro-nanocomposites" in Proceedings of The Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applic, 235, no. 7 (2021):1509-1518,
https://doi.org/10.1177/1464420721994870 . .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Ivanović, Lozica
AU  - Stojanović, Blaža
AU  - Zadorozhnaya, Elena
AU  - Miladinović, Slavica
AU  - Svoboda, Petr
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3214
AB  - Surface texturing is one of the surface modification techniques which deliberately change the texture of the surface, in order to improve, among other things, its tribological performance. This is obtained through different patterns, which can be on micro or nano scale, created on the contact surfaces. The performance of a textured surface depends on the shape, geometry and pattern of the surface texture and the operating condition of the components in contact. There is a number of various techniques for surface texturing, among which laser surface texturing is most often used. The different surface texture shapes, different textured area ratios and patterns, different lubrication regimes with different contact geometries and materials have been subject of theoretical and experimental research for many years. This paper reviews the state-of-the-art of researches that consider various surface texturing for tribological application, as well as its effect on performance enhancement. Conclusions of this paper may provide guidance for optimal design of surface textures in practical engineering applications.
PB  - Faculty of Engineering, University of Kragujevac
T2  - Proceedings on Engineering Sciences
T1  - Surface texturing for tribological applications: a review
EP  - 239
IS  - 1
SP  - 227
VL  - 1
DO  - 10.24874/PES01.01.029
ER  - 

@article{
author = "Vencl, Aleksandar and Ivanović, Lozica and Stojanović, Blaža and Zadorozhnaya, Elena and Miladinović, Slavica and Svoboda, Petr",
year = "2019",
abstract = "Surface texturing is one of the surface modification techniques which deliberately change the texture of the surface, in order to improve, among other things, its tribological performance. This is obtained through different patterns, which can be on micro or nano scale, created on the contact surfaces. The performance of a textured surface depends on the shape, geometry and pattern of the surface texture and the operating condition of the components in contact. There is a number of various techniques for surface texturing, among which laser surface texturing is most often used. The different surface texture shapes, different textured area ratios and patterns, different lubrication regimes with different contact geometries and materials have been subject of theoretical and experimental research for many years. This paper reviews the state-of-the-art of researches that consider various surface texturing for tribological application, as well as its effect on performance enhancement. Conclusions of this paper may provide guidance for optimal design of surface textures in practical engineering applications.",
publisher = "Faculty of Engineering, University of Kragujevac",
journal = "Proceedings on Engineering Sciences",
title = "Surface texturing for tribological applications: a review",
pages = "239-227",
number = "1",
volume = "1",
doi = "10.24874/PES01.01.029"
}

Vencl, A., Ivanović, L., Stojanović, B., Zadorozhnaya, E., Miladinović, S.,& Svoboda, P.. (2019). Surface texturing for tribological applications: a review. in Proceedings on Engineering Sciences
Faculty of Engineering, University of Kragujevac., 1(1), 227-239.
https://doi.org/10.24874/PES01.01.029

Vencl A, Ivanović L, Stojanović B, Zadorozhnaya E, Miladinović S, Svoboda P. Surface texturing for tribological applications: a review. in Proceedings on Engineering Sciences. 2019;1(1):227-239.
doi:10.24874/PES01.01.029 .

Vencl, Aleksandar, Ivanović, Lozica, Stojanović, Blaža, Zadorozhnaya, Elena, Miladinović, Slavica, Svoboda, Petr, "Surface texturing for tribological applications: a review" in Proceedings on Engineering Sciences, 1, no. 1 (2019):227-239,
https://doi.org/10.24874/PES01.01.029 . .