TY  - JOUR
AU  - Stojanović, Blaža
AU  - Gajević, Sandra
AU  - Miloradović, Nenad
AU  - Nikolić, Ružica
AU  - Miladinović, Slavica
AU  - Svoboda, Petr
AU  - Vencl, Aleksandar
PY  - 2023
UR  - https://komunikacie.uniza.sk/artkey/csl-202303-0017_comparative-analysis-of-hybrid-composites-based-on-a356-and-za-27-alloys-regarding-their-tribological-behaviour.php
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7337
AB  - The comparative analysis of the two hybrid composites, obtained by the compocasting process, based on A356 and ZA-27 alloys and reinforced with 10 wt. % SiC and 0, 1 and 3 wt. % graphite (Gr) is presented. Optimisation of their tribological behaviour was performed by the Taguchi method and the artificial neural network (ANN). Tribological tests were performed on a block-on-disk tribometer, at three sliding speeds, three normal loads and a sliding distance of 600 m, without lubrication. Results obtained by the ANOVA showed that the hybrid composites based on A356 alloy have the better wear resistance and that the composite reinforced with 10 wt. % SiC and 1 wt. % Gr has the lowest wear rate. The lowest coefficient of friction was obtained for a composite based on ZA-27 alloy reinforced with 10 wt. % SiC, at a normal load of 10 N and sliding speed of 1 m/s.
T2  - Komunikácie – Communications
T1  - Comparative analysis of hybrid composites based on A356 and ZA-27 alloys regarding their tribological behaviour
EP  - B227
IS  - 3
SP  - B215
VL  - 25
DO  - 10.26552/com.C.2023.056
ER  - 

@article{
author = "Stojanović, Blaža and Gajević, Sandra and Miloradović, Nenad and Nikolić, Ružica and Miladinović, Slavica and Svoboda, Petr and Vencl, Aleksandar",
year = "2023",
abstract = "The comparative analysis of the two hybrid composites, obtained by the compocasting process, based on A356 and ZA-27 alloys and reinforced with 10 wt. % SiC and 0, 1 and 3 wt. % graphite (Gr) is presented. Optimisation of their tribological behaviour was performed by the Taguchi method and the artificial neural network (ANN). Tribological tests were performed on a block-on-disk tribometer, at three sliding speeds, three normal loads and a sliding distance of 600 m, without lubrication. Results obtained by the ANOVA showed that the hybrid composites based on A356 alloy have the better wear resistance and that the composite reinforced with 10 wt. % SiC and 1 wt. % Gr has the lowest wear rate. The lowest coefficient of friction was obtained for a composite based on ZA-27 alloy reinforced with 10 wt. % SiC, at a normal load of 10 N and sliding speed of 1 m/s.",
journal = "Komunikácie – Communications",
title = "Comparative analysis of hybrid composites based on A356 and ZA-27 alloys regarding their tribological behaviour",
pages = "B227-B215",
number = "3",
volume = "25",
doi = "10.26552/com.C.2023.056"
}

Stojanović, B., Gajević, S., Miloradović, N., Nikolić, R., Miladinović, S., Svoboda, P.,& Vencl, A.. (2023). Comparative analysis of hybrid composites based on A356 and ZA-27 alloys regarding their tribological behaviour. in Komunikácie – Communications, 25(3), B215-B227.
https://doi.org/10.26552/com.C.2023.056

Stojanović B, Gajević S, Miloradović N, Nikolić R, Miladinović S, Svoboda P, Vencl A. Comparative analysis of hybrid composites based on A356 and ZA-27 alloys regarding their tribological behaviour. in Komunikácie – Communications. 2023;25(3):B215-B227.
doi:10.26552/com.C.2023.056 .

Stojanović, Blaža, Gajević, Sandra, Miloradović, Nenad, Nikolić, Ružica, Miladinović, Slavica, Svoboda, Petr, Vencl, Aleksandar, "Comparative analysis of hybrid composites based on A356 and ZA-27 alloys regarding their tribological behaviour" in Komunikácie – Communications, 25, no. 3 (2023):B215-B227,
https://doi.org/10.26552/com.C.2023.056 . .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Svoboda, Petr
AU  - Klančnik, Simon
AU  - But, Adrian
AU  - Vorkapić, Miloš
AU  - Harničárová, Marta
AU  - Stojanović, Blaža
PY  - 2023
UR  - https://www.mdpi.com/2075-4442/11/1/24
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7339
AB  - Three different and very small amounts of alumina (0.2, 0.3 and 0.5 wt. %) in two sizes (approx. 25 and 100 nm) were used to enhance the wear characteristics of ZA-27 alloy-based nanocomposites. Production was realised through mechanical alloying in pre-processing and compocasting processes. Wear tests were under lubricated sliding conditions on a block-on-disc tribometer, at two sliding speeds (0.25 and 1 m/s), two normal loads (40 and 100 N) and a sliding distance of 1000 m. Experimental results were analysed by applying the response surface methodology (RSM) and a suitable mathematical model for the wear rate of tested nanocomposites was developed. Appropriate wear maps were constructed and the wear mechanism is discussed in this paper. The accuracy of the prediction was evaluated with the use of an artificial neural network (ANN). The architecture of the used ANN was 4-5-1 and the obtained overall regression coefficient was 0.98729. The comparison of the predicting methods showed that ANN is more efficient in predicting wear.
T2  - Lubricants
T1  - Influence of Al2O3 nanoparticles addition in ZA-27 alloy-based nanocomposites and soft computing prediction
IS  - 1
SP  - 24
VL  - 11
DO  - 10.3390/lubricants11010024
ER  - 

@article{
author = "Vencl, Aleksandar and Svoboda, Petr and Klančnik, Simon and But, Adrian and Vorkapić, Miloš and Harničárová, Marta and Stojanović, Blaža",
year = "2023",
abstract = "Three different and very small amounts of alumina (0.2, 0.3 and 0.5 wt. %) in two sizes (approx. 25 and 100 nm) were used to enhance the wear characteristics of ZA-27 alloy-based nanocomposites. Production was realised through mechanical alloying in pre-processing and compocasting processes. Wear tests were under lubricated sliding conditions on a block-on-disc tribometer, at two sliding speeds (0.25 and 1 m/s), two normal loads (40 and 100 N) and a sliding distance of 1000 m. Experimental results were analysed by applying the response surface methodology (RSM) and a suitable mathematical model for the wear rate of tested nanocomposites was developed. Appropriate wear maps were constructed and the wear mechanism is discussed in this paper. The accuracy of the prediction was evaluated with the use of an artificial neural network (ANN). The architecture of the used ANN was 4-5-1 and the obtained overall regression coefficient was 0.98729. The comparison of the predicting methods showed that ANN is more efficient in predicting wear.",
journal = "Lubricants",
title = "Influence of Al2O3 nanoparticles addition in ZA-27 alloy-based nanocomposites and soft computing prediction",
number = "1",
pages = "24",
volume = "11",
doi = "10.3390/lubricants11010024"
}

Vencl, A., Svoboda, P., Klančnik, S., But, A., Vorkapić, M., Harničárová, M.,& Stojanović, B.. (2023). Influence of Al2O3 nanoparticles addition in ZA-27 alloy-based nanocomposites and soft computing prediction. in Lubricants, 11(1), 24.
https://doi.org/10.3390/lubricants11010024

Vencl A, Svoboda P, Klančnik S, But A, Vorkapić M, Harničárová M, Stojanović B. Influence of Al2O3 nanoparticles addition in ZA-27 alloy-based nanocomposites and soft computing prediction. in Lubricants. 2023;11(1):24.
doi:10.3390/lubricants11010024 .

Vencl, Aleksandar, Svoboda, Petr, Klančnik, Simon, But, Adrian, Vorkapić, Miloš, Harničárová, Marta, Stojanović, Blaža, "Influence of Al2O3 nanoparticles addition in ZA-27 alloy-based nanocomposites and soft computing prediction" in Lubricants, 11, no. 1 (2023):24,
https://doi.org/10.3390/lubricants11010024 . .

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  - Kandeva, Mara
AU  - Svoboda, Petr
AU  - Nikolov, N.
AU  - Todorov, T.
AU  - Sofronov, Y.
AU  - Pokusova, Marcela
AU  - Vencl, Aleksandar
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3438
AB  - The nickel coatings were produced by electroless plating process, without and with addition of 5-7 vol.% SiC nanoparticles of five different sizes (10, 45, 100, 150 and 700 nm in diameter). Coatings were tested in as-deposited and in heat treated (heating at 300 degrees C for 6 h) condition, with two different surface textures preparation. This type of coatings was previously tested and showed improved abrasive wear resistance. Coefficients of friction testing of electroless nickel coatings in contact with bronze counter-body were determined in ambient air and unlubricated conditions. Static and kinetic coefficient of friction, as well as the difference between them, were analysed and discussed. The influence of size of embedded SiC particles in composite coatings, on tested friction properties of these coatings was also determined.
PB  - Scibulcom Ltd.
T2  - Journal of Environmental Protection and Ecology
T1  - Effect of silicon carbide nanoparticles size on friction properties of electroless nickel coatings
EP  - 1325
IS  - 4
SP  - 1314
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3438
ER  - 

@article{
author = "Kandeva, Mara and Svoboda, Petr and Nikolov, N. and Todorov, T. and Sofronov, Y. and Pokusova, Marcela and Vencl, Aleksandar",
year = "2020",
abstract = "The nickel coatings were produced by electroless plating process, without and with addition of 5-7 vol.% SiC nanoparticles of five different sizes (10, 45, 100, 150 and 700 nm in diameter). Coatings were tested in as-deposited and in heat treated (heating at 300 degrees C for 6 h) condition, with two different surface textures preparation. This type of coatings was previously tested and showed improved abrasive wear resistance. Coefficients of friction testing of electroless nickel coatings in contact with bronze counter-body were determined in ambient air and unlubricated conditions. Static and kinetic coefficient of friction, as well as the difference between them, were analysed and discussed. The influence of size of embedded SiC particles in composite coatings, on tested friction properties of these coatings was also determined.",
publisher = "Scibulcom Ltd.",
journal = "Journal of Environmental Protection and Ecology",
title = "Effect of silicon carbide nanoparticles size on friction properties of electroless nickel coatings",
pages = "1325-1314",
number = "4",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3438"
}

Kandeva, M., Svoboda, P., Nikolov, N., Todorov, T., Sofronov, Y., Pokusova, M.,& Vencl, A.. (2020). Effect of silicon carbide nanoparticles size on friction properties of electroless nickel coatings. in Journal of Environmental Protection and Ecology
Scibulcom Ltd.., 21(4), 1314-1325.
https://hdl.handle.net/21.15107/rcub_machinery_3438

Kandeva M, Svoboda P, Nikolov N, Todorov T, Sofronov Y, Pokusova M, Vencl A. Effect of silicon carbide nanoparticles size on friction properties of electroless nickel coatings. in Journal of Environmental Protection and Ecology. 2020;21(4):1314-1325.
https://hdl.handle.net/21.15107/rcub_machinery_3438 .

Kandeva, Mara, Svoboda, Petr, Nikolov, N., Todorov, T., Sofronov, Y., Pokusova, Marcela, Vencl, Aleksandar, "Effect of silicon carbide nanoparticles size on friction properties of electroless nickel coatings" in Journal of Environmental Protection and Ecology, 21, no. 4 (2020):1314-1325,
https://hdl.handle.net/21.15107/rcub_machinery_3438 .

TY  - JOUR
AU  - Michalec, Michal
AU  - Svoboda, Petr
AU  - Krupka, Ivan
AU  - Hartl, Martin
AU  - Vencl, Aleksandar
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3295
AB  - Real-time external alteration of the internal properties of lubricants is highly desirable in all mechanical systems. However, fabricating a suitable and effective smart lubricant is a long-lasting experimental process. In this study, the film thickness and frictional response of ionic liquid-lubricated non-conformal contacts to an electric field excitation under elastohydrodynamic conditions were examined. Film thickness was evaluated using a "ball-on-disc" optical tribometer with an electric circuit. Friction tests were carried on a mini traction machine (MTM) tribometer with a "ball-on-disc" rotation module and an electric circuit for contact area excitation. The results demonstrate that there is a difference in the behaviour of the ionic liquid during electric field excitation at the evaluated film thicknesses. The results of evaluated film thicknesses demonstrate that there is a difference in the behaviour of the ionic liquid during electric field excitation. Therefore, the ionic liquids could be a new basis for the smart lubrication of mechanical components. Moreover, the proposed experimental approach can be used to identify electrosensitive fluids.
PB  - Springer, New York
T2  - Friction
T1  - Investigation of the tribological performance of ionic liquids in non-conformal EHL contacts under electric field activation
EP  - 994
IS  - 5
SP  - 982
VL  - 8
DO  - 10.1007/s40544-019-0342-y
ER  - 

@article{
author = "Michalec, Michal and Svoboda, Petr and Krupka, Ivan and Hartl, Martin and Vencl, Aleksandar",
year = "2020",
abstract = "Real-time external alteration of the internal properties of lubricants is highly desirable in all mechanical systems. However, fabricating a suitable and effective smart lubricant is a long-lasting experimental process. In this study, the film thickness and frictional response of ionic liquid-lubricated non-conformal contacts to an electric field excitation under elastohydrodynamic conditions were examined. Film thickness was evaluated using a "ball-on-disc" optical tribometer with an electric circuit. Friction tests were carried on a mini traction machine (MTM) tribometer with a "ball-on-disc" rotation module and an electric circuit for contact area excitation. The results demonstrate that there is a difference in the behaviour of the ionic liquid during electric field excitation at the evaluated film thicknesses. The results of evaluated film thicknesses demonstrate that there is a difference in the behaviour of the ionic liquid during electric field excitation. Therefore, the ionic liquids could be a new basis for the smart lubrication of mechanical components. Moreover, the proposed experimental approach can be used to identify electrosensitive fluids.",
publisher = "Springer, New York",
journal = "Friction",
title = "Investigation of the tribological performance of ionic liquids in non-conformal EHL contacts under electric field activation",
pages = "994-982",
number = "5",
volume = "8",
doi = "10.1007/s40544-019-0342-y"
}

Michalec, M., Svoboda, P., Krupka, I., Hartl, M.,& Vencl, A.. (2020). Investigation of the tribological performance of ionic liquids in non-conformal EHL contacts under electric field activation. in Friction
Springer, New York., 8(5), 982-994.
https://doi.org/10.1007/s40544-019-0342-y

Michalec M, Svoboda P, Krupka I, Hartl M, Vencl A. Investigation of the tribological performance of ionic liquids in non-conformal EHL contacts under electric field activation. in Friction. 2020;8(5):982-994.
doi:10.1007/s40544-019-0342-y .

Michalec, Michal, Svoboda, Petr, Krupka, Ivan, Hartl, Martin, Vencl, Aleksandar, "Investigation of the tribological performance of ionic liquids in non-conformal EHL contacts under electric field activation" in Friction, 8, no. 5 (2020):982-994,
https://doi.org/10.1007/s40544-019-0342-y . .

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 . .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Bobić, Ilija
AU  - Bobić, Biljana
AU  - Jakimovska, Kristina
AU  - Svoboda, Petr
AU  - Kandeva, Mara
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3140
AB  - Metal matrix nanocomposites (MMnCs) comprise a metal matrix filled with nanosized reinforcements with physical and mechanical properties that are very different from those of the matrix. In ZA-27 alloy-based nanocomposites, the metal matrix provides ductility and toughness, while usually used ceramic reinforcements give high strength and hardness. Tested ZA-27 alloy-based nanocomposites, reinforced with different types (SiC and Al2O3), amounts (0.2 wt.%, 0.3 wt.%, and 0.5 wt.%) and sizes (25 nm, 50 nm, and 100 nm) of nanoparticles were produced through the compocasting process with mechanical alloying pre-processing (ball milling). It was previously shown that the presence of nanoparticles in ZA-27 alloy-based nanocomposites led to the formation of a finer structure in the nanocomposites matrix and an improvement in the basic mechanical properties (hardness and compressive yield strength) through the enhanced dislocation density strengthening mechanism. Solid particle erosive wear testing demonstrated that these improvements were followed with an increase in the erosive wear resistance of tested nanocomposites, as well. Additionally, by analyzing the influences of type, amount, and size of nanoparticles on the erosive wear resistance of nanocomposites, it was demonstrated that there is an optimal amount of nanoparticles, which in our case is 0.3 wt.%, and that the presence of SiC nanoparticles and smaller nanoparticles in nanocomposites had more beneficial influence on erosive wear resistance.
PB  - Springeropen, London
T2  - Friction
T1  - Erosive wear properties of ZA-27 alloy-based nanocomposites: Influence of type, amount, and size of nanoparticle reinforcements
EP  - 350
IS  - 4
SP  - 340
VL  - 7
DO  - 10.1007/s40544-018-0222-x
ER  - 

@article{
author = "Vencl, Aleksandar and Bobić, Ilija and Bobić, Biljana and Jakimovska, Kristina and Svoboda, Petr and Kandeva, Mara",
year = "2019",
abstract = "Metal matrix nanocomposites (MMnCs) comprise a metal matrix filled with nanosized reinforcements with physical and mechanical properties that are very different from those of the matrix. In ZA-27 alloy-based nanocomposites, the metal matrix provides ductility and toughness, while usually used ceramic reinforcements give high strength and hardness. Tested ZA-27 alloy-based nanocomposites, reinforced with different types (SiC and Al2O3), amounts (0.2 wt.%, 0.3 wt.%, and 0.5 wt.%) and sizes (25 nm, 50 nm, and 100 nm) of nanoparticles were produced through the compocasting process with mechanical alloying pre-processing (ball milling). It was previously shown that the presence of nanoparticles in ZA-27 alloy-based nanocomposites led to the formation of a finer structure in the nanocomposites matrix and an improvement in the basic mechanical properties (hardness and compressive yield strength) through the enhanced dislocation density strengthening mechanism. Solid particle erosive wear testing demonstrated that these improvements were followed with an increase in the erosive wear resistance of tested nanocomposites, as well. Additionally, by analyzing the influences of type, amount, and size of nanoparticles on the erosive wear resistance of nanocomposites, it was demonstrated that there is an optimal amount of nanoparticles, which in our case is 0.3 wt.%, and that the presence of SiC nanoparticles and smaller nanoparticles in nanocomposites had more beneficial influence on erosive wear resistance.",
publisher = "Springeropen, London",
journal = "Friction",
title = "Erosive wear properties of ZA-27 alloy-based nanocomposites: Influence of type, amount, and size of nanoparticle reinforcements",
pages = "350-340",
number = "4",
volume = "7",
doi = "10.1007/s40544-018-0222-x"
}

Vencl, A., Bobić, I., Bobić, B., Jakimovska, K., Svoboda, P.,& Kandeva, M.. (2019). Erosive wear properties of ZA-27 alloy-based nanocomposites: Influence of type, amount, and size of nanoparticle reinforcements. in Friction
Springeropen, London., 7(4), 340-350.
https://doi.org/10.1007/s40544-018-0222-x

Vencl A, Bobić I, Bobić B, Jakimovska K, Svoboda P, Kandeva M. Erosive wear properties of ZA-27 alloy-based nanocomposites: Influence of type, amount, and size of nanoparticle reinforcements. in Friction. 2019;7(4):340-350.
doi:10.1007/s40544-018-0222-x .

Vencl, Aleksandar, Bobić, Ilija, Bobić, Biljana, Jakimovska, Kristina, Svoboda, Petr, Kandeva, Mara, "Erosive wear properties of ZA-27 alloy-based nanocomposites: Influence of type, amount, and size of nanoparticle reinforcements" in Friction, 7, no. 4 (2019):340-350,
https://doi.org/10.1007/s40544-018-0222-x . .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Bobić, Biljana
AU  - Vučetić, Filip
AU  - Svoboda, Petr
AU  - Popović, Vladimir
AU  - Bobić, Ilija
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2827
AB  - Nanocomposites were synthesized via compocasting using Zn25Al3Si and Zn25Al3Si0.03Sr alloys as the matrices and nanoparticles of Al2O3 (1 wt%) as the reinforcement. Structure of the nanocomposites was examined, and their basic mechanical and tribological properties were tested. Distribution of primary silicon particles in the structure of nanocomposites has been improved compared to their distribution in the Zn25Al3Si matrix alloy due to the presence of Al2O3 nanoparticles and strontium. The primary silicon particles in the structure of the nanocomposites were found to be more fine-grained compared to the same particles in the structure of the as-cast Zn25Al3Si alloy. Tested mechanical properties of the nanocomposite with Zn25Al3Si alloy matrix are improved, compared to the matrix alloy. The nanocomposite with Zn25Al3Si0.03Sr alloy matrix is characterized with slightly higher value of compressive yield strength and a slightly lower hardness value compared to the as-cast Zn25Al3Si alloy. Both nanocomposites showed lower wear rate and higher coefficient of friction, compared to the matrix alloy, in sliding under the boundary lubricating regime. However, the nanocomposite with Zn25Al3Si alloy matrix showed better tribological properties than the nanocomposite with Zn25Al3Si0.03Sr alloy matrix.
PB  - Springer Heidelberg, Heidelberg
T2  - Journal of The Brazilian Society of Mechanical Sciences and Engineering
T1  - Effect of Al2O3 nanoparticles and strontium addition on structural, mechanical and tribological properties of Zn25Al3Si alloy
IS  - 11
VL  - 40
DO  - 10.1007/s40430-018-1441-9
ER  - 

@article{
author = "Vencl, Aleksandar and Bobić, Biljana and Vučetić, Filip and Svoboda, Petr and Popović, Vladimir and Bobić, Ilija",
year = "2018",
abstract = "Nanocomposites were synthesized via compocasting using Zn25Al3Si and Zn25Al3Si0.03Sr alloys as the matrices and nanoparticles of Al2O3 (1 wt%) as the reinforcement. Structure of the nanocomposites was examined, and their basic mechanical and tribological properties were tested. Distribution of primary silicon particles in the structure of nanocomposites has been improved compared to their distribution in the Zn25Al3Si matrix alloy due to the presence of Al2O3 nanoparticles and strontium. The primary silicon particles in the structure of the nanocomposites were found to be more fine-grained compared to the same particles in the structure of the as-cast Zn25Al3Si alloy. Tested mechanical properties of the nanocomposite with Zn25Al3Si alloy matrix are improved, compared to the matrix alloy. The nanocomposite with Zn25Al3Si0.03Sr alloy matrix is characterized with slightly higher value of compressive yield strength and a slightly lower hardness value compared to the as-cast Zn25Al3Si alloy. Both nanocomposites showed lower wear rate and higher coefficient of friction, compared to the matrix alloy, in sliding under the boundary lubricating regime. However, the nanocomposite with Zn25Al3Si alloy matrix showed better tribological properties than the nanocomposite with Zn25Al3Si0.03Sr alloy matrix.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Journal of The Brazilian Society of Mechanical Sciences and Engineering",
title = "Effect of Al2O3 nanoparticles and strontium addition on structural, mechanical and tribological properties of Zn25Al3Si alloy",
number = "11",
volume = "40",
doi = "10.1007/s40430-018-1441-9"
}

Vencl, A., Bobić, B., Vučetić, F., Svoboda, P., Popović, V.,& Bobić, I.. (2018). Effect of Al2O3 nanoparticles and strontium addition on structural, mechanical and tribological properties of Zn25Al3Si alloy. in Journal of The Brazilian Society of Mechanical Sciences and Engineering
Springer Heidelberg, Heidelberg., 40(11).
https://doi.org/10.1007/s40430-018-1441-9

Vencl A, Bobić B, Vučetić F, Svoboda P, Popović V, Bobić I. Effect of Al2O3 nanoparticles and strontium addition on structural, mechanical and tribological properties of Zn25Al3Si alloy. in Journal of The Brazilian Society of Mechanical Sciences and Engineering. 2018;40(11).
doi:10.1007/s40430-018-1441-9 .

Vencl, Aleksandar, Bobić, Biljana, Vučetić, Filip, Svoboda, Petr, Popović, Vladimir, Bobić, Ilija, "Effect of Al2O3 nanoparticles and strontium addition on structural, mechanical and tribological properties of Zn25Al3Si alloy" in Journal of The Brazilian Society of Mechanical Sciences and Engineering, 40, no. 11 (2018),
https://doi.org/10.1007/s40430-018-1441-9 . .

TY  - JOUR
AU  - Kandeva, Mara
AU  - Karastoyanov, D.
AU  - Nikolcheva, G.
AU  - Stojanović, Blaža
AU  - Svoboda, Petr
AU  - Vencl, Aleksandar
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2706
AB  - The objects of this work were nine different copper-based friction linings produced from powder by pressing and sintering. Six copper-based friction linings contained 3 wt.% zinc (Zn) and variable content of tin (Sn), i.e. 1, 2, 4, 6, 8 and 10 wt. %. Three copper-based friction linings were with fixed contents of Zn (3 wt.%) and Sn (10 wt.%), and with different amount of SiC particles, i.e. 2, 4 and 6 wt.%. Tribological studies on these friction linings included determination of the static and kinetic coefficient of friction under different normal loads and unlubricated sliding conditions, as well as, determination of the abrasive wear resistance under different normal loads and unlubricated sliding/rolling conditions. The analysed results present the influence of Sn content and addition of SiC particles to the copper-based friction lining on its friction and wear properties.
PB  - Fakultet inženjerskih nauka, Kragujevac
T2  - Tribology in Industry
T1  - Tribological studies on copper-based friction linings
EP  - 237
IS  - 2
SP  - 228
VL  - 39
DO  - 10.24874/ti.2017.39.02.10
ER  - 

@article{
author = "Kandeva, Mara and Karastoyanov, D. and Nikolcheva, G. and Stojanović, Blaža and Svoboda, Petr and Vencl, Aleksandar",
year = "2017",
abstract = "The objects of this work were nine different copper-based friction linings produced from powder by pressing and sintering. Six copper-based friction linings contained 3 wt.% zinc (Zn) and variable content of tin (Sn), i.e. 1, 2, 4, 6, 8 and 10 wt. %. Three copper-based friction linings were with fixed contents of Zn (3 wt.%) and Sn (10 wt.%), and with different amount of SiC particles, i.e. 2, 4 and 6 wt.%. Tribological studies on these friction linings included determination of the static and kinetic coefficient of friction under different normal loads and unlubricated sliding conditions, as well as, determination of the abrasive wear resistance under different normal loads and unlubricated sliding/rolling conditions. The analysed results present the influence of Sn content and addition of SiC particles to the copper-based friction lining on its friction and wear properties.",
publisher = "Fakultet inženjerskih nauka, Kragujevac",
journal = "Tribology in Industry",
title = "Tribological studies on copper-based friction linings",
pages = "237-228",
number = "2",
volume = "39",
doi = "10.24874/ti.2017.39.02.10"
}

Kandeva, M., Karastoyanov, D., Nikolcheva, G., Stojanović, B., Svoboda, P.,& Vencl, A.. (2017). Tribological studies on copper-based friction linings. in Tribology in Industry
Fakultet inženjerskih nauka, Kragujevac., 39(2), 228-237.
https://doi.org/10.24874/ti.2017.39.02.10

Kandeva M, Karastoyanov D, Nikolcheva G, Stojanović B, Svoboda P, Vencl A. Tribological studies on copper-based friction linings. in Tribology in Industry. 2017;39(2):228-237.
doi:10.24874/ti.2017.39.02.10 .

Kandeva, Mara, Karastoyanov, D., Nikolcheva, G., Stojanović, Blaža, Svoboda, Petr, Vencl, Aleksandar, "Tribological studies on copper-based friction linings" in Tribology in Industry, 39, no. 2 (2017):228-237,
https://doi.org/10.24874/ti.2017.39.02.10 . .