TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Vučetić, Filip
AU  - Bobić, Biljana
AU  - Pitel, Jan
AU  - Bobić, Ilija
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2393
AB  - The influence of SiC microparticles reinforcement and graphite macroparticles addition on the friction and wear characteristics of A356 Al-Si alloys, produced by compocasting, has been assessed using a pin-on-disc tribometer. The incorporation of SiC reinforcement increased the coefficient of friction and reduced the wear. The addition of graphite did not reduce the coefficient of friction. In the case of hybrid composite with 1 wt% graphite, wear was more or less the same as with SiC reinforced composite, while in the case of hybrid composite with 3 wt% graphite, wear was further reduced. On the worn surfaces of hybrid composites, the presence of the discontinuous mixed surface layer, containing graphite and transferred counter-body material, was noticed.
PB  - Springer London
T2  - International Journal of Advanced Manufacturing Technology
T1  - Tribological characterisation in dry sliding conditions of compocasted hybrid A356/SiCp/Grp composites with graphite macroparticles
VL  - 100
IS  - 9-12
SP  - 2135
EP  - 2146
DO  - 10.1007/s00170-018-2866-0
ER  - 

@article{
author = "Vencl, Aleksandar and Vučetić, Filip and Bobić, Biljana and Pitel, Jan and Bobić, Ilija",
year = "2019",
abstract = "The influence of SiC microparticles reinforcement and graphite macroparticles addition on the friction and wear characteristics of A356 Al-Si alloys, produced by compocasting, has been assessed using a pin-on-disc tribometer. The incorporation of SiC reinforcement increased the coefficient of friction and reduced the wear. The addition of graphite did not reduce the coefficient of friction. In the case of hybrid composite with 1 wt% graphite, wear was more or less the same as with SiC reinforced composite, while in the case of hybrid composite with 3 wt% graphite, wear was further reduced. On the worn surfaces of hybrid composites, the presence of the discontinuous mixed surface layer, containing graphite and transferred counter-body material, was noticed.",
publisher = "Springer London",
journal = "International Journal of Advanced Manufacturing Technology",
title = "Tribological characterisation in dry sliding conditions of compocasted hybrid A356/SiCp/Grp composites with graphite macroparticles",
volume = "100",
number = "9-12",
pages = "2135-2146",
doi = "10.1007/s00170-018-2866-0"
}

Vencl, A., Vučetić, F., Bobić, B., Pitel, J.,& Bobić, I.. (2019). Tribological characterisation in dry sliding conditions of compocasted hybrid A356/SiCp/Grp composites with graphite macroparticles. in International Journal of Advanced Manufacturing Technology
Springer London., 100(9-12), 2135-2146.
https://doi.org/10.1007/s00170-018-2866-0

Vencl A, Vučetić F, Bobić B, Pitel J, Bobić I. Tribological characterisation in dry sliding conditions of compocasted hybrid A356/SiCp/Grp composites with graphite macroparticles. in International Journal of Advanced Manufacturing Technology. 2019;100(9-12):2135-2146.
doi:10.1007/s00170-018-2866-0 .

Vencl, Aleksandar, Vučetić, Filip, Bobić, Biljana, Pitel, Jan, Bobić, Ilija, "Tribological characterisation in dry sliding conditions of compocasted hybrid A356/SiCp/Grp composites with graphite macroparticles" in International Journal of Advanced Manufacturing Technology, 100, no. 9-12 (2019):2135-2146,
https://doi.org/10.1007/s00170-018-2866-0 . .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Bobić, Biljana
AU  - Vučetić, Filip
AU  - Svoboda, Petr
AU  - Popović, Vladimir
AU  - Bobić, Ilija
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2370
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
VL  - 40
IS  - 11
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",
volume = "40",
number = "11",
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  - CONF
AU  - Radojković, Bojana
AU  - Ristić, Slavica
AU  - Polić, Suzana R.
AU  - Jegdić, Bore
AU  - Krmpot, Aleksandar
AU  - Salatić, Branislav
AU  - Vučetić, Filip
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6381
AB  - A large number of metals and alloys are widely used in the defense industry, not only in weaponry and defense equipment, but also for communications equipment and infrastructure. These materials are often exposed to extreme condition: high or low temperatures, humidity, chemical agents, wear and so on. They have to have the ability to withstand corrosion, temperature extremes and wear. Different types of weapons and equipment require adequate maintenance and cleaning. As an efficient cleaning method, lasers are widely used in many areas for different type of materials. This paper presents the results of the laser cleaning effects on tarnished brass plate. Nd:YAG and Er:Glass lasers were used to clean the tarnish layer from surface. Effects on the laser irradiated zones were investigated by optical and SEM microscopy and EDX analysis. Also surface's profile roughness and surface hardness were measured. Some parameters for successfully and safely cleaning of brass surface without degrading the surrounding material were determined.
PB  - Belgrade : The Military Technical Institute
C3  - Proceedings - 7th International scientific conference on defensive technologies-proceedings, OTEH 2016, 6-7 October 2016, Belgrade, Serbia
T1  - Lasers possibilities in brass surface cleaning
SP  - 603
EP  - 608
UR  - https://hdl.handle.net/21.15107/rcub_cer_6381
ER  - 

@conference{
author = "Radojković, Bojana and Ristić, Slavica and Polić, Suzana R. and Jegdić, Bore and Krmpot, Aleksandar and Salatić, Branislav and Vučetić, Filip",
year = "2016",
abstract = "A large number of metals and alloys are widely used in the defense industry, not only in weaponry and defense equipment, but also for communications equipment and infrastructure. These materials are often exposed to extreme condition: high or low temperatures, humidity, chemical agents, wear and so on. They have to have the ability to withstand corrosion, temperature extremes and wear. Different types of weapons and equipment require adequate maintenance and cleaning. As an efficient cleaning method, lasers are widely used in many areas for different type of materials. This paper presents the results of the laser cleaning effects on tarnished brass plate. Nd:YAG and Er:Glass lasers were used to clean the tarnish layer from surface. Effects on the laser irradiated zones were investigated by optical and SEM microscopy and EDX analysis. Also surface's profile roughness and surface hardness were measured. Some parameters for successfully and safely cleaning of brass surface without degrading the surrounding material were determined.",
publisher = "Belgrade : The Military Technical Institute",
journal = "Proceedings - 7th International scientific conference on defensive technologies-proceedings, OTEH 2016, 6-7 October 2016, Belgrade, Serbia",
title = "Lasers possibilities in brass surface cleaning",
pages = "603-608",
url = "https://hdl.handle.net/21.15107/rcub_cer_6381"
}

Radojković, B., Ristić, S., Polić, S. R., Jegdić, B., Krmpot, A., Salatić, B.,& Vučetić, F.. (2016). Lasers possibilities in brass surface cleaning. in Proceedings - 7th International scientific conference on defensive technologies-proceedings, OTEH 2016, 6-7 October 2016, Belgrade, Serbia
Belgrade : The Military Technical Institute., 603-608.
https://hdl.handle.net/21.15107/rcub_cer_6381

Radojković B, Ristić S, Polić SR, Jegdić B, Krmpot A, Salatić B, Vučetić F. Lasers possibilities in brass surface cleaning. in Proceedings - 7th International scientific conference on defensive technologies-proceedings, OTEH 2016, 6-7 October 2016, Belgrade, Serbia. 2016;:603-608.
https://hdl.handle.net/21.15107/rcub_cer_6381 .

Radojković, Bojana, Ristić, Slavica, Polić, Suzana R., Jegdić, Bore, Krmpot, Aleksandar, Salatić, Branislav, Vučetić, Filip, "Lasers possibilities in brass surface cleaning" in Proceedings - 7th International scientific conference on defensive technologies-proceedings, OTEH 2016, 6-7 October 2016, Belgrade, Serbia (2016):603-608,
https://hdl.handle.net/21.15107/rcub_cer_6381 .

TY  - CONF
AU  - Radojković, Bojana
AU  - Ristić, Slavica
AU  - Polić, Suzana R.
AU  - Krmpot, Aleksandar
AU  - Salatić, Branislav
AU  - Orlić, Jovana
AU  - Vučetić, Filip
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6164
AB  - The use of lasers in the conservation of artefacts plays an important role since its posibilities of safe, efficient and efective cleaning on complex surfaces and wide range of materials. This paper presents the results of the laser cleaning effects on ceramic medieval artefacts originated from archaeological sites from region of Tyre and Sidon, Lebanon and naturally tarnished brass plate (unknown origin). Nd:YAG and Er:Glass lasers were used to clean unwanted layers from artefact surface. Before these investigations, some preliminary analyses were conducted on the comparable contemporary samples. Effects on the laser irradiated zones were investigated by optical and SEM microscopy and EDX analysis. LIBS and XRF were used for the morphological and chemical analysis of laser radiation impact on the examined materials. Also surface's profile roughness and surface hardness were measured. Some parameters for successfully and safely cleaning of brass surface without degrading the surrounding material were determined.
PB  - Budapest: International Measurement Confederation (IMEKO)
C3  - Proceedings of IMEKO International Conference on Metrology for Archaeology and Cultural Heritage (MetroArchaeo 2016)
T1  - XRF and LIBS measuring on metal and ceramic  laser-cleaned surfaces
SP  - 71
EP  - 76
UR  - https://hdl.handle.net/21.15107/rcub_cer_6164
ER  - 

@conference{
author = "Radojković, Bojana and Ristić, Slavica and Polić, Suzana R. and Krmpot, Aleksandar and Salatić, Branislav and Orlić, Jovana and Vučetić, Filip",
year = "2016",
abstract = "The use of lasers in the conservation of artefacts plays an important role since its posibilities of safe, efficient and efective cleaning on complex surfaces and wide range of materials. This paper presents the results of the laser cleaning effects on ceramic medieval artefacts originated from archaeological sites from region of Tyre and Sidon, Lebanon and naturally tarnished brass plate (unknown origin). Nd:YAG and Er:Glass lasers were used to clean unwanted layers from artefact surface. Before these investigations, some preliminary analyses were conducted on the comparable contemporary samples. Effects on the laser irradiated zones were investigated by optical and SEM microscopy and EDX analysis. LIBS and XRF were used for the morphological and chemical analysis of laser radiation impact on the examined materials. Also surface's profile roughness and surface hardness were measured. Some parameters for successfully and safely cleaning of brass surface without degrading the surrounding material were determined.",
publisher = "Budapest: International Measurement Confederation (IMEKO)",
journal = "Proceedings of IMEKO International Conference on Metrology for Archaeology and Cultural Heritage (MetroArchaeo 2016)",
title = "XRF and LIBS measuring on metal and ceramic  laser-cleaned surfaces",
pages = "71-76",
url = "https://hdl.handle.net/21.15107/rcub_cer_6164"
}

Radojković, B., Ristić, S., Polić, S. R., Krmpot, A., Salatić, B., Orlić, J.,& Vučetić, F.. (2016). XRF and LIBS measuring on metal and ceramic  laser-cleaned surfaces. in Proceedings of IMEKO International Conference on Metrology for Archaeology and Cultural Heritage (MetroArchaeo 2016)
Budapest: International Measurement Confederation (IMEKO)., 71-76.
https://hdl.handle.net/21.15107/rcub_cer_6164

Radojković B, Ristić S, Polić SR, Krmpot A, Salatić B, Orlić J, Vučetić F. XRF and LIBS measuring on metal and ceramic  laser-cleaned surfaces. in Proceedings of IMEKO International Conference on Metrology for Archaeology and Cultural Heritage (MetroArchaeo 2016). 2016;:71-76.
https://hdl.handle.net/21.15107/rcub_cer_6164 .

Radojković, Bojana, Ristić, Slavica, Polić, Suzana R., Krmpot, Aleksandar, Salatić, Branislav, Orlić, Jovana, Vučetić, Filip, "XRF and LIBS measuring on metal and ceramic  laser-cleaned surfaces" in Proceedings of IMEKO International Conference on Metrology for Archaeology and Cultural Heritage (MetroArchaeo 2016) (2016):71-76,
https://hdl.handle.net/21.15107/rcub_cer_6164 .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Bobić, Ilija
AU  - Vučetić, Filip
AU  - Bobić, Biljana
AU  - Ružić, Jovana
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1399
AB  - The ZA-27 alloy is a zinc-aluminium casting alloy that has been frequently used as the material for sleeves of plain bearings. It has good physical, mechanical and tribological properties. However, one of the major disadvantages is its dimensional instability over a period of time (ageing). To overcome this, copper in the alloy may be replaced with silicon. Coarsening of silicon particles can be controlled by a suitable addition of strontium. In this paper, the commercial ZA-27 alloy and six different Zn25Al alloys (with 1 and 3 wt.% silicon; and with 0, 0.03 and 0.05 wt.% strontium) were obtained by casting in the pre-heated steel mould. Casting of the alloys was carried out at a laboratory level. In the alloys containing silicon, a finer dendritic structure was noticed compared to the structure of the commercial ZA-27 alloy. The addition of strontium influenced the size and distribution of primary silicon particles. Needle-like particles of eutectic silicon were changed into the fibrous ones. The presence of silicon and strontium did not significantly affect mechanical properties of the obtained Zn25Al alloys compared to mechanical properties of the commercial ZA-27 alloy. Wear rate of the alloys containing silicon was lower than that of the ZA-27 alloy. The addition of strontium further lowers the wear rate and slightly increases the coefficient of friction.
PB  - Elsevier Sci Ltd, Oxford
T2  - Materials & Design
T1  - Structural, mechanical and tribological characterization of Zn25Al alloys with Si and Sr addition
VL  - 64
SP  - 381
EP  - 392
DO  - 10.1016/j.matdes.2014.07.056
ER  - 

@article{
author = "Vencl, Aleksandar and Bobić, Ilija and Vučetić, Filip and Bobić, Biljana and Ružić, Jovana",
year = "2014",
abstract = "The ZA-27 alloy is a zinc-aluminium casting alloy that has been frequently used as the material for sleeves of plain bearings. It has good physical, mechanical and tribological properties. However, one of the major disadvantages is its dimensional instability over a period of time (ageing). To overcome this, copper in the alloy may be replaced with silicon. Coarsening of silicon particles can be controlled by a suitable addition of strontium. In this paper, the commercial ZA-27 alloy and six different Zn25Al alloys (with 1 and 3 wt.% silicon; and with 0, 0.03 and 0.05 wt.% strontium) were obtained by casting in the pre-heated steel mould. Casting of the alloys was carried out at a laboratory level. In the alloys containing silicon, a finer dendritic structure was noticed compared to the structure of the commercial ZA-27 alloy. The addition of strontium influenced the size and distribution of primary silicon particles. Needle-like particles of eutectic silicon were changed into the fibrous ones. The presence of silicon and strontium did not significantly affect mechanical properties of the obtained Zn25Al alloys compared to mechanical properties of the commercial ZA-27 alloy. Wear rate of the alloys containing silicon was lower than that of the ZA-27 alloy. The addition of strontium further lowers the wear rate and slightly increases the coefficient of friction.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Materials & Design",
title = "Structural, mechanical and tribological characterization of Zn25Al alloys with Si and Sr addition",
volume = "64",
pages = "381-392",
doi = "10.1016/j.matdes.2014.07.056"
}

Vencl, A., Bobić, I., Vučetić, F., Bobić, B.,& Ružić, J.. (2014). Structural, mechanical and tribological characterization of Zn25Al alloys with Si and Sr addition. in Materials & Design
Elsevier Sci Ltd, Oxford., 64, 381-392.
https://doi.org/10.1016/j.matdes.2014.07.056

Vencl A, Bobić I, Vučetić F, Bobić B, Ružić J. Structural, mechanical and tribological characterization of Zn25Al alloys with Si and Sr addition. in Materials & Design. 2014;64:381-392.
doi:10.1016/j.matdes.2014.07.056 .

Vencl, Aleksandar, Bobić, Ilija, Vučetić, Filip, Bobić, Biljana, Ružić, Jovana, "Structural, mechanical and tribological characterization of Zn25Al alloys with Si and Sr addition" in Materials & Design, 64 (2014):381-392,
https://doi.org/10.1016/j.matdes.2014.07.056 . .