TY  - CONF
AU  - Marković, Gordana
AU  - Manojlović, Vaso
AU  - Sokić, Miroslav
AU  - Ruzic, Jovana
AU  - Milojkov, Dušan
AU  - Patarić, Aleksandra
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7362
AB  - Titanium alloys are widely employed in various fields, particularly in biomedical engineering, due to their mechanical  and corrosion resistance properties combined with good biocompatibility. The modulus of elasticity is a distinguishing  feature of this group of materials compared to others used for similar purposes. A database of approximately 238 titanium alloys free of toxic elements was compiled for this study. The influence of different factors (such as alloy element  proportions, density, and specific heat) on the modulus of elasticity was predicted using four methods: support vector machine, XGBoost, Neural Network, and Random Forest. The Random Forest mean absolute error (MAE) of 7.33 GPa, falls within the range of experimentally obtained absolute errors in the literature (up to about 11 GPa). A strong correlation (R2 = 0.72) was observed between experimental and predicted data. Lastly, specific alloying element regions were identified for the modulus of elasticity, which can be used to design new biocompatible titanium alloys in the future.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - 5th Metallurgical & Materials Engineering Congress of South-East Europe
T1  - Predicting the modulus of elasticity of biocompatible titanium alloys using machine learning
SP  - 154
EP  - 158
UR  - https://hdl.handle.net/21.15107/rcub_cer_7362
ER  - 

@conference{
author = "Marković, Gordana and Manojlović, Vaso and Sokić, Miroslav and Ruzic, Jovana and Milojkov, Dušan and Patarić, Aleksandra",
year = "2023",
abstract = "Titanium alloys are widely employed in various fields, particularly in biomedical engineering, due to their mechanical  and corrosion resistance properties combined with good biocompatibility. The modulus of elasticity is a distinguishing  feature of this group of materials compared to others used for similar purposes. A database of approximately 238 titanium alloys free of toxic elements was compiled for this study. The influence of different factors (such as alloy element  proportions, density, and specific heat) on the modulus of elasticity was predicted using four methods: support vector machine, XGBoost, Neural Network, and Random Forest. The Random Forest mean absolute error (MAE) of 7.33 GPa, falls within the range of experimentally obtained absolute errors in the literature (up to about 11 GPa). A strong correlation (R2 = 0.72) was observed between experimental and predicted data. Lastly, specific alloying element regions were identified for the modulus of elasticity, which can be used to design new biocompatible titanium alloys in the future.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "5th Metallurgical & Materials Engineering Congress of South-East Europe",
title = "Predicting the modulus of elasticity of biocompatible titanium alloys using machine learning",
pages = "154-158",
url = "https://hdl.handle.net/21.15107/rcub_cer_7362"
}

Marković, G., Manojlović, V., Sokić, M., Ruzic, J., Milojkov, D.,& Patarić, A.. (2023). Predicting the modulus of elasticity of biocompatible titanium alloys using machine learning. in 5th Metallurgical & Materials Engineering Congress of South-East Europe
Belgrade : Association of Metallurgical Engineers of Serbia., 154-158.
https://hdl.handle.net/21.15107/rcub_cer_7362

Marković G, Manojlović V, Sokić M, Ruzic J, Milojkov D, Patarić A. Predicting the modulus of elasticity of biocompatible titanium alloys using machine learning. in 5th Metallurgical & Materials Engineering Congress of South-East Europe. 2023;:154-158.
https://hdl.handle.net/21.15107/rcub_cer_7362 .

Marković, Gordana, Manojlović, Vaso, Sokić, Miroslav, Ruzic, Jovana, Milojkov, Dušan, Patarić, Aleksandra, "Predicting the modulus of elasticity of biocompatible titanium alloys using machine learning" in 5th Metallurgical & Materials Engineering Congress of South-East Europe (2023):154-158,
https://hdl.handle.net/21.15107/rcub_cer_7362 .

TY  - JOUR
AU  - Bobić, Biljana
AU  - Vencl, Aleksandar
AU  - Ružić, Jovana
AU  - Bobić, Ilija
AU  - Damnjanović, Zvonko
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3648
AB  - Particulate nanocomposites with the base of ZA27 alloy were synthesized using an innovative route, which includes mechanical milling and compocasting. Scrap from the matrix alloy and ceramic nanoreinforcements were mechanically milled using the ball-milling technique, which led to the formation of composite microparticles. The use of these particles in the compocasting process provided better wettability of ceramic nanoreinforcements in the semi-solid metal matrix, which resulted in a relatively good dispersion of the nanoreinforcements in nanocomposite castings. The presence of nanoreinforcements led to the grain refinement in the matrix of nanocomposites. The mechanical properties of the synthesized nanocomposites are improved and compared with the properties of the metal matrix. The observed increase in the hardness of nanocomposites with Al2O3 nanoreinforcements (20–30 nm) was 6.5% to 10.8%, while the yield strength of these nanocomposites has increased by 12.2% to 23.2%. The hardness and compressive yield strength of the nanocomposites with Al2O3 nanoparticles (100 nm) increased by 1.7% to 8.0% and 2.3% to 8.3%, respectively. The increase in hardness of the nanocomposites with SiC nanoparticles (50 nm) was 11.5% to 20.6%, while the increase in the yield strength was 15.6% to 24.5%. The greatest contribution to the overall strengthening in the synthesized nanocomposites is the result of increased dislocation density due to the difference in coefficients of thermal expansion for the matrix alloy and nanoreinforcements.
PB  - Sage Publishing
T2  - Journal of Composite Materials
T1  - Microstructural and basic mechanical characteristics of ZA27 alloy-based nanocomposites synthesized by mechanical milling and compocasting
VL  - 53
IS  - 15
SP  - 2033
EP  - 2046
DO  - 10.1177/0021998318817876
ER  - 

@article{
author = "Bobić, Biljana and Vencl, Aleksandar and Ružić, Jovana and Bobić, Ilija and Damnjanović, Zvonko",
year = "2019",
abstract = "Particulate nanocomposites with the base of ZA27 alloy were synthesized using an innovative route, which includes mechanical milling and compocasting. Scrap from the matrix alloy and ceramic nanoreinforcements were mechanically milled using the ball-milling technique, which led to the formation of composite microparticles. The use of these particles in the compocasting process provided better wettability of ceramic nanoreinforcements in the semi-solid metal matrix, which resulted in a relatively good dispersion of the nanoreinforcements in nanocomposite castings. The presence of nanoreinforcements led to the grain refinement in the matrix of nanocomposites. The mechanical properties of the synthesized nanocomposites are improved and compared with the properties of the metal matrix. The observed increase in the hardness of nanocomposites with Al2O3 nanoreinforcements (20–30 nm) was 6.5% to 10.8%, while the yield strength of these nanocomposites has increased by 12.2% to 23.2%. The hardness and compressive yield strength of the nanocomposites with Al2O3 nanoparticles (100 nm) increased by 1.7% to 8.0% and 2.3% to 8.3%, respectively. The increase in hardness of the nanocomposites with SiC nanoparticles (50 nm) was 11.5% to 20.6%, while the increase in the yield strength was 15.6% to 24.5%. The greatest contribution to the overall strengthening in the synthesized nanocomposites is the result of increased dislocation density due to the difference in coefficients of thermal expansion for the matrix alloy and nanoreinforcements.",
publisher = "Sage Publishing",
journal = "Journal of Composite Materials",
title = "Microstructural and basic mechanical characteristics of ZA27 alloy-based nanocomposites synthesized by mechanical milling and compocasting",
volume = "53",
number = "15",
pages = "2033-2046",
doi = "10.1177/0021998318817876"
}

Bobić, B., Vencl, A., Ružić, J., Bobić, I.,& Damnjanović, Z.. (2019). Microstructural and basic mechanical characteristics of ZA27 alloy-based nanocomposites synthesized by mechanical milling and compocasting. in Journal of Composite Materials
Sage Publishing., 53(15), 2033-2046.
https://doi.org/10.1177/0021998318817876

Bobić B, Vencl A, Ružić J, Bobić I, Damnjanović Z. Microstructural and basic mechanical characteristics of ZA27 alloy-based nanocomposites synthesized by mechanical milling and compocasting. in Journal of Composite Materials. 2019;53(15):2033-2046.
doi:10.1177/0021998318817876 .

Bobić, Biljana, Vencl, Aleksandar, Ružić, Jovana, Bobić, Ilija, Damnjanović, Zvonko, "Microstructural and basic mechanical characteristics of ZA27 alloy-based nanocomposites synthesized by mechanical milling and compocasting" in Journal of Composite Materials, 53, no. 15 (2019):2033-2046,
https://doi.org/10.1177/0021998318817876 . .

TY  - JOUR
AU  - Šešlija, Sanja
AU  - Nešić, Aleksandra
AU  - Ružić, Jovana
AU  - Kalagasidis Krušić, Melina
AU  - Veličković, Sava J.
AU  - Avolio, Roberto
AU  - Santagata, Gabriella
AU  - Malinconico, Mario
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2473
AB  - The aim of this study was the development of novel polysaccharide based films intended to be used as edible food packaging material. The films were prepared by solution casting method using highly methoxylated pectin (PEC) and poly(ethylene glycol) (PEG) of various molecular weights (400, 600 and 1000 gmol(-1)) in different ratios (5:1, 3:1 and 1:1). The film formation was supported by hydrogen bonding between PEC and PEG, which was evidenced by means of ATR-FTIR and NMR analysis. TGA revealed that generally PEG behaves like a pro-degrading agent for pectin, except in the case of PEC/PEG film with a ratio of 1:1. Furthermore, DSC thermograms indicated that PEG1000 exists as a separate phase in the pectin matrix while the formulations with PEG400 and PEG600 showed mainly amorphous morphology. The addition of PEG enhanced the plasticization of PEC films, as evidenced by progressive decreasing of the glass transition temperature values (T-g). The tensile test measurements showed that increasing concentration of PEG produced weaker and more flexibile films. Due to the increased molecular mobility, the pectin phase became more permeable to water vapor as the PEG concentration increased. The obtained results showed that the combination of both polymers resulted in interesting bio -inspired edible films with the potential to compete with commercially used synthetic package materials.
PB  - Elsevier
T2  - Food Hydrocolloids
T1  - Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation
VL  - 77
SP  - 494
EP  - 501
DO  - 10.1016/j.foodhyd.2017.10.027
ER  - 

@article{
author = "Šešlija, Sanja and Nešić, Aleksandra and Ružić, Jovana and Kalagasidis Krušić, Melina and Veličković, Sava J. and Avolio, Roberto and Santagata, Gabriella and Malinconico, Mario",
year = "2018",
abstract = "The aim of this study was the development of novel polysaccharide based films intended to be used as edible food packaging material. The films were prepared by solution casting method using highly methoxylated pectin (PEC) and poly(ethylene glycol) (PEG) of various molecular weights (400, 600 and 1000 gmol(-1)) in different ratios (5:1, 3:1 and 1:1). The film formation was supported by hydrogen bonding between PEC and PEG, which was evidenced by means of ATR-FTIR and NMR analysis. TGA revealed that generally PEG behaves like a pro-degrading agent for pectin, except in the case of PEC/PEG film with a ratio of 1:1. Furthermore, DSC thermograms indicated that PEG1000 exists as a separate phase in the pectin matrix while the formulations with PEG400 and PEG600 showed mainly amorphous morphology. The addition of PEG enhanced the plasticization of PEC films, as evidenced by progressive decreasing of the glass transition temperature values (T-g). The tensile test measurements showed that increasing concentration of PEG produced weaker and more flexibile films. Due to the increased molecular mobility, the pectin phase became more permeable to water vapor as the PEG concentration increased. The obtained results showed that the combination of both polymers resulted in interesting bio -inspired edible films with the potential to compete with commercially used synthetic package materials.",
publisher = "Elsevier",
journal = "Food Hydrocolloids",
title = "Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation",
volume = "77",
pages = "494-501",
doi = "10.1016/j.foodhyd.2017.10.027"
}

Šešlija, S., Nešić, A., Ružić, J., Kalagasidis Krušić, M., Veličković, S. J., Avolio, R., Santagata, G.,& Malinconico, M.. (2018). Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation. in Food Hydrocolloids
Elsevier., 77, 494-501.
https://doi.org/10.1016/j.foodhyd.2017.10.027

Šešlija S, Nešić A, Ružić J, Kalagasidis Krušić M, Veličković SJ, Avolio R, Santagata G, Malinconico M. Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation. in Food Hydrocolloids. 2018;77:494-501.
doi:10.1016/j.foodhyd.2017.10.027 .

Šešlija, Sanja, Nešić, Aleksandra, Ružić, Jovana, Kalagasidis Krušić, Melina, Veličković, Sava J., Avolio, Roberto, Santagata, Gabriella, Malinconico, Mario, "Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation" in Food Hydrocolloids, 77 (2018):494-501,
https://doi.org/10.1016/j.foodhyd.2017.10.027 . .

TY  - JOUR
AU  - Šešlija, Sanja
AU  - Nešić, Aleksandra
AU  - Ružić, Jovana
AU  - Kalagasidis Krušić, Melina
AU  - Veličković, Sava
AU  - Avolio, Roberto
AU  - Santagata, Gabriella
AU  - Malinconico, Mario
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4289
AB  - The aim of this study was the development of novel polysaccharide based films intended to be used as edible food packaging material. The films were prepared by solution casting method using highly methoxylated pectin (PEC) and poly(ethylene glycol) (PEG) of various molecular weights (400, 600 and 1000 gmol(-1)) in different ratios (5:1, 3:1 and 1:1). The film formation was supported by hydrogen bonding between PEC and PEG, which was evidenced by means of ATR-FTIR and NMR analysis. TGA revealed that generally PEG behaves like a pro-degrading agent for pectin, except in the case of PEC/PEG film with a ratio of 1:1. Furthermore, DSC thermograms indicated that PEG1000 exists as a separate phase in the pectin matrix while the formulations with PEG400 and PEG600 showed mainly amorphous morphology. The addition of PEG enhanced the plasticization of PEC films, as evidenced by progressive decreasing of the glass transition temperature values (T-g). The tensile test measurements showed that increasing concentration of PEG produced weaker and more flexibile films. Due to the increased molecular mobility, the pectin phase became more permeable to water vapor as the PEG concentration increased. The obtained results showed that the combination of both polymers resulted in interesting bio -inspired edible films with the potential to compete with commercially used synthetic package materials.
PB  - Elsevier
T2  - Food Hydrocolloids
T1  - Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation
VL  - 77
SP  - 494
EP  - 501
DO  - 10.1016/j.foodhyd.2017.10.027
ER  - 

@article{
author = "Šešlija, Sanja and Nešić, Aleksandra and Ružić, Jovana and Kalagasidis Krušić, Melina and Veličković, Sava and Avolio, Roberto and Santagata, Gabriella and Malinconico, Mario",
year = "2018",
abstract = "The aim of this study was the development of novel polysaccharide based films intended to be used as edible food packaging material. The films were prepared by solution casting method using highly methoxylated pectin (PEC) and poly(ethylene glycol) (PEG) of various molecular weights (400, 600 and 1000 gmol(-1)) in different ratios (5:1, 3:1 and 1:1). The film formation was supported by hydrogen bonding between PEC and PEG, which was evidenced by means of ATR-FTIR and NMR analysis. TGA revealed that generally PEG behaves like a pro-degrading agent for pectin, except in the case of PEC/PEG film with a ratio of 1:1. Furthermore, DSC thermograms indicated that PEG1000 exists as a separate phase in the pectin matrix while the formulations with PEG400 and PEG600 showed mainly amorphous morphology. The addition of PEG enhanced the plasticization of PEC films, as evidenced by progressive decreasing of the glass transition temperature values (T-g). The tensile test measurements showed that increasing concentration of PEG produced weaker and more flexibile films. Due to the increased molecular mobility, the pectin phase became more permeable to water vapor as the PEG concentration increased. The obtained results showed that the combination of both polymers resulted in interesting bio -inspired edible films with the potential to compete with commercially used synthetic package materials.",
publisher = "Elsevier",
journal = "Food Hydrocolloids",
title = "Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation",
volume = "77",
pages = "494-501",
doi = "10.1016/j.foodhyd.2017.10.027"
}

Šešlija, S., Nešić, A., Ružić, J., Kalagasidis Krušić, M., Veličković, S., Avolio, R., Santagata, G.,& Malinconico, M.. (2018). Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation. in Food Hydrocolloids
Elsevier., 77, 494-501.
https://doi.org/10.1016/j.foodhyd.2017.10.027

Šešlija S, Nešić A, Ružić J, Kalagasidis Krušić M, Veličković S, Avolio R, Santagata G, Malinconico M. Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation. in Food Hydrocolloids. 2018;77:494-501.
doi:10.1016/j.foodhyd.2017.10.027 .

Šešlija, Sanja, Nešić, Aleksandra, Ružić, Jovana, Kalagasidis Krušić, Melina, Veličković, Sava, Avolio, Roberto, Santagata, Gabriella, Malinconico, Mario, "Edible blend films of pectin and poly(ethylene glycol): Preparation and physico-chemical evaluation" in Food Hydrocolloids, 77 (2018):494-501,
https://doi.org/10.1016/j.foodhyd.2017.10.027 . .

TY  - JOUR
AU  - Bobić, Ilija
AU  - Ružić, Jovana
AU  - Bobić, Biljana
AU  - Babić, Miroslav
AU  - Vencl, Aleksandar
AU  - Mitrovic, Slobodan
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1566
AB  - Hybrid A356/SiCp/Gr(p) composites were produced via compo-casting using the A356 aluminum alloy as the composite matrix, with silicon carbide microparticles (SiCp) and graphite macroparticles (Gr(p)) as reinforcements. The effect of the thixocasting process on the microstructure of a modified A356 alloy (with 0.03 mass% of strontium) was considered. The microstructures of the thixocast A356 alloy and the synthesized composite materials were examined by means of optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS) and X-ray diffraction (XRD). The fracture surfaces of the composite matrix and the composites were also analyzed. The thixocast A356 alloy and the composites were subjected to artificial aging after a solution heat treatment. Aging kinetics was followed by hardness measurements. Differential scanning calorimetry (DSC) was applied to reveal the presence of phases formed during artificial aging. The composites reached maximum hardness faster than the thixocast A356 alloy. The time required to attain peak hardness decreases with the increase in the content of particulate reinforcements.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing
T1  - Microstructural characterization and artificial aging of compo-casted hybrid A356/SiCp/Gr(p) composites with graphite macroparticles
VL  - 612
SP  - 7
EP  - 15
DO  - 10.1016/j.msea.2014.06.028
ER  - 

@article{
author = "Bobić, Ilija and Ružić, Jovana and Bobić, Biljana and Babić, Miroslav and Vencl, Aleksandar and Mitrovic, Slobodan",
year = "2014",
abstract = "Hybrid A356/SiCp/Gr(p) composites were produced via compo-casting using the A356 aluminum alloy as the composite matrix, with silicon carbide microparticles (SiCp) and graphite macroparticles (Gr(p)) as reinforcements. The effect of the thixocasting process on the microstructure of a modified A356 alloy (with 0.03 mass% of strontium) was considered. The microstructures of the thixocast A356 alloy and the synthesized composite materials were examined by means of optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS) and X-ray diffraction (XRD). The fracture surfaces of the composite matrix and the composites were also analyzed. The thixocast A356 alloy and the composites were subjected to artificial aging after a solution heat treatment. Aging kinetics was followed by hardness measurements. Differential scanning calorimetry (DSC) was applied to reveal the presence of phases formed during artificial aging. The composites reached maximum hardness faster than the thixocast A356 alloy. The time required to attain peak hardness decreases with the increase in the content of particulate reinforcements.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing",
title = "Microstructural characterization and artificial aging of compo-casted hybrid A356/SiCp/Gr(p) composites with graphite macroparticles",
volume = "612",
pages = "7-15",
doi = "10.1016/j.msea.2014.06.028"
}

Bobić, I., Ružić, J., Bobić, B., Babić, M., Vencl, A.,& Mitrovic, S.. (2014). Microstructural characterization and artificial aging of compo-casted hybrid A356/SiCp/Gr(p) composites with graphite macroparticles. in Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing
Elsevier Science Sa, Lausanne., 612, 7-15.
https://doi.org/10.1016/j.msea.2014.06.028

Bobić I, Ružić J, Bobić B, Babić M, Vencl A, Mitrovic S. Microstructural characterization and artificial aging of compo-casted hybrid A356/SiCp/Gr(p) composites with graphite macroparticles. in Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing. 2014;612:7-15.
doi:10.1016/j.msea.2014.06.028 .

Bobić, Ilija, Ružić, Jovana, Bobić, Biljana, Babić, Miroslav, Vencl, Aleksandar, Mitrovic, Slobodan, "Microstructural characterization and artificial aging of compo-casted hybrid A356/SiCp/Gr(p) composites with graphite macroparticles" in Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 612 (2014):7-15,
https://doi.org/10.1016/j.msea.2014.06.028 . .

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 . .

TY  - JOUR
AU  - Gordic, Milan
AU  - Bucevac, Dusan
AU  - Ružić, Jovana
AU  - Gavrilovic, Suzana
AU  - Hercigonja, Radmila
AU  - Stanković, Miroslav
AU  - Matović, Branko
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1528
AB  - Biomorphous beta-SiC ceramics were produced from several species of wood such as ash, wild cherry, black alder, Persian walnut, sessile oak and European hornbeam. The wood was pyrolysed, impregnated with tetraethyl orthosilicate (TEOS) sol in repeated cycles and thermally treated at 1800 degrees C in vacuum. Four specimen groups included charcoal and three groups with 1, 3 and 5 cycles of impregnation were analyzed. Flexural and compressional strength of charcoal and woodlike SiC ceramics were measured using three-point and compression testing in different directions. Experimental results showed that mechanical properties of woodceramics were improved by repeating of impregnation cycles. Porosity measurement, dilatometric analysis, XRD and SEM analysis were used to study the macroscopical and microscopical properties of the resulting biomorphic SiC ceramics.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Biomimetic synthesis and properties of cellular SiC
VL  - 40
IS  - 2
SP  - 3699
EP  - 3705
DO  - 10.1016/j.ceramint.2013.09.054
ER  - 

@article{
author = "Gordic, Milan and Bucevac, Dusan and Ružić, Jovana and Gavrilovic, Suzana and Hercigonja, Radmila and Stanković, Miroslav and Matović, Branko",
year = "2014",
abstract = "Biomorphous beta-SiC ceramics were produced from several species of wood such as ash, wild cherry, black alder, Persian walnut, sessile oak and European hornbeam. The wood was pyrolysed, impregnated with tetraethyl orthosilicate (TEOS) sol in repeated cycles and thermally treated at 1800 degrees C in vacuum. Four specimen groups included charcoal and three groups with 1, 3 and 5 cycles of impregnation were analyzed. Flexural and compressional strength of charcoal and woodlike SiC ceramics were measured using three-point and compression testing in different directions. Experimental results showed that mechanical properties of woodceramics were improved by repeating of impregnation cycles. Porosity measurement, dilatometric analysis, XRD and SEM analysis were used to study the macroscopical and microscopical properties of the resulting biomorphic SiC ceramics.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Biomimetic synthesis and properties of cellular SiC",
volume = "40",
number = "2",
pages = "3699-3705",
doi = "10.1016/j.ceramint.2013.09.054"
}

Gordic, M., Bucevac, D., Ružić, J., Gavrilovic, S., Hercigonja, R., Stanković, M.,& Matović, B.. (2014). Biomimetic synthesis and properties of cellular SiC. in Ceramics International
Elsevier Sci Ltd, Oxford., 40(2), 3699-3705.
https://doi.org/10.1016/j.ceramint.2013.09.054

Gordic M, Bucevac D, Ružić J, Gavrilovic S, Hercigonja R, Stanković M, Matović B. Biomimetic synthesis and properties of cellular SiC. in Ceramics International. 2014;40(2):3699-3705.
doi:10.1016/j.ceramint.2013.09.054 .

Gordic, Milan, Bucevac, Dusan, Ružić, Jovana, Gavrilovic, Suzana, Hercigonja, Radmila, Stanković, Miroslav, Matović, Branko, "Biomimetic synthesis and properties of cellular SiC" in Ceramics International, 40, no. 2 (2014):3699-3705,
https://doi.org/10.1016/j.ceramint.2013.09.054 . .