Anđić, Zoran

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  • Anđić, Zoran (4)
  • Anđić, Zoran M. (1)
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Author's Bibliography

Treatment of dispersed iron-bearing raw materials and modeling of the protection systems against air-pollution

Anđić, Zoran; Korać, Marija; Kamberović, Željko

(Association of Metallurgical Engineers of Serbia, 2016)

TY  - JOUR
AU  - Anđić, Zoran
AU  - Korać, Marija
AU  - Kamberović, Željko
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3208
AB  - Based on the analysis of the non-standard iron-bearing raw materials treatment process and the results of real composition measurements of the flue gas, the study of hazards by identification of harmful substances that occur in the accident, as well as the modeling of the system of protection against air-pollution due to the cancellation of work the bag filter was carried out. Applying the model (Aloha software package) provides an overview of possible developments of events and zones of propagation of the precipitated particulate matter through the share of cadmium (Cd) in them. In the case of malfunction of filter system, emissions of particulate matter enormously exceed the permitted values. In the conditions of the simulated accident, particle velocity of flue gases was amounted E ≈ 738 mg/s or 2657 g/h of dust. The propagation of the precipitated particulate matter in the lower layer of the atmosphere, downwind, given trough the share of Cd in them, is 100 m from the source of pollution for the characteristic density of 5 mg/m2×day and 140m for the characteristic density of 2 mg/m2×day, in the stable state of the atmosphere, i.e. 870 m and 1100 m, respectively, in the neutral state of the atmosphere.
PB  - Association of Metallurgical Engineers of Serbia
T2  - Metallurgical & Materials Engineering
T1  - Treatment of dispersed iron-bearing raw materials and modeling of the protection systems against air-pollution
EP  - 311
IS  - 4
SP  - 303
VL  - 22
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3208
ER  - 
@article{
author = "Anđić, Zoran and Korać, Marija and Kamberović, Željko",
year = "2016",
abstract = "Based on the analysis of the non-standard iron-bearing raw materials treatment process and the results of real composition measurements of the flue gas, the study of hazards by identification of harmful substances that occur in the accident, as well as the modeling of the system of protection against air-pollution due to the cancellation of work the bag filter was carried out. Applying the model (Aloha software package) provides an overview of possible developments of events and zones of propagation of the precipitated particulate matter through the share of cadmium (Cd) in them. In the case of malfunction of filter system, emissions of particulate matter enormously exceed the permitted values. In the conditions of the simulated accident, particle velocity of flue gases was amounted E ≈ 738 mg/s or 2657 g/h of dust. The propagation of the precipitated particulate matter in the lower layer of the atmosphere, downwind, given trough the share of Cd in them, is 100 m from the source of pollution for the characteristic density of 5 mg/m2×day and 140m for the characteristic density of 2 mg/m2×day, in the stable state of the atmosphere, i.e. 870 m and 1100 m, respectively, in the neutral state of the atmosphere.",
publisher = "Association of Metallurgical Engineers of Serbia",
journal = "Metallurgical & Materials Engineering",
title = "Treatment of dispersed iron-bearing raw materials and modeling of the protection systems against air-pollution",
pages = "311-303",
number = "4",
volume = "22",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3208"
}
Anđić, Z., Korać, M.,& Kamberović, Ž.. (2016). Treatment of dispersed iron-bearing raw materials and modeling of the protection systems against air-pollution. in Metallurgical & Materials Engineering
Association of Metallurgical Engineers of Serbia., 22(4), 303-311.
https://hdl.handle.net/21.15107/rcub_technorep_3208
Anđić Z, Korać M, Kamberović Ž. Treatment of dispersed iron-bearing raw materials and modeling of the protection systems against air-pollution. in Metallurgical & Materials Engineering. 2016;22(4):303-311.
https://hdl.handle.net/21.15107/rcub_technorep_3208 .
Anđić, Zoran, Korać, Marija, Kamberović, Željko, "Treatment of dispersed iron-bearing raw materials and modeling of the protection systems against air-pollution" in Metallurgical & Materials Engineering, 22, no. 4 (2016):303-311,
https://hdl.handle.net/21.15107/rcub_technorep_3208 .

Conceptual design for treatment of mining and metallurgical wastewaters which contains arsenic and antimony

Kamberović, Željko; Korać, Marija; Anđić, Zoran; Štulović, Marija; Kovačević, Tihomir; Vujović, Aleksandar; Ilić, Ilija

(Association of Metallurgical Engineers of Serbia, 2012)

TY  - JOUR
AU  - Kamberović, Željko
AU  - Korać, Marija
AU  - Anđić, Zoran
AU  - Štulović, Marija
AU  - Kovačević, Tihomir
AU  - Vujović, Aleksandar
AU  - Ilić, Ilija
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2055
AB  - This paper presents a preliminary design for treatment of mining and metallurgical wastewaters (MMW) from the basin of antimony 'Zajača', which contains high concentrations of arsenic and antimony. MMW have been investigated in laboratory, due to large difference in concentrations of pollutants. Metallurgical wastewaters were treated using iron (II)-sulfate and lime milk used to adjust the pH value at 7. After chemical treatment of metallurgical wastewater and its joining with mining wastewater, residual amount of arsenic in water was below maximum allowed concentrations, while the concentration of antimony, remained above the maximum allowed value. The final phase of purification process was performed using ion exchange resin. After treatment of MMW, they can be used as technical water in the smelting process of secondary raw lead materials.
PB  - Association of Metallurgical Engineers of Serbia
T2  - Metallurgical & Materials Engineering
T1  - Conceptual design for treatment of mining and metallurgical wastewaters which contains arsenic and antimony
EP  - 331
IS  - 4
SP  - 321
VL  - 18
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2055
ER  - 
@article{
author = "Kamberović, Željko and Korać, Marija and Anđić, Zoran and Štulović, Marija and Kovačević, Tihomir and Vujović, Aleksandar and Ilić, Ilija",
year = "2012",
abstract = "This paper presents a preliminary design for treatment of mining and metallurgical wastewaters (MMW) from the basin of antimony 'Zajača', which contains high concentrations of arsenic and antimony. MMW have been investigated in laboratory, due to large difference in concentrations of pollutants. Metallurgical wastewaters were treated using iron (II)-sulfate and lime milk used to adjust the pH value at 7. After chemical treatment of metallurgical wastewater and its joining with mining wastewater, residual amount of arsenic in water was below maximum allowed concentrations, while the concentration of antimony, remained above the maximum allowed value. The final phase of purification process was performed using ion exchange resin. After treatment of MMW, they can be used as technical water in the smelting process of secondary raw lead materials.",
publisher = "Association of Metallurgical Engineers of Serbia",
journal = "Metallurgical & Materials Engineering",
title = "Conceptual design for treatment of mining and metallurgical wastewaters which contains arsenic and antimony",
pages = "331-321",
number = "4",
volume = "18",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2055"
}
Kamberović, Ž., Korać, M., Anđić, Z., Štulović, M., Kovačević, T., Vujović, A.,& Ilić, I.. (2012). Conceptual design for treatment of mining and metallurgical wastewaters which contains arsenic and antimony. in Metallurgical & Materials Engineering
Association of Metallurgical Engineers of Serbia., 18(4), 321-331.
https://hdl.handle.net/21.15107/rcub_technorep_2055
Kamberović Ž, Korać M, Anđić Z, Štulović M, Kovačević T, Vujović A, Ilić I. Conceptual design for treatment of mining and metallurgical wastewaters which contains arsenic and antimony. in Metallurgical & Materials Engineering. 2012;18(4):321-331.
https://hdl.handle.net/21.15107/rcub_technorep_2055 .
Kamberović, Željko, Korać, Marija, Anđić, Zoran, Štulović, Marija, Kovačević, Tihomir, Vujović, Aleksandar, Ilić, Ilija, "Conceptual design for treatment of mining and metallurgical wastewaters which contains arsenic and antimony" in Metallurgical & Materials Engineering, 18, no. 4 (2012):321-331,
https://hdl.handle.net/21.15107/rcub_technorep_2055 .

The analysis of the tribological properties of multiple strengthened nanocomposite of the Cu-Al2o3 system

Korać, Marija; Kamberović, Željko; Anđić, Zoran; Tasić, Miloš; Vujović, Aleksandar

(Savez inženjera metalurgije Srbije, Beograd, 2011)

TY  - JOUR
AU  - Korać, Marija
AU  - Kamberović, Željko
AU  - Anđić, Zoran
AU  - Tasić, Miloš
AU  - Vujović, Aleksandar
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1830
AB  - This paper presents the results of examined tribological properties of the multiple strengthened nanocomposite Cu-Al2O3 system. Cu-Al2O3 composite powder was obtained by combination of the thermo-chemical procedure and mechanical alloying, which is a completely new approach to synthesis of these materials. The synthesized powders were cold pressed with 940MPa and sintered in hydrogen atmosphere in temperature range of 725-925oC during 15-120 minutes. The samples were thermo-mechanically treated in two stages after sintering: cold rolling with the final reduction degree of 30% and annealing at 800oC for 1h in hydrogen atmosphere. Characterization of the sintered, rolled and annealed samples included the microstructural examination by scanning electron microscopy (SEM), the quantitative analysis of the SEM microphotographs and the examination on tribological properties. Tribological examinations have shown that the best wear resistance have the samples after heat treatment. The significant influence on the tribological properties has the effect of multiple strengthening mechanisms. These mechanisms include strengthening of copper matrix achieved by dispersion of fine particles of Al2O3, strengthening by the grain boundaries due of the appearance of nanosized Al2O3 particles and the CuxAlyOz phase, as well as by deformation strengthening and strengthening by annealing. Based on the results of the quantitative analysis and tribological examinations, it can be concluded that apart from these strengthening effects porosity also has a significant influence on the tribological properties, i.e. reduction of the volume share in porosity improves tribological properties.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metalurgija
T1  - The analysis of the tribological properties of multiple strengthened nanocomposite of the Cu-Al2o3 system
EP  - 55
IS  - 1
SP  - 49
VL  - 17
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1830
ER  - 
@article{
author = "Korać, Marija and Kamberović, Željko and Anđić, Zoran and Tasić, Miloš and Vujović, Aleksandar",
year = "2011",
abstract = "This paper presents the results of examined tribological properties of the multiple strengthened nanocomposite Cu-Al2O3 system. Cu-Al2O3 composite powder was obtained by combination of the thermo-chemical procedure and mechanical alloying, which is a completely new approach to synthesis of these materials. The synthesized powders were cold pressed with 940MPa and sintered in hydrogen atmosphere in temperature range of 725-925oC during 15-120 minutes. The samples were thermo-mechanically treated in two stages after sintering: cold rolling with the final reduction degree of 30% and annealing at 800oC for 1h in hydrogen atmosphere. Characterization of the sintered, rolled and annealed samples included the microstructural examination by scanning electron microscopy (SEM), the quantitative analysis of the SEM microphotographs and the examination on tribological properties. Tribological examinations have shown that the best wear resistance have the samples after heat treatment. The significant influence on the tribological properties has the effect of multiple strengthening mechanisms. These mechanisms include strengthening of copper matrix achieved by dispersion of fine particles of Al2O3, strengthening by the grain boundaries due of the appearance of nanosized Al2O3 particles and the CuxAlyOz phase, as well as by deformation strengthening and strengthening by annealing. Based on the results of the quantitative analysis and tribological examinations, it can be concluded that apart from these strengthening effects porosity also has a significant influence on the tribological properties, i.e. reduction of the volume share in porosity improves tribological properties.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metalurgija",
title = "The analysis of the tribological properties of multiple strengthened nanocomposite of the Cu-Al2o3 system",
pages = "55-49",
number = "1",
volume = "17",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1830"
}
Korać, M., Kamberović, Ž., Anđić, Z., Tasić, M.,& Vujović, A.. (2011). The analysis of the tribological properties of multiple strengthened nanocomposite of the Cu-Al2o3 system. in Metalurgija
Savez inženjera metalurgije Srbije, Beograd., 17(1), 49-55.
https://hdl.handle.net/21.15107/rcub_technorep_1830
Korać M, Kamberović Ž, Anđić Z, Tasić M, Vujović A. The analysis of the tribological properties of multiple strengthened nanocomposite of the Cu-Al2o3 system. in Metalurgija. 2011;17(1):49-55.
https://hdl.handle.net/21.15107/rcub_technorep_1830 .
Korać, Marija, Kamberović, Željko, Anđić, Zoran, Tasić, Miloš, Vujović, Aleksandar, "The analysis of the tribological properties of multiple strengthened nanocomposite of the Cu-Al2o3 system" in Metalurgija, 17, no. 1 (2011):49-55,
https://hdl.handle.net/21.15107/rcub_technorep_1830 .

Analysis of the properties of a Cu-Al2-O3 sintered system based on ultra fine and nanocomposite powders

Anđić, Zoran M.; Korać, Marija; Kamberović, Željko; Vujović, Aleksandar; Tasić, Miloš

(International Institute for the Science of Sintering, Beograd, 2007)

TY  - JOUR
AU  - Anđić, Zoran M.
AU  - Korać, Marija
AU  - Kamberović, Željko
AU  - Vujović, Aleksandar
AU  - Tasić, Miloš
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1071
AB  - In this paper synthesis of a composite based on Cu-Al2O3 by a thermo-chemical method is shown along with a comparative analysis of the properties of the obtained nanocomposite sintered samples, which are characterized by a good combination of electric-mechanical properties, suitable for work at elevated temperatures. Ultra fine and nanocrystal powder Cu-Al2O3 is obtained by a chemical method, starting from water solutions of nitrates up to achieving the requested composition with 3 and 5% of Al2O3. Synthesis of composite powders has been developed through several stages: drying by spraying, oxidation of the obtained powder of precursor and then reduction by hydrogen until the final composition of nanocomposite powder is achieved. After characterization of the obtained powders, which comprised examination by the Scanning Electronic Microscopy (SEM) method and X-ray-structure analysis (RDA), the powders were compacted with compacting pressure of 500 MPa. Sintering of the obtained samples was performed in the hydrogen atmosphere in isothermal conditions at temperatures of 800 and 900oC for 30, 60, 90 and 120 minutes. Characterization of the obtained Cu-Al2O3 of the nanocomposite sintered system comprised examination of microstructure by the Scanning Electronic Microscopy (SEM), as well as examining of electric mechanical properties. The obtained results show a homogenous distribution of dispersoides in the structure, as well as good mechanical and electric properties. .
AB  - U radu je prikazana sinteza kompozita na bazi Cu-Al2O3 termohemijskim putem uz uporednu analizu svojstava dobijenih nanokompozitnih sinterovanih uzoraka, koje karakteriše dobra kombinacija električna-mehanička svojstva, pogodnih za rad na povišenim temperaturama. Ultra fini i nanokristalni prah Cu-Al2O3 dobijen je hemijskim putem polazeći od vodenih rastvora nitrata do postizanja zahtevanog sastava sa 3 i 5% Al2O3. Sinteza kompozitnih prahova se odvijala kroz nekoliko faza: sušenje raspršivanjem, oksidacija dobijenog praha prekursora i zatim redukcija vodonikom do postizanje konačnog sastava nanokompozitnog praha.Nakon karakterizacije dobijenih prahova, koja je obuhvatila ispitivanja metodom skanirajuće elektronske mikroskopije (SEM) i rendgenostrukturne analize (RDA), vršeno je presovanje prahova pritiskom presovanja od 500 MPa. Sinterovanje dobijenih uzoraka vršeno je u atmosferi vodonika u izotermskim uslovima na temperaturama 800 i 900o C u toku 30, 60, 90 i 120 minuta. Karakterizacija dobijenog Cu-Al2O3 nanokompozitnog sinterovanog sistema je obuhvatila ispitivanja mikrostrukture skanirajućom elektronskom mikroskopijom, kao i ispitivanja električnih i mehaničkih svojstava. Dobijeni rezultati pokazuju homogenu raspodelu disperzoida u strukturi, kao i dobre mehaničke i električne osobine. .
PB  - International Institute for the Science of Sintering, Beograd
T2  - Science of Sintering
T1  - Analysis of the properties of a Cu-Al2-O3 sintered system based on ultra fine and nanocomposite powders
EP  - 152
IS  - 2
SP  - 145
VL  - 39
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1071
ER  - 
@article{
author = "Anđić, Zoran M. and Korać, Marija and Kamberović, Željko and Vujović, Aleksandar and Tasić, Miloš",
year = "2007",
abstract = "In this paper synthesis of a composite based on Cu-Al2O3 by a thermo-chemical method is shown along with a comparative analysis of the properties of the obtained nanocomposite sintered samples, which are characterized by a good combination of electric-mechanical properties, suitable for work at elevated temperatures. Ultra fine and nanocrystal powder Cu-Al2O3 is obtained by a chemical method, starting from water solutions of nitrates up to achieving the requested composition with 3 and 5% of Al2O3. Synthesis of composite powders has been developed through several stages: drying by spraying, oxidation of the obtained powder of precursor and then reduction by hydrogen until the final composition of nanocomposite powder is achieved. After characterization of the obtained powders, which comprised examination by the Scanning Electronic Microscopy (SEM) method and X-ray-structure analysis (RDA), the powders were compacted with compacting pressure of 500 MPa. Sintering of the obtained samples was performed in the hydrogen atmosphere in isothermal conditions at temperatures of 800 and 900oC for 30, 60, 90 and 120 minutes. Characterization of the obtained Cu-Al2O3 of the nanocomposite sintered system comprised examination of microstructure by the Scanning Electronic Microscopy (SEM), as well as examining of electric mechanical properties. The obtained results show a homogenous distribution of dispersoides in the structure, as well as good mechanical and electric properties. ., U radu je prikazana sinteza kompozita na bazi Cu-Al2O3 termohemijskim putem uz uporednu analizu svojstava dobijenih nanokompozitnih sinterovanih uzoraka, koje karakteriše dobra kombinacija električna-mehanička svojstva, pogodnih za rad na povišenim temperaturama. Ultra fini i nanokristalni prah Cu-Al2O3 dobijen je hemijskim putem polazeći od vodenih rastvora nitrata do postizanja zahtevanog sastava sa 3 i 5% Al2O3. Sinteza kompozitnih prahova se odvijala kroz nekoliko faza: sušenje raspršivanjem, oksidacija dobijenog praha prekursora i zatim redukcija vodonikom do postizanje konačnog sastava nanokompozitnog praha.Nakon karakterizacije dobijenih prahova, koja je obuhvatila ispitivanja metodom skanirajuće elektronske mikroskopije (SEM) i rendgenostrukturne analize (RDA), vršeno je presovanje prahova pritiskom presovanja od 500 MPa. Sinterovanje dobijenih uzoraka vršeno je u atmosferi vodonika u izotermskim uslovima na temperaturama 800 i 900o C u toku 30, 60, 90 i 120 minuta. Karakterizacija dobijenog Cu-Al2O3 nanokompozitnog sinterovanog sistema je obuhvatila ispitivanja mikrostrukture skanirajućom elektronskom mikroskopijom, kao i ispitivanja električnih i mehaničkih svojstava. Dobijeni rezultati pokazuju homogenu raspodelu disperzoida u strukturi, kao i dobre mehaničke i električne osobine. .",
publisher = "International Institute for the Science of Sintering, Beograd",
journal = "Science of Sintering",
title = "Analysis of the properties of a Cu-Al2-O3 sintered system based on ultra fine and nanocomposite powders",
pages = "152-145",
number = "2",
volume = "39",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1071"
}
Anđić, Z. M., Korać, M., Kamberović, Ž., Vujović, A.,& Tasić, M.. (2007). Analysis of the properties of a Cu-Al2-O3 sintered system based on ultra fine and nanocomposite powders. in Science of Sintering
International Institute for the Science of Sintering, Beograd., 39(2), 145-152.
https://hdl.handle.net/21.15107/rcub_technorep_1071
Anđić ZM, Korać M, Kamberović Ž, Vujović A, Tasić M. Analysis of the properties of a Cu-Al2-O3 sintered system based on ultra fine and nanocomposite powders. in Science of Sintering. 2007;39(2):145-152.
https://hdl.handle.net/21.15107/rcub_technorep_1071 .
Anđić, Zoran M., Korać, Marija, Kamberović, Željko, Vujović, Aleksandar, Tasić, Miloš, "Analysis of the properties of a Cu-Al2-O3 sintered system based on ultra fine and nanocomposite powders" in Science of Sintering, 39, no. 2 (2007):145-152,
https://hdl.handle.net/21.15107/rcub_technorep_1071 .
16
17

Sintering of Cu-Al2O3 nano-composite powders produced by a thermochemical route

Korać, Marija; Anđić, Zoran; Tasić, Miloš; Kamberović, Željko

(Serbian Chemical Society, Belgrade, 2007)

TY  - JOUR
AU  - Korać, Marija
AU  - Anđić, Zoran
AU  - Tasić, Miloš
AU  - Kamberović, Željko
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1178
AB  - This paper presents the synthesis of nano-composite Cu-Al2O3 powder by a thermochemical method and sintering, with a comparative analysis of the mechanical and electrical properties of the obtained solid samples. Nano-crystalline Cu-Al2O3 powders were produced by a thermochemical method through the following stages: spray-drying, oxidation of the precursor powder, reduction by hydrogen and homogenization. Characterization of powders included analytical electron microscopy (AEM) coupled with energy dispersive spectroscopy (EDS), differential thermal and thermogravimetric (DTA-TGA) analysis and X-ray diffraction (XRD) analysis. The size of the produced powders was 20-50 nm, with a noticeable presence of agglomerates. The composite powders were characterized by a homogenous distribution of Al2O3 in a copper matrix. The powders were cold pressed at a pressure of 500 MPa and sintered in a hydrogen atmosphere under isothermal conditions in the temperature range from 800 to 900 °C for up to 120 min. Characterization of the Cu-Al2O3 sintered system included determination of the density, relative volume change, electrical and mechanical properties, examination of the microstructure by SEM and focused ion beam (FIB) analysis, as well as by EDS. The obtained nano-composite, the structure of which was, with certain changes, preserved in the final structure, provided a sintered material with a homogeneous distribution of dispersoid in a copper matrix, with exceptional effects of reinforcement and an excellent combination of mechanical and electrical properties.
AB  - U ovom radu predstavljena je sinteza nano-kompozitnog praha Cu-Al2O3 termohemijskom metodom i sinterovanjem, uz uporednu analizu mehaničkih i električnih svojstava dobijenih čvrstih uzoraka. Nano-kristalni Cu-Al2O3 prahovi dobijeni su termohemijskom metodom u sledećim koracima: sušenje raspršivanjem, oksidacija polaznih prahova, redukcija vodonikom i homogenizacija. Prahovi su okarakterisani analitičkom elektronskom mikroskopijom (AEM) spregnutom sa spektroskopijom energije rasejanja (EDS), diferencijalnom termijskom i termogravimetrijskom analizom (DTA-TGA) i difrakcijom X-zraka (XRD). Veličina čestica dobijenih prahova iznosila je 20-50 nm, uz znatno prisustvo aglomerata. Kompozitni prahovi karakterišu se homogenom raspodelom Al2O3 u bakarnoj matrici. Prahovi su presovani na hladno pritiskom od 500 MPa i sinterovani u atmosferi vodonika pod izotermskim uslovima u temperaturnom opsegu od 800 do 900 °C u trajanju do 120 min. Karakterizacija Cu-Al2O3 sinterovanog sistema uključivala je određivanje gustine, relativne promene zapremine, električnih i mehaničkih svojstava, ispitivanje mikrostrukture tehnikom SEM, analizom pomoću usmerenog jonskog snopa (FIB) i tehnikom EDS. Dobijeni nano-kompozit, čija je struktura, uz izvesne promene, prisutna i u konačnoj strukturi sinterovanog materijala, omogućava homogenu raspodelu disperzoida u bakarnoj matrici sinterovanog materijala, sa izraženim efektima ojačanja, i odličnu kombinaciju mehaničkih i električnih svojstava.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Sintering of Cu-Al2O3 nano-composite powders produced by a thermochemical route
T1  - Sinterovanje nano-kompozitnih prahova Cu-Al2O3 dobijenih termohemijskih postupkom
EP  - 1125
IS  - 11
SP  - 1115
VL  - 72
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1178
ER  - 
@article{
author = "Korać, Marija and Anđić, Zoran and Tasić, Miloš and Kamberović, Željko",
year = "2007",
abstract = "This paper presents the synthesis of nano-composite Cu-Al2O3 powder by a thermochemical method and sintering, with a comparative analysis of the mechanical and electrical properties of the obtained solid samples. Nano-crystalline Cu-Al2O3 powders were produced by a thermochemical method through the following stages: spray-drying, oxidation of the precursor powder, reduction by hydrogen and homogenization. Characterization of powders included analytical electron microscopy (AEM) coupled with energy dispersive spectroscopy (EDS), differential thermal and thermogravimetric (DTA-TGA) analysis and X-ray diffraction (XRD) analysis. The size of the produced powders was 20-50 nm, with a noticeable presence of agglomerates. The composite powders were characterized by a homogenous distribution of Al2O3 in a copper matrix. The powders were cold pressed at a pressure of 500 MPa and sintered in a hydrogen atmosphere under isothermal conditions in the temperature range from 800 to 900 °C for up to 120 min. Characterization of the Cu-Al2O3 sintered system included determination of the density, relative volume change, electrical and mechanical properties, examination of the microstructure by SEM and focused ion beam (FIB) analysis, as well as by EDS. The obtained nano-composite, the structure of which was, with certain changes, preserved in the final structure, provided a sintered material with a homogeneous distribution of dispersoid in a copper matrix, with exceptional effects of reinforcement and an excellent combination of mechanical and electrical properties., U ovom radu predstavljena je sinteza nano-kompozitnog praha Cu-Al2O3 termohemijskom metodom i sinterovanjem, uz uporednu analizu mehaničkih i električnih svojstava dobijenih čvrstih uzoraka. Nano-kristalni Cu-Al2O3 prahovi dobijeni su termohemijskom metodom u sledećim koracima: sušenje raspršivanjem, oksidacija polaznih prahova, redukcija vodonikom i homogenizacija. Prahovi su okarakterisani analitičkom elektronskom mikroskopijom (AEM) spregnutom sa spektroskopijom energije rasejanja (EDS), diferencijalnom termijskom i termogravimetrijskom analizom (DTA-TGA) i difrakcijom X-zraka (XRD). Veličina čestica dobijenih prahova iznosila je 20-50 nm, uz znatno prisustvo aglomerata. Kompozitni prahovi karakterišu se homogenom raspodelom Al2O3 u bakarnoj matrici. Prahovi su presovani na hladno pritiskom od 500 MPa i sinterovani u atmosferi vodonika pod izotermskim uslovima u temperaturnom opsegu od 800 do 900 °C u trajanju do 120 min. Karakterizacija Cu-Al2O3 sinterovanog sistema uključivala je određivanje gustine, relativne promene zapremine, električnih i mehaničkih svojstava, ispitivanje mikrostrukture tehnikom SEM, analizom pomoću usmerenog jonskog snopa (FIB) i tehnikom EDS. Dobijeni nano-kompozit, čija je struktura, uz izvesne promene, prisutna i u konačnoj strukturi sinterovanog materijala, omogućava homogenu raspodelu disperzoida u bakarnoj matrici sinterovanog materijala, sa izraženim efektima ojačanja, i odličnu kombinaciju mehaničkih i električnih svojstava.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Sintering of Cu-Al2O3 nano-composite powders produced by a thermochemical route, Sinterovanje nano-kompozitnih prahova Cu-Al2O3 dobijenih termohemijskih postupkom",
pages = "1125-1115",
number = "11",
volume = "72",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1178"
}
Korać, M., Anđić, Z., Tasić, M.,& Kamberović, Ž.. (2007). Sintering of Cu-Al2O3 nano-composite powders produced by a thermochemical route. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 72(11), 1115-1125.
https://hdl.handle.net/21.15107/rcub_technorep_1178
Korać M, Anđić Z, Tasić M, Kamberović Ž. Sintering of Cu-Al2O3 nano-composite powders produced by a thermochemical route. in Journal of the Serbian Chemical Society. 2007;72(11):1115-1125.
https://hdl.handle.net/21.15107/rcub_technorep_1178 .
Korać, Marija, Anđić, Zoran, Tasić, Miloš, Kamberović, Željko, "Sintering of Cu-Al2O3 nano-composite powders produced by a thermochemical route" in Journal of the Serbian Chemical Society, 72, no. 11 (2007):1115-1125,
https://hdl.handle.net/21.15107/rcub_technorep_1178 .
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