TY  - JOUR
AU  - Anđić, Zoran
AU  - Korać, Marija
AU  - Kamberović, Željko
AU  - Vujović, Aleksandar
AU  - Tasić, Miloš
PY  - 2007
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5058
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.
PB  - International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Analysis of the Properties of a Cu-Al2O3 Sintered System based on Ultra Fine and Nanocomposite Powders
VL  - 39
SP  - 145
EP  - 152
DO  - 10.2298/SOS0702145A
ER  - 

@article{
author = "Anđić, Zoran 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.",
publisher = "International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Analysis of the Properties of a Cu-Al2O3 Sintered System based on Ultra Fine and Nanocomposite Powders",
volume = "39",
pages = "145-152",
doi = "10.2298/SOS0702145A"
}

Anđić, Z., Korać, M., Kamberović, Ž., Vujović, A.,& Tasić, M.. (2007). Analysis of the Properties of a Cu-Al2O3 Sintered System based on Ultra Fine and Nanocomposite Powders. in Science of Sintering
International Institute for the Science of Sintering., 39, 145-152.
https://doi.org/10.2298/SOS0702145A

Anđić Z, Korać M, Kamberović Ž, Vujović A, Tasić M. Analysis of the Properties of a Cu-Al2O3 Sintered System based on Ultra Fine and Nanocomposite Powders. in Science of Sintering. 2007;39:145-152.
doi:10.2298/SOS0702145A .

Anđić, Zoran, Korać, Marija, Kamberović, Željko, Vujović, Aleksandar, Tasić, Miloš, "Analysis of the Properties of a Cu-Al2O3 Sintered System based on Ultra Fine and Nanocomposite Powders" in Science of Sintering, 39 (2007):145-152,
https://doi.org/10.2298/SOS0702145A . .

TY  - JOUR
AU  - Korać, Marija
AU  - Anđić, Zoran
AU  - Tasić, Miloš
AU  - Kamberović, Željko
PY  - 2007
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5083
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), differenttial 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, presserved in the final structure, provided a sintered material with a homogenеous distribution of dispersoid in a copper matrix,
with exceptional effects of reinforcement and an excellent combination of mechanical and electrical properties.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Sintering of Cu–Al2O3 nano-composite powders produced by a thermochemical route
VL  - 72
IS  - 11
SP  - 1115
EP  - 1125
DO  - doi: 10.2998/JSC0711115K
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), differenttial 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, presserved in the final structure, provided a sintered material with a homogenеous distribution of dispersoid in a copper matrix,
with exceptional effects of reinforcement and an excellent combination of mechanical and electrical properties.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Sintering of Cu–Al2O3 nano-composite powders produced by a thermochemical route",
volume = "72",
number = "11",
pages = "1115-1125",
doi = "doi: 10.2998/JSC0711115K"
}

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
Belgrade : Serbian Chemical Society., 72(11), 1115-1125.
https://doi.org/doi: 10.2998/JSC0711115K

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.
doi:doi: 10.2998/JSC0711115K .

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://doi.org/doi: 10.2998/JSC0711115K . .

TY  - JOUR
AU  - Anđić, Zoran
AU  - Korać, Marija
AU  - Tasić, Miloš
AU  - Kamberović, Željko
AU  - Raić, Karlo
PY  - 2007
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5337
AB  - By hydrometallurgy and powder metallurgy along with prognosis of physicalchemical
properties, a synthesis of new improved materials can be successfully
performed with in advance pre-set properties which is conditioned by a quality of
starting powders i.e. by improving their structure. In accordance with that, this paper
presents synthesis of the nanocomposite Cu-Al2O3 powder by thermochemical method
and sintering with a comparative analysis of the mechanical and electrical properties of
obtained solid samples. Nanocrystaline Cu-Al2O3 powders were produced by
thermochemical method through following stages: spray-drying, oxidation of precursor
powder, reduction by hydrogen and homogenisation. Characterization of powders
included differential-thermal and thermo-gravimetric analysis (DTA-TGA), X-raydiffraction
(XRD) and analytical electron microscopy (AEM) coupled with energetic
dispersive spectroscopy (EDS). Size of produced powders was 20-50nm with noticable
presence of agglomerates. Composite powders are characterized with Al2O3 homogenous
distribution in copper matrix. Powders were cold pressed with pressure of 500 MPa and
sintered. Sintering of the obtained samples was performed in the hydrogen atmosphere in
isothermal conditions at temperature range from 800 to 900oC and time up to 120
minutes. Characterization of Cu-Al2O3 sintered system included examination of density,
relative volume change, electrical and mechanical properties, examination of
microstructure by SEM analysis, as well as by EDS. The obtained nanocomposite, which
structure is with certain changes preserved in final structure, has provided sintered
material with homogenous distribution of dispersoide in copper matrix, with exceptional
effects of reinforcing and excellent combination of mechanical and electrical properties.
PB  - Association of Metallurgical Engineers of Serbia AMES
T2  - Metalurgija - Journal of Metallurgy
T1  - Synthesis and  sintering of Cu-Al2O3 nanocomposite powders produced by a thermochemical route
VL  - 13
IS  - 1
SP  - 71
EP  - 81
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5337
ER  - 

@article{
author = "Anđić, Zoran and Korać, Marija and Tasić, Miloš and Kamberović, Željko and Raić, Karlo",
year = "2007",
abstract = "By hydrometallurgy and powder metallurgy along with prognosis of physicalchemical
properties, a synthesis of new improved materials can be successfully
performed with in advance pre-set properties which is conditioned by a quality of
starting powders i.e. by improving their structure. In accordance with that, this paper
presents synthesis of the nanocomposite Cu-Al2O3 powder by thermochemical method
and sintering with a comparative analysis of the mechanical and electrical properties of
obtained solid samples. Nanocrystaline Cu-Al2O3 powders were produced by
thermochemical method through following stages: spray-drying, oxidation of precursor
powder, reduction by hydrogen and homogenisation. Characterization of powders
included differential-thermal and thermo-gravimetric analysis (DTA-TGA), X-raydiffraction
(XRD) and analytical electron microscopy (AEM) coupled with energetic
dispersive spectroscopy (EDS). Size of produced powders was 20-50nm with noticable
presence of agglomerates. Composite powders are characterized with Al2O3 homogenous
distribution in copper matrix. Powders were cold pressed with pressure of 500 MPa and
sintered. Sintering of the obtained samples was performed in the hydrogen atmosphere in
isothermal conditions at temperature range from 800 to 900oC and time up to 120
minutes. Characterization of Cu-Al2O3 sintered system included examination of density,
relative volume change, electrical and mechanical properties, examination of
microstructure by SEM analysis, as well as by EDS. The obtained nanocomposite, which
structure is with certain changes preserved in final structure, has provided sintered
material with homogenous distribution of dispersoide in copper matrix, with exceptional
effects of reinforcing and excellent combination of mechanical and electrical properties.",
publisher = "Association of Metallurgical Engineers of Serbia AMES",
journal = "Metalurgija - Journal of Metallurgy",
title = "Synthesis and  sintering of Cu-Al2O3 nanocomposite powders produced by a thermochemical route",
volume = "13",
number = "1",
pages = "71-81",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5337"
}

Anđić, Z., Korać, M., Tasić, M., Kamberović, Ž.,& Raić, K.. (2007). Synthesis and  sintering of Cu-Al2O3 nanocomposite powders produced by a thermochemical route. in Metalurgija - Journal of Metallurgy
Association of Metallurgical Engineers of Serbia AMES., 13(1), 71-81.
https://hdl.handle.net/21.15107/rcub_cherry_5337

Anđić Z, Korać M, Tasić M, Kamberović Ž, Raić K. Synthesis and  sintering of Cu-Al2O3 nanocomposite powders produced by a thermochemical route. in Metalurgija - Journal of Metallurgy. 2007;13(1):71-81.
https://hdl.handle.net/21.15107/rcub_cherry_5337 .

Anđić, Zoran, Korać, Marija, Tasić, Miloš, Kamberović, Željko, Raić, Karlo, "Synthesis and  sintering of Cu-Al2O3 nanocomposite powders produced by a thermochemical route" in Metalurgija - Journal of Metallurgy, 13, no. 1 (2007):71-81,
https://hdl.handle.net/21.15107/rcub_cherry_5337 .

TY  - THES
AU  - Anđić, Zoran
PY  - 2007
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5316
AB  - Ultra fini i nanokompozitni prahovi na bazi bakra, srebra i glinice mogu se vrlo uspešno koristiti za dobijanje disperzno ojačanih sinterovanih polikristalnih materijala sa submikronskom, odnosno nanokristalnom strukturom, koje karakteriše dobra kombinacija električna svojstva-mehanička svojstva, i koji nalaze široku primenu u oblasti elektronike i elektrotehnike.
U skladu sa tim, u okviru ove doktorske disertacije dat je prikaz rezultata istraživanja dobijenih pri izučavanju sinterovanih sistema na bazi ultra finih i nano prahova teških metala i glinice. Sinteza dvokomponentnog nanokompozitnog Cu-Al2O3 praha izvršena je termohemijskim postupkom, polazeći od vodenih rastvora Cu(NO3)2 i Al(NO3)3, kao i mehaničkim legiranjem komercijalnog praha bakra dobijenog elektrolitičkim postupkom i prethodno sintetisane glinice sol-gel metodom. Trokomponentni Cu-Ag-Al2O3 prah dobijen je mehaničkim legiranjem prethodno sintetisanog nanokompozitnog Cu-Al2O3 praha termohemijskim postupkom i praha srebra dobijenog hemijskim putem, odnosno Cu-Ag praha dobijenog termohemijskim postupkom. Nakon karakterizacije dobijenih prahova, koja je obuhvatila hemijsku analizu, diferencijalnotermijsku i termogravimetrijsku (DT/TG) analizu, rendgenostrukturnu analizu (RDA), određivanje specifične površine čestica, nasipne gustine, tečljivosti, oblika, veličine i raspodele veličine čestica, kao i mikrostrukturna ispitivanja skanirajućom elektronskom mikroskopijom (SEM) i analitičkom elektronskom mikroskopijom (AEM) povezanom sa energetskom disperzivnom spektroskopijom (EDS), vršeno je presovanje prahova pritiskom presovanja od 500MPa. Sinterovanje dobijenih uzoraka      Cu-Al2O3 sistema vršeno je u atmosferi vodonika u izotermskim uslovima u temperaturnom opsegu 800-1000oC u toku 15-120 minuta. Trokomponentni Cu-Ag-Al2O3 sistem sinterovan je u atmosferi vodonika u temperaturnom opsegu 600-800oC u toku 15-120 minuta. Karakterizacija dobijenih sinterovanih sistema obuhvatila je ispitivanja gustine, relativne promene zapremine, električnih i mehaničkih svojstava, kao i ispitivanja mikrostrukture skanirajućom elektronskom mikroskopijom (SEM), energetskom disperzivnom spektroskopijom (EDS), transmisionom elektronskom mikroskopijom (TEM) i transmisionom elektronskom mikroskopijom visoke rezolucije (HRTEM), ispitivanja metodom fokusiranja snopa jona (FIB – Focused Ion Beam) i  ispitivanja selktovanih difrakcionih polja (SADP – Selected Area Diffraction Pattern).
Dobijeni nanokompozitni prahovi, čija je struktura uz izvesne promene očuvana u strukturi krajnjeg proizvoda, obezbedili su dobijanje sinterovanih sistema sa homogenom raspodelom disperzoida, izuzetnim efektima ojačavanja i dobrom kombinacijom mehanička-električna svojstva. Uporednom analizom svojstava dobijenih sinterovanih sistema uočljivo je da su kod sistema na bazi Cu-Al2O3 nanokompozitnog praha sintetisanog temohemijskim postupkom u odnosu na ostale ispitivane sisteme postignuti značajniji efekti ojačavanja uz strukturnu stabilizaciju sistema na nižim temperaturama i u toku kraćih vremena sinterovanja.
PB  - Универзитет у Београду, Технолошко-металуршки факултет
T2  - Универзитет у Београду
T1  - Sinterovani sistemi na bazi nano prahova teških metala i glinice
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5316
ER  - 

@phdthesis{
author = "Anđić, Zoran",
year = "2007",
abstract = "Ultra fini i nanokompozitni prahovi na bazi bakra, srebra i glinice mogu se vrlo uspešno koristiti za dobijanje disperzno ojačanih sinterovanih polikristalnih materijala sa submikronskom, odnosno nanokristalnom strukturom, koje karakteriše dobra kombinacija električna svojstva-mehanička svojstva, i koji nalaze široku primenu u oblasti elektronike i elektrotehnike.
U skladu sa tim, u okviru ove doktorske disertacije dat je prikaz rezultata istraživanja dobijenih pri izučavanju sinterovanih sistema na bazi ultra finih i nano prahova teških metala i glinice. Sinteza dvokomponentnog nanokompozitnog Cu-Al2O3 praha izvršena je termohemijskim postupkom, polazeći od vodenih rastvora Cu(NO3)2 i Al(NO3)3, kao i mehaničkim legiranjem komercijalnog praha bakra dobijenog elektrolitičkim postupkom i prethodno sintetisane glinice sol-gel metodom. Trokomponentni Cu-Ag-Al2O3 prah dobijen je mehaničkim legiranjem prethodno sintetisanog nanokompozitnog Cu-Al2O3 praha termohemijskim postupkom i praha srebra dobijenog hemijskim putem, odnosno Cu-Ag praha dobijenog termohemijskim postupkom. Nakon karakterizacije dobijenih prahova, koja je obuhvatila hemijsku analizu, diferencijalnotermijsku i termogravimetrijsku (DT/TG) analizu, rendgenostrukturnu analizu (RDA), određivanje specifične površine čestica, nasipne gustine, tečljivosti, oblika, veličine i raspodele veličine čestica, kao i mikrostrukturna ispitivanja skanirajućom elektronskom mikroskopijom (SEM) i analitičkom elektronskom mikroskopijom (AEM) povezanom sa energetskom disperzivnom spektroskopijom (EDS), vršeno je presovanje prahova pritiskom presovanja od 500MPa. Sinterovanje dobijenih uzoraka      Cu-Al2O3 sistema vršeno je u atmosferi vodonika u izotermskim uslovima u temperaturnom opsegu 800-1000oC u toku 15-120 minuta. Trokomponentni Cu-Ag-Al2O3 sistem sinterovan je u atmosferi vodonika u temperaturnom opsegu 600-800oC u toku 15-120 minuta. Karakterizacija dobijenih sinterovanih sistema obuhvatila je ispitivanja gustine, relativne promene zapremine, električnih i mehaničkih svojstava, kao i ispitivanja mikrostrukture skanirajućom elektronskom mikroskopijom (SEM), energetskom disperzivnom spektroskopijom (EDS), transmisionom elektronskom mikroskopijom (TEM) i transmisionom elektronskom mikroskopijom visoke rezolucije (HRTEM), ispitivanja metodom fokusiranja snopa jona (FIB – Focused Ion Beam) i  ispitivanja selktovanih difrakcionih polja (SADP – Selected Area Diffraction Pattern).
Dobijeni nanokompozitni prahovi, čija je struktura uz izvesne promene očuvana u strukturi krajnjeg proizvoda, obezbedili su dobijanje sinterovanih sistema sa homogenom raspodelom disperzoida, izuzetnim efektima ojačavanja i dobrom kombinacijom mehanička-električna svojstva. Uporednom analizom svojstava dobijenih sinterovanih sistema uočljivo je da su kod sistema na bazi Cu-Al2O3 nanokompozitnog praha sintetisanog temohemijskim postupkom u odnosu na ostale ispitivane sisteme postignuti značajniji efekti ojačavanja uz strukturnu stabilizaciju sistema na nižim temperaturama i u toku kraćih vremena sinterovanja.",
publisher = "Универзитет у Београду, Технолошко-металуршки факултет",
journal = "Универзитет у Београду",
title = "Sinterovani sistemi na bazi nano prahova teških metala i glinice",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5316"
}

Anđić, Z.. (2007). Sinterovani sistemi na bazi nano prahova teških metala i glinice. in Универзитет у Београду
Универзитет у Београду, Технолошко-металуршки факултет..
https://hdl.handle.net/21.15107/rcub_cherry_5316

Anđić Z. Sinterovani sistemi na bazi nano prahova teških metala i glinice. in Универзитет у Београду. 2007;.
https://hdl.handle.net/21.15107/rcub_cherry_5316 .

Anđić, Zoran, "Sinterovani sistemi na bazi nano prahova teških metala i glinice" in Универзитет у Београду (2007),
https://hdl.handle.net/21.15107/rcub_cherry_5316 .