TY  - JOUR
AU  - Vuksanović, Marija M.
AU  - Tomić, Nataša
AU  - Algellai, Ahmed A.
AU  - Balanč, Bojana
AU  - Radovanović, Željko
AU  - Trifunović, Dejan
AU  - Jančić-Heinemann, Radmila
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4296
AB  - Composite materials based on UV-curing acrylates and various alumina-based reinforcements represent material that is suitable for the use in dentistry, but also in other areas. Composites were made using four different types of reinforcement of chemically very similar compositions, but different size and morphologies. In order to monitor the mechanical properties of the composite material, samples were made in the form of discs of defined dimensions suitable for polymerization under UV light. The subject of this study is the examination of the mechanical properties of the Bis-GMA (Bisphenol A glycidyl methacrylate)/TEGDMA (trimethylene glycol dimethacrylate) photopolymer composite material as a matrix. The reinforcements were in the form of commercial nanoparticles and alumina whiskers and their influence on mechanical properties were compared with the influence of synthesized alumina particles doped with iron oxide synthesized sol-gel technique. In order to test the mechanical properties of composite materials, the Brazilian Tests and the testing of the microhardness of samples were employed.
AB  - Kompozitni materijali na bazi fotopolimerizujućih akrilata i različitih ojačanja na bazi aluminijum-oksida predstavljaju materijal koji je pogodan za upotrebu u stomatologiji, ali i u drugim oblastima. Kompoziti su napravljeni korišćenjem četiri različita tipa ojačanja hemijski veoma sličnih sastava, ali različite veličine i morfologije. Da bi se pratila mehanička svojstva kompozitnog materijala napravljeni su uzorci u formi diskova definisanih dimenzija pogodni za polimerizaciju pod dejstvom UV svetlosti. Predmet ovog istraživanja je ispitivanje mehaničkih svojstava fotopolimerizujućeg kompozitnog materijala na bazi Bis-GMA (Bisfenol A glicidilmetakrilata)/TEGDMA (trietilen glikol dimetakrilata) kao matrice. Ojačanja su bila u formi komercijalnih nanočestica i viskersa aluminijum-oksida i njihov uticaj na mehanička svojstva upoređen je sa uticajem sintetisanih čestica na bazi aluminijum-oksida dopiranih gvožđe oksidom sintetisanih sol gel tehnikom. Za ispitivanje mehaničkih svojstava kompozitnih materijala korišćen je Brazilski test i ispitivanje tvrdoće uzoraka.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Examination of mechanical properties of acrilyc composite materials with different AL2O3 reinforcement by brazil test
T1  - Ispitivanje mehaničkih svojstava akrilatnih kompozitnih materijala sa različitim AL2O3 ojačanjima brazilskim testom
EP  - 14
IS  - 1
SP  - 9
VL  - 74
DO  - 10.5937/tehnika1901009V
ER  - 

@article{
author = "Vuksanović, Marija M. and Tomić, Nataša and Algellai, Ahmed A. and Balanč, Bojana and Radovanović, Željko and Trifunović, Dejan and Jančić-Heinemann, Radmila",
year = "2019",
abstract = "Composite materials based on UV-curing acrylates and various alumina-based reinforcements represent material that is suitable for the use in dentistry, but also in other areas. Composites were made using four different types of reinforcement of chemically very similar compositions, but different size and morphologies. In order to monitor the mechanical properties of the composite material, samples were made in the form of discs of defined dimensions suitable for polymerization under UV light. The subject of this study is the examination of the mechanical properties of the Bis-GMA (Bisphenol A glycidyl methacrylate)/TEGDMA (trimethylene glycol dimethacrylate) photopolymer composite material as a matrix. The reinforcements were in the form of commercial nanoparticles and alumina whiskers and their influence on mechanical properties were compared with the influence of synthesized alumina particles doped with iron oxide synthesized sol-gel technique. In order to test the mechanical properties of composite materials, the Brazilian Tests and the testing of the microhardness of samples were employed., Kompozitni materijali na bazi fotopolimerizujućih akrilata i različitih ojačanja na bazi aluminijum-oksida predstavljaju materijal koji je pogodan za upotrebu u stomatologiji, ali i u drugim oblastima. Kompoziti su napravljeni korišćenjem četiri različita tipa ojačanja hemijski veoma sličnih sastava, ali različite veličine i morfologije. Da bi se pratila mehanička svojstva kompozitnog materijala napravljeni su uzorci u formi diskova definisanih dimenzija pogodni za polimerizaciju pod dejstvom UV svetlosti. Predmet ovog istraživanja je ispitivanje mehaničkih svojstava fotopolimerizujućeg kompozitnog materijala na bazi Bis-GMA (Bisfenol A glicidilmetakrilata)/TEGDMA (trietilen glikol dimetakrilata) kao matrice. Ojačanja su bila u formi komercijalnih nanočestica i viskersa aluminijum-oksida i njihov uticaj na mehanička svojstva upoređen je sa uticajem sintetisanih čestica na bazi aluminijum-oksida dopiranih gvožđe oksidom sintetisanih sol gel tehnikom. Za ispitivanje mehaničkih svojstava kompozitnih materijala korišćen je Brazilski test i ispitivanje tvrdoće uzoraka.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Examination of mechanical properties of acrilyc composite materials with different AL2O3 reinforcement by brazil test, Ispitivanje mehaničkih svojstava akrilatnih kompozitnih materijala sa različitim AL2O3 ojačanjima brazilskim testom",
pages = "14-9",
number = "1",
volume = "74",
doi = "10.5937/tehnika1901009V"
}

Vuksanović, M. M., Tomić, N., Algellai, A. A., Balanč, B., Radovanović, Ž., Trifunović, D.,& Jančić-Heinemann, R.. (2019). Examination of mechanical properties of acrilyc composite materials with different AL2O3 reinforcement by brazil test. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 74(1), 9-14.
https://doi.org/10.5937/tehnika1901009V

Vuksanović MM, Tomić N, Algellai AA, Balanč B, Radovanović Ž, Trifunović D, Jančić-Heinemann R. Examination of mechanical properties of acrilyc composite materials with different AL2O3 reinforcement by brazil test. in Tehnika. 2019;74(1):9-14.
doi:10.5937/tehnika1901009V .

Vuksanović, Marija M., Tomić, Nataša, Algellai, Ahmed A., Balanč, Bojana, Radovanović, Željko, Trifunović, Dejan, Jančić-Heinemann, Radmila, "Examination of mechanical properties of acrilyc composite materials with different AL2O3 reinforcement by brazil test" in Tehnika, 74, no. 1 (2019):9-14,
https://doi.org/10.5937/tehnika1901009V . .

TY  - JOUR
AU  - Tomić, Nataša
AU  - Algellai, Ahmed A.
AU  - Vuksanović, Marija M.
AU  - Trifunović, Dejan
AU  - Dimitrijević, Silvana
AU  - Obradović-Đuričić, Kosovka
AU  - Jančić-Heinemann, Radmila
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3814
AB  - The subject of this study is the quantitative adhesion of a UV-curing composite film based on Bis-GMA (Bisphenol A glycidylmethacrylate) / TEGDMA (triethylene glycol dimethacrylate) as a matrix and particles doped with ferrous oxide on a metal substrate. Two different metal substrates: silver and gold-spattered brass with nickel intermediate coating were used in adhesion evaluating. Adhesion was measured using micro-identation and it was compared with the measured wetting angle of composites to the substrate. It has been shown that the substrates, although with similar mechanical properties that are reflected in very close hardness values, differ by achieved adhesive bonding with the polymer UV-cured polymer film. The addition of ceramic particles in the polymer matrix increased the adhesion of the composite film to both substrates, but the adhesion trend was dependent on the substrate type.
AB  - Predmet ovog istraživanja je kvantitativna procena adhezije između fotopolimerizujućeg kompozitnog filma na bazi Bis-GMA (Bisfenol A glicidilmetakrilata)/TEGDMA (trietilen glikol dimetakrilata) kao matrice i čestica na bazi aluminijum oksida dopiranih gvožđem na metalnoj podlozi. Korišćene su dve različite metalne podloge, jedna od srebra (u daljem tekstu 'srebro') i jedna pozlaćena mesingana pločica sa međuprevlakom od nikla (u daljem tekstu 'zlato'). Adhezija je merena korišćenjem mikroindentacije i upoređena je sa izmerenim uglom kvašenja kompozita na datim podlogama. Pokazalo se da se podloge, iako sličnih mehaničkih svojstava koje se ogledaju u veoma bliskim vrednostima tvrdoće, razlikuju po ostvarenoj adhezivnoj vezi sa polimernim fotopolimerizujućim filmom. Dodatak keramičkih čestica u polimernu matricu dodatno je povećao adheziju kompozitnog filma na obe podloge, dok je trend adhezije u zavisnosti od tipa podloge održan.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Examination of the adhesion of polymer composite films based on Bis-GMA/TEGDMA on different metal substrates
T1  - Ispitivanje adhezije polimernih kompozitnih filmova na bazi Bis-GMA/TEGDMA na različitim metalnim podlogama
EP  - 222
IS  - 2
SP  - 218
VL  - 73
DO  - 10.5937/tehnika1802218T
ER  - 

@article{
author = "Tomić, Nataša and Algellai, Ahmed A. and Vuksanović, Marija M. and Trifunović, Dejan and Dimitrijević, Silvana and Obradović-Đuričić, Kosovka and Jančić-Heinemann, Radmila",
year = "2018",
abstract = "The subject of this study is the quantitative adhesion of a UV-curing composite film based on Bis-GMA (Bisphenol A glycidylmethacrylate) / TEGDMA (triethylene glycol dimethacrylate) as a matrix and particles doped with ferrous oxide on a metal substrate. Two different metal substrates: silver and gold-spattered brass with nickel intermediate coating were used in adhesion evaluating. Adhesion was measured using micro-identation and it was compared with the measured wetting angle of composites to the substrate. It has been shown that the substrates, although with similar mechanical properties that are reflected in very close hardness values, differ by achieved adhesive bonding with the polymer UV-cured polymer film. The addition of ceramic particles in the polymer matrix increased the adhesion of the composite film to both substrates, but the adhesion trend was dependent on the substrate type., Predmet ovog istraživanja je kvantitativna procena adhezije između fotopolimerizujućeg kompozitnog filma na bazi Bis-GMA (Bisfenol A glicidilmetakrilata)/TEGDMA (trietilen glikol dimetakrilata) kao matrice i čestica na bazi aluminijum oksida dopiranih gvožđem na metalnoj podlozi. Korišćene su dve različite metalne podloge, jedna od srebra (u daljem tekstu 'srebro') i jedna pozlaćena mesingana pločica sa međuprevlakom od nikla (u daljem tekstu 'zlato'). Adhezija je merena korišćenjem mikroindentacije i upoređena je sa izmerenim uglom kvašenja kompozita na datim podlogama. Pokazalo se da se podloge, iako sličnih mehaničkih svojstava koje se ogledaju u veoma bliskim vrednostima tvrdoće, razlikuju po ostvarenoj adhezivnoj vezi sa polimernim fotopolimerizujućim filmom. Dodatak keramičkih čestica u polimernu matricu dodatno je povećao adheziju kompozitnog filma na obe podloge, dok je trend adhezije u zavisnosti od tipa podloge održan.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Examination of the adhesion of polymer composite films based on Bis-GMA/TEGDMA on different metal substrates, Ispitivanje adhezije polimernih kompozitnih filmova na bazi Bis-GMA/TEGDMA na različitim metalnim podlogama",
pages = "222-218",
number = "2",
volume = "73",
doi = "10.5937/tehnika1802218T"
}

Tomić, N., Algellai, A. A., Vuksanović, M. M., Trifunović, D., Dimitrijević, S., Obradović-Đuričić, K.,& Jančić-Heinemann, R.. (2018). Examination of the adhesion of polymer composite films based on Bis-GMA/TEGDMA on different metal substrates. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 73(2), 218-222.
https://doi.org/10.5937/tehnika1802218T

Tomić N, Algellai AA, Vuksanović MM, Trifunović D, Dimitrijević S, Obradović-Đuričić K, Jančić-Heinemann R. Examination of the adhesion of polymer composite films based on Bis-GMA/TEGDMA on different metal substrates. in Tehnika. 2018;73(2):218-222.
doi:10.5937/tehnika1802218T .

Tomić, Nataša, Algellai, Ahmed A., Vuksanović, Marija M., Trifunović, Dejan, Dimitrijević, Silvana, Obradović-Đuričić, Kosovka, Jančić-Heinemann, Radmila, "Examination of the adhesion of polymer composite films based on Bis-GMA/TEGDMA on different metal substrates" in Tehnika, 73, no. 2 (2018):218-222,
https://doi.org/10.5937/tehnika1802218T . .

TY  - JOUR
AU  - Tomić, Nataša
AU  - Vuksanović, Marija M.
AU  - Međo, Bojan
AU  - Rakin, Marko
AU  - Trifunović, Dejan
AU  - Stojanović, Dušica
AU  - Uskoković, Petar
AU  - Jančić-Heinemann, Radmila
AU  - Radojević, Vesna
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3860
AB  - A thermoplastic pultrusion process was examined using commercial fiber roving of PET/E glass, to determine the optimum pulling speed and optimal zonal temperatures. Finite element analysis predicted heat transfer through the commingled fibers and air in the pultrusion die. The cross-section of obtained rods was examined, and image analysis was carried out to obtain information about the degree of fiber impregnation, number of voids and uniformity of fiber distribution. Optimizing the temperature field for the pultrusion of poly (ethylene terephthalate) is of significant importance. The pulling speed has the same importance. These two parameters are closely related as evidenced by the analysis of images.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical & Materials Engineering
T1  - Optimizing the thermal gradient and the pulling speed in a thermoplastic pultrusion process of pet/e glass fibers using finite element method
EP  - 112
IS  - 2
SP  - 103
VL  - 24
DO  - 10.30544/367
ER  - 

@article{
author = "Tomić, Nataša and Vuksanović, Marija M. and Međo, Bojan and Rakin, Marko and Trifunović, Dejan and Stojanović, Dušica and Uskoković, Petar and Jančić-Heinemann, Radmila and Radojević, Vesna",
year = "2018",
abstract = "A thermoplastic pultrusion process was examined using commercial fiber roving of PET/E glass, to determine the optimum pulling speed and optimal zonal temperatures. Finite element analysis predicted heat transfer through the commingled fibers and air in the pultrusion die. The cross-section of obtained rods was examined, and image analysis was carried out to obtain information about the degree of fiber impregnation, number of voids and uniformity of fiber distribution. Optimizing the temperature field for the pultrusion of poly (ethylene terephthalate) is of significant importance. The pulling speed has the same importance. These two parameters are closely related as evidenced by the analysis of images.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical & Materials Engineering",
title = "Optimizing the thermal gradient and the pulling speed in a thermoplastic pultrusion process of pet/e glass fibers using finite element method",
pages = "112-103",
number = "2",
volume = "24",
doi = "10.30544/367"
}

Tomić, N., Vuksanović, M. M., Međo, B., Rakin, M., Trifunović, D., Stojanović, D., Uskoković, P., Jančić-Heinemann, R.,& Radojević, V.. (2018). Optimizing the thermal gradient and the pulling speed in a thermoplastic pultrusion process of pet/e glass fibers using finite element method. in Metallurgical & Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 24(2), 103-112.
https://doi.org/10.30544/367

Tomić N, Vuksanović MM, Međo B, Rakin M, Trifunović D, Stojanović D, Uskoković P, Jančić-Heinemann R, Radojević V. Optimizing the thermal gradient and the pulling speed in a thermoplastic pultrusion process of pet/e glass fibers using finite element method. in Metallurgical & Materials Engineering. 2018;24(2):103-112.
doi:10.30544/367 .

Tomić, Nataša, Vuksanović, Marija M., Međo, Bojan, Rakin, Marko, Trifunović, Dejan, Stojanović, Dušica, Uskoković, Petar, Jančić-Heinemann, Radmila, Radojević, Vesna, "Optimizing the thermal gradient and the pulling speed in a thermoplastic pultrusion process of pet/e glass fibers using finite element method" in Metallurgical & Materials Engineering, 24, no. 2 (2018):103-112,
https://doi.org/10.30544/367 . .

TY  - JOUR
AU  - Perišić, Srđan
AU  - Petrović, Miloš
AU  - Bjelajac, Anđelika
AU  - Marinković, Aleksandar
AU  - Stojanović, Dušica
AU  - Trifunović, Dejan
AU  - Radojević, Vesna
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3217
AB  - In this paper, the impact of wood fiber surface modification on mechanical properties of poly-(methyl methacrylate)(PMMA)-wood composite was examined. FTIR analysis has shown that the wood fiber surface modification was accomplished and that the matrix-fiber bond was established. The SEM image of the breakage surface has affirmed the improved adhesion between the fibers and the polymer in the specimen with modified wood fibers. The bond improvement between the wood fibers and the matrix results in increased hardness and a better distribution of strain within the composite. High speed impact testing results have shown that the specimen with the bonding agent can increase the absorbed energy six times when compared to the pure PMMA specimen.
AB  - U ovom radu izvršeno je ispitivanje uticaja modifikacije površine drvenih vlakana na mehanička svojstva kompozita poli-(metil metakrilat)(PMMA)- drvo. FTIR analiza je pokazala da je postignuta modifikacija površine drvenih vlakana, kao i da je ostvarena veza matrica-vlakno. SEM snimak površine loma uzorka takođe potvrđuje bolju adheziju vlakana i polimera u uzorku sa modifikovanim vlaknima drveta. Poboljšanje veze između drvenih vlakana i matrice omogućava veću čvrstoću i bolji prenos opterećenja unutar kompozita. Rezultati ispitivanja udarom kontrolisane energije pokazali su da uzorak sa vezujućim agensom može da poveća apsorbovanu energiju i do šest puta u odnosu na čist PMMA.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - The impact of wood fiber surface modification on physical properties of wood-polymer composites
T1  - Uticaj modifikacije površine vlakana drveta na mehanička svojstva kompozita polimer-drvo
EP  - 662
IS  - 5
SP  - 659
VL  - 71
DO  - 10.5937/tehnika1605659P
ER  - 

@article{
author = "Perišić, Srđan and Petrović, Miloš and Bjelajac, Anđelika and Marinković, Aleksandar and Stojanović, Dušica and Trifunović, Dejan and Radojević, Vesna",
year = "2016",
abstract = "In this paper, the impact of wood fiber surface modification on mechanical properties of poly-(methyl methacrylate)(PMMA)-wood composite was examined. FTIR analysis has shown that the wood fiber surface modification was accomplished and that the matrix-fiber bond was established. The SEM image of the breakage surface has affirmed the improved adhesion between the fibers and the polymer in the specimen with modified wood fibers. The bond improvement between the wood fibers and the matrix results in increased hardness and a better distribution of strain within the composite. High speed impact testing results have shown that the specimen with the bonding agent can increase the absorbed energy six times when compared to the pure PMMA specimen., U ovom radu izvršeno je ispitivanje uticaja modifikacije površine drvenih vlakana na mehanička svojstva kompozita poli-(metil metakrilat)(PMMA)- drvo. FTIR analiza je pokazala da je postignuta modifikacija površine drvenih vlakana, kao i da je ostvarena veza matrica-vlakno. SEM snimak površine loma uzorka takođe potvrđuje bolju adheziju vlakana i polimera u uzorku sa modifikovanim vlaknima drveta. Poboljšanje veze između drvenih vlakana i matrice omogućava veću čvrstoću i bolji prenos opterećenja unutar kompozita. Rezultati ispitivanja udarom kontrolisane energije pokazali su da uzorak sa vezujućim agensom može da poveća apsorbovanu energiju i do šest puta u odnosu na čist PMMA.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "The impact of wood fiber surface modification on physical properties of wood-polymer composites, Uticaj modifikacije površine vlakana drveta na mehanička svojstva kompozita polimer-drvo",
pages = "662-659",
number = "5",
volume = "71",
doi = "10.5937/tehnika1605659P"
}

Perišić, S., Petrović, M., Bjelajac, A., Marinković, A., Stojanović, D., Trifunović, D.,& Radojević, V.. (2016). The impact of wood fiber surface modification on physical properties of wood-polymer composites. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 71(5), 659-662.
https://doi.org/10.5937/tehnika1605659P

Perišić S, Petrović M, Bjelajac A, Marinković A, Stojanović D, Trifunović D, Radojević V. The impact of wood fiber surface modification on physical properties of wood-polymer composites. in Tehnika. 2016;71(5):659-662.
doi:10.5937/tehnika1605659P .

Perišić, Srđan, Petrović, Miloš, Bjelajac, Anđelika, Marinković, Aleksandar, Stojanović, Dušica, Trifunović, Dejan, Radojević, Vesna, "The impact of wood fiber surface modification on physical properties of wood-polymer composites" in Tehnika, 71, no. 5 (2016):659-662,
https://doi.org/10.5937/tehnika1605659P . .

TY  - JOUR
AU  - Dimitrijević, Silvana
AU  - Rajčić-Vujasinović, Mirjana M.
AU  - Trifunović, Dejan
AU  - Trumić, Biserka
AU  - Stević, Zoran
AU  - Dimitrijević, Stevan
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3224
AB  - The aim of this work was to investigate the effects of current density, temperature, pH and concentration of ethyl-hexilsulfonate additive on the microhardness of electrochemically deposited gold decorative coatings obtained from a conventional cyanide electrolyte and gold complex based on mercaptotriazole. Mechanically and chemically prepared brass samples were first nickeled from acidic electrolyte. Nickel was a substrate deposit, and then decorative gold coatings were deposited from two types of electrolytes at different current densities and temperatures. Decorative gold coatings were deposited from auri-mercaptotrizole at different pH values and from electrolyte with and without the ethylhexilsulfonate additive. The microhardness of the gold coating was measured using the Knoop method. The highest values of microhardness were obtained at a current density of 1 A dm(-2) at room temperature for both electrolytes. The microhardness of the gold coatings from cyanide electrolytes was HK = 740 MPa, and the coatings obtained from auri-mercaptotriazole HK = 660 MPa. This difference is not relevant for decorative purposes. The highest values of microhardness, HK = 660 MPa, were obtained at pH = 9 from the gold complex based on mercaptotriazole without the additive.
PB  - Carl Hanser Verlag, Munich
T2  - International Journal of Materials Research
T1  - Microhardness of decorative gold coatings obtained from gold complex based on mercaptotriazole: Comparison with cyanide
EP  - 630
IS  - 7
SP  - 624
VL  - 107
DO  - 10.3139/146.111382
ER  - 

@article{
author = "Dimitrijević, Silvana and Rajčić-Vujasinović, Mirjana M. and Trifunović, Dejan and Trumić, Biserka and Stević, Zoran and Dimitrijević, Stevan",
year = "2016",
abstract = "The aim of this work was to investigate the effects of current density, temperature, pH and concentration of ethyl-hexilsulfonate additive on the microhardness of electrochemically deposited gold decorative coatings obtained from a conventional cyanide electrolyte and gold complex based on mercaptotriazole. Mechanically and chemically prepared brass samples were first nickeled from acidic electrolyte. Nickel was a substrate deposit, and then decorative gold coatings were deposited from two types of electrolytes at different current densities and temperatures. Decorative gold coatings were deposited from auri-mercaptotrizole at different pH values and from electrolyte with and without the ethylhexilsulfonate additive. The microhardness of the gold coating was measured using the Knoop method. The highest values of microhardness were obtained at a current density of 1 A dm(-2) at room temperature for both electrolytes. The microhardness of the gold coatings from cyanide electrolytes was HK = 740 MPa, and the coatings obtained from auri-mercaptotriazole HK = 660 MPa. This difference is not relevant for decorative purposes. The highest values of microhardness, HK = 660 MPa, were obtained at pH = 9 from the gold complex based on mercaptotriazole without the additive.",
publisher = "Carl Hanser Verlag, Munich",
journal = "International Journal of Materials Research",
title = "Microhardness of decorative gold coatings obtained from gold complex based on mercaptotriazole: Comparison with cyanide",
pages = "630-624",
number = "7",
volume = "107",
doi = "10.3139/146.111382"
}

Dimitrijević, S., Rajčić-Vujasinović, M. M., Trifunović, D., Trumić, B., Stević, Z.,& Dimitrijević, S.. (2016). Microhardness of decorative gold coatings obtained from gold complex based on mercaptotriazole: Comparison with cyanide. in International Journal of Materials Research
Carl Hanser Verlag, Munich., 107(7), 624-630.
https://doi.org/10.3139/146.111382

Dimitrijević S, Rajčić-Vujasinović MM, Trifunović D, Trumić B, Stević Z, Dimitrijević S. Microhardness of decorative gold coatings obtained from gold complex based on mercaptotriazole: Comparison with cyanide. in International Journal of Materials Research. 2016;107(7):624-630.
doi:10.3139/146.111382 .

Dimitrijević, Silvana, Rajčić-Vujasinović, Mirjana M., Trifunović, Dejan, Trumić, Biserka, Stević, Zoran, Dimitrijević, Stevan, "Microhardness of decorative gold coatings obtained from gold complex based on mercaptotriazole: Comparison with cyanide" in International Journal of Materials Research, 107, no. 7 (2016):624-630,
https://doi.org/10.3139/146.111382 . .

TY  - JOUR
AU  - Dimitrijević, Marija
AU  - Dojčinović, Marina
AU  - Trifunović, Dejan
AU  - Volkov-Husović, Tatjana
AU  - Jančić-Heinemann, Radmila
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3373
AB  - The surface defects on the samples, which are based on alumina, exposed to thermal shocks and cavitations erosion were analyzed using image analysis. For both types of experimental testing, the samples are made of the same shape and size. The specimens contain different amounts of alumina fibers (samples without fiber and with of 1 and 2 wt.% of the fibers). The surface defects were characterized by their morphological parameters determined using image analysis procedure. Sixteen parameters are used for the image analysis. The results show that the damage caused by thermal shocks and cavitations were different and the greatest difference was in roundness and fractal dimension.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Comparison of Morphological Parameters of Ceramic Materials Surface Damage Exposed to Thermal Shock and Cavitation Erosion
EP  - 377
IS  - 3
SP  - 371
VL  - 48
DO  - 10.2298/SOS1603371D
ER  - 

@article{
author = "Dimitrijević, Marija and Dojčinović, Marina and Trifunović, Dejan and Volkov-Husović, Tatjana and Jančić-Heinemann, Radmila",
year = "2016",
abstract = "The surface defects on the samples, which are based on alumina, exposed to thermal shocks and cavitations erosion were analyzed using image analysis. For both types of experimental testing, the samples are made of the same shape and size. The specimens contain different amounts of alumina fibers (samples without fiber and with of 1 and 2 wt.% of the fibers). The surface defects were characterized by their morphological parameters determined using image analysis procedure. Sixteen parameters are used for the image analysis. The results show that the damage caused by thermal shocks and cavitations were different and the greatest difference was in roundness and fractal dimension.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Comparison of Morphological Parameters of Ceramic Materials Surface Damage Exposed to Thermal Shock and Cavitation Erosion",
pages = "377-371",
number = "3",
volume = "48",
doi = "10.2298/SOS1603371D"
}

Dimitrijević, M., Dojčinović, M., Trifunović, D., Volkov-Husović, T.,& Jančić-Heinemann, R.. (2016). Comparison of Morphological Parameters of Ceramic Materials Surface Damage Exposed to Thermal Shock and Cavitation Erosion. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 48(3), 371-377.
https://doi.org/10.2298/SOS1603371D

Dimitrijević M, Dojčinović M, Trifunović D, Volkov-Husović T, Jančić-Heinemann R. Comparison of Morphological Parameters of Ceramic Materials Surface Damage Exposed to Thermal Shock and Cavitation Erosion. in Science of Sintering. 2016;48(3):371-377.
doi:10.2298/SOS1603371D .

Dimitrijević, Marija, Dojčinović, Marina, Trifunović, Dejan, Volkov-Husović, Tatjana, Jančić-Heinemann, Radmila, "Comparison of Morphological Parameters of Ceramic Materials Surface Damage Exposed to Thermal Shock and Cavitation Erosion" in Science of Sintering, 48, no. 3 (2016):371-377,
https://doi.org/10.2298/SOS1603371D . .

TY  - JOUR
AU  - Perišić, Srđan
AU  - Awhida, Ahmed
AU  - Radojević, Vesna
AU  - Davidović, Dejan
AU  - Trifunović, Dejan
AU  - Jančić-Heinemann, Radmila
AU  - Aleksić, Radoslav
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2913
AB  - The mathematical model for heat transfer during the Bridgeman crystal growth, using the finite element method and the obtained result are presented. Some modifications to the method were introduced in order to incorporate the data obtained experimentally. Solving the model enabled comparison of the experimental and numerical data and to obtain sufficient accuracy. The model was used to calculate the temperature gradient in the sample and the calculated gradient was in accordance with the observed crystal growth regime.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical & Materials Engineering
T1  - Numerical simulation of temperature field in the vertical bridgman method crystal growth
EP  - 33
IS  - 1
SP  - 25
VL  - 21
DO  - 10.30544/130
ER  - 

@article{
author = "Perišić, Srđan and Awhida, Ahmed and Radojević, Vesna and Davidović, Dejan and Trifunović, Dejan and Jančić-Heinemann, Radmila and Aleksić, Radoslav",
year = "2015",
abstract = "The mathematical model for heat transfer during the Bridgeman crystal growth, using the finite element method and the obtained result are presented. Some modifications to the method were introduced in order to incorporate the data obtained experimentally. Solving the model enabled comparison of the experimental and numerical data and to obtain sufficient accuracy. The model was used to calculate the temperature gradient in the sample and the calculated gradient was in accordance with the observed crystal growth regime.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical & Materials Engineering",
title = "Numerical simulation of temperature field in the vertical bridgman method crystal growth",
pages = "33-25",
number = "1",
volume = "21",
doi = "10.30544/130"
}

Perišić, S., Awhida, A., Radojević, V., Davidović, D., Trifunović, D., Jančić-Heinemann, R.,& Aleksić, R.. (2015). Numerical simulation of temperature field in the vertical bridgman method crystal growth. in Metallurgical & Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 21(1), 25-33.
https://doi.org/10.30544/130

Perišić S, Awhida A, Radojević V, Davidović D, Trifunović D, Jančić-Heinemann R, Aleksić R. Numerical simulation of temperature field in the vertical bridgman method crystal growth. in Metallurgical & Materials Engineering. 2015;21(1):25-33.
doi:10.30544/130 .

Perišić, Srđan, Awhida, Ahmed, Radojević, Vesna, Davidović, Dejan, Trifunović, Dejan, Jančić-Heinemann, Radmila, Aleksić, Radoslav, "Numerical simulation of temperature field in the vertical bridgman method crystal growth" in Metallurgical & Materials Engineering, 21, no. 1 (2015):25-33,
https://doi.org/10.30544/130 . .

TY  - JOUR
AU  - Dimitrijević, Silvana
AU  - Rajčić-Vujasinović, Mirjana M.
AU  - Jančić-Heinemann, Radmila
AU  - Bajat, Jelena
AU  - Trujić, Vlastimir
AU  - Trifunović, Dejan
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2778
AB  - The aim of this work was to investigate the effect of temperature on the thickness, surface roughness, visual appearance and morphology of electrochemically deposited gold decorative coatings obtained from conventional cyanide electrolyte (AUROCIN DPB) and electrolyte based on mercaptotriazole (Au-MT). Heating of cyanide electrolyte does not significantly affect the thickness (b) of gold coatings (at 20 degrees C b = 0.08 mu m, at 30 degrees C b = 0.07 mu m and at 40 degrees C b = 0.08 mu m) and, for this reason, the decorative coating processes were carried out at room temperature. Temperature increase has a positive effect on thickness of decorative gold coatings obtained from electrolyte based on mercaptotriazole, but this effect is very small, so the heating of electrolyte is not recommended for this type of electrolyte (at 20 degrees C b = 0.08 mu m, at 40 degrees C b = 0.12 mu m and at 60 degrees C b = 0.13 mu m). The best coating roughness profiles are obtained at a temperature of 20 degrees C for both types of electrolyte. The morphology of gold deposits, obtained from both electrolytes, was studied using scanning electron microscopy.
PB  - Carl Hanser Verlag, Munich
T2  - International Journal of Materials Research
T1  - Temperature effect on decorative gold coatings obtained from electrolyte based on mercaptotriazole - comparison with cyanide
EP  - 281
IS  - 3
SP  - 272
VL  - 105
DO  - 10.3139/146.111017
ER  - 

@article{
author = "Dimitrijević, Silvana and Rajčić-Vujasinović, Mirjana M. and Jančić-Heinemann, Radmila and Bajat, Jelena and Trujić, Vlastimir and Trifunović, Dejan",
year = "2014",
abstract = "The aim of this work was to investigate the effect of temperature on the thickness, surface roughness, visual appearance and morphology of electrochemically deposited gold decorative coatings obtained from conventional cyanide electrolyte (AUROCIN DPB) and electrolyte based on mercaptotriazole (Au-MT). Heating of cyanide electrolyte does not significantly affect the thickness (b) of gold coatings (at 20 degrees C b = 0.08 mu m, at 30 degrees C b = 0.07 mu m and at 40 degrees C b = 0.08 mu m) and, for this reason, the decorative coating processes were carried out at room temperature. Temperature increase has a positive effect on thickness of decorative gold coatings obtained from electrolyte based on mercaptotriazole, but this effect is very small, so the heating of electrolyte is not recommended for this type of electrolyte (at 20 degrees C b = 0.08 mu m, at 40 degrees C b = 0.12 mu m and at 60 degrees C b = 0.13 mu m). The best coating roughness profiles are obtained at a temperature of 20 degrees C for both types of electrolyte. The morphology of gold deposits, obtained from both electrolytes, was studied using scanning electron microscopy.",
publisher = "Carl Hanser Verlag, Munich",
journal = "International Journal of Materials Research",
title = "Temperature effect on decorative gold coatings obtained from electrolyte based on mercaptotriazole - comparison with cyanide",
pages = "281-272",
number = "3",
volume = "105",
doi = "10.3139/146.111017"
}

Dimitrijević, S., Rajčić-Vujasinović, M. M., Jančić-Heinemann, R., Bajat, J., Trujić, V.,& Trifunović, D.. (2014). Temperature effect on decorative gold coatings obtained from electrolyte based on mercaptotriazole - comparison with cyanide. in International Journal of Materials Research
Carl Hanser Verlag, Munich., 105(3), 272-281.
https://doi.org/10.3139/146.111017

Dimitrijević S, Rajčić-Vujasinović MM, Jančić-Heinemann R, Bajat J, Trujić V, Trifunović D. Temperature effect on decorative gold coatings obtained from electrolyte based on mercaptotriazole - comparison with cyanide. in International Journal of Materials Research. 2014;105(3):272-281.
doi:10.3139/146.111017 .

Dimitrijević, Silvana, Rajčić-Vujasinović, Mirjana M., Jančić-Heinemann, Radmila, Bajat, Jelena, Trujić, Vlastimir, Trifunović, Dejan, "Temperature effect on decorative gold coatings obtained from electrolyte based on mercaptotriazole - comparison with cyanide" in International Journal of Materials Research, 105, no. 3 (2014):272-281,
https://doi.org/10.3139/146.111017 . .

TY  - JOUR
AU  - Radojević, Vesna
AU  - Nedeljković, Dragutin
AU  - Talijan, Nadežda
AU  - Trifunović, Dejan
AU  - Aleksić, Radoslav
PY  - 2004
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/689
AB  - The investigated system for optical fiber sensor was multi-mode optical fiber with magnetic composite coating. Polymer component of composite coating was poly (ethylene-co-vinyl acetate)-EVA, and the magnetic component was powder of SmCo5 permanent magnet in form of single domain particles. The influence of the applied external magnetic field on the change of intensity of the light signal propagated through optical fiber was investigated.
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of Magnetism and Magnetic Materials
T1  - Optical fibers with composite magnetic coating for magnetic field sensing
EP  - E1756
SP  - E1755
VL  - 272
DO  - 10.1016/j.jmmm.2003.12.1330
ER  - 

@article{
author = "Radojević, Vesna and Nedeljković, Dragutin and Talijan, Nadežda and Trifunović, Dejan and Aleksić, Radoslav",
year = "2004",
abstract = "The investigated system for optical fiber sensor was multi-mode optical fiber with magnetic composite coating. Polymer component of composite coating was poly (ethylene-co-vinyl acetate)-EVA, and the magnetic component was powder of SmCo5 permanent magnet in form of single domain particles. The influence of the applied external magnetic field on the change of intensity of the light signal propagated through optical fiber was investigated.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of Magnetism and Magnetic Materials",
title = "Optical fibers with composite magnetic coating for magnetic field sensing",
pages = "E1756-E1755",
volume = "272",
doi = "10.1016/j.jmmm.2003.12.1330"
}

Radojević, V., Nedeljković, D., Talijan, N., Trifunović, D.,& Aleksić, R.. (2004). Optical fibers with composite magnetic coating for magnetic field sensing. in Journal of Magnetism and Magnetic Materials
Elsevier Science Bv, Amsterdam., 272, E1755-E1756.
https://doi.org/10.1016/j.jmmm.2003.12.1330

Radojević V, Nedeljković D, Talijan N, Trifunović D, Aleksić R. Optical fibers with composite magnetic coating for magnetic field sensing. in Journal of Magnetism and Magnetic Materials. 2004;272:E1755-E1756.
doi:10.1016/j.jmmm.2003.12.1330 .

Radojević, Vesna, Nedeljković, Dragutin, Talijan, Nadežda, Trifunović, Dejan, Aleksić, Radoslav, "Optical fibers with composite magnetic coating for magnetic field sensing" in Journal of Magnetism and Magnetic Materials, 272 (2004):E1755-E1756,
https://doi.org/10.1016/j.jmmm.2003.12.1330 . .

TY  - JOUR
AU  - Jančić, Radmila
AU  - Trifunović, Dejan
AU  - Kotanjac, Željko
AU  - Mitraković, Dragan
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/550
AB  - The procedure for measuring the thickness of anticorrosion protective layer of zinc on steel is given. The metallographic images are used for this measurement. Results are statistically handled and results are used to determine the uniformity of the thickness of the layer. The procedure was used to determine the quality of protective layers obtained form specimens produced by two different producers.
AB  - Dat je prikaz postupka merenja debljine zaštitnog sloja cinka na čeliku korišćenjem programa za analizu slike. Na metalografskim snimcima preseka zaštitnog sloja cinka na čeliku merene su debljine zaštitnog sloja i potom su podaci statistički obrađeni. Rezultati statističke analize korišćeni su za upoređenje kvaliteta prevlake na dva uzorka dobijena od različitih proizvođača.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metalurgija
T1  - Image analysis of protective layer of zinc on steel obtained using the hot process
T1  - Analiza slike za karakterisanje zaštitnog sloja cinka na čeliku dobijenog toplim cinkovanjem
EP  - 68
IS  - 1
SP  - 63
VL  - 9
UR  - https://hdl.handle.net/21.15107/rcub_technorep_550
ER  - 

@article{
author = "Jančić, Radmila and Trifunović, Dejan and Kotanjac, Željko and Mitraković, Dragan",
year = "2003",
abstract = "The procedure for measuring the thickness of anticorrosion protective layer of zinc on steel is given. The metallographic images are used for this measurement. Results are statistically handled and results are used to determine the uniformity of the thickness of the layer. The procedure was used to determine the quality of protective layers obtained form specimens produced by two different producers., Dat je prikaz postupka merenja debljine zaštitnog sloja cinka na čeliku korišćenjem programa za analizu slike. Na metalografskim snimcima preseka zaštitnog sloja cinka na čeliku merene su debljine zaštitnog sloja i potom su podaci statistički obrađeni. Rezultati statističke analize korišćeni su za upoređenje kvaliteta prevlake na dva uzorka dobijena od različitih proizvođača.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metalurgija",
title = "Image analysis of protective layer of zinc on steel obtained using the hot process, Analiza slike za karakterisanje zaštitnog sloja cinka na čeliku dobijenog toplim cinkovanjem",
pages = "68-63",
number = "1",
volume = "9",
url = "https://hdl.handle.net/21.15107/rcub_technorep_550"
}

Jančić, R., Trifunović, D., Kotanjac, Ž.,& Mitraković, D.. (2003). Image analysis of protective layer of zinc on steel obtained using the hot process. in Metalurgija
Savez inženjera metalurgije Srbije, Beograd., 9(1), 63-68.
https://hdl.handle.net/21.15107/rcub_technorep_550

Jančić R, Trifunović D, Kotanjac Ž, Mitraković D. Image analysis of protective layer of zinc on steel obtained using the hot process. in Metalurgija. 2003;9(1):63-68.
https://hdl.handle.net/21.15107/rcub_technorep_550 .

Jančić, Radmila, Trifunović, Dejan, Kotanjac, Željko, Mitraković, Dragan, "Image analysis of protective layer of zinc on steel obtained using the hot process" in Metalurgija, 9, no. 1 (2003):63-68,
https://hdl.handle.net/21.15107/rcub_technorep_550 .