TY  - CONF
AU  - Pavlović, Ljubica  J.
AU  - Pavlović, Miroslav
AU  - Pavlović, Miomir
AU  - Tomić, Milorad
AU  - Lačnjevac, Uroš
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6673
AB  - Fizičke i hemijske karakteristike metala određuju njegovo elektrohemijsko ponašanje. Gvožđe, prema elektrohemijskoj klasifikaciji metala, spada u grupu prelaznih metala. Ono pripada grupi "inertnih metala", sa malom gustinom struje izmene j0, i visokom elektrohemijskom prenapetošću taloženja, η i njegovo taloženje je praćeno izdvajanjem vodonika. Elektrohemijskim taloženjem metala nastaju različiti nepravilni morofološki oblici taloga, kao što su: dendriti, igle, sunđeri, vlaknaste strukture, strukture pčelinjeg saća itd. Ovakve morfološke forme su ili korisne ili neželjene. U ovom radu su ispitivane polarizacione karakteristike elektrohemijskog procesa taloženja praha gvožđa, iz sulfatnih i hloridnih elektrolita, kao i njihova morfologija. Analiza morfologije i karakterizacija dobijenih prahova, vršena je pomoću SEM i EDS. Utvrđeno je da morfologija čestica zavisi od vrste anjona prisutnih u elektrolitu, ali ne i od primenjene gustine struje u ispitivanom opsegu. Čestice istaložene iz sulfatnih elektrolita, su pretežno dendritične sa karfiolastim, kristaličnim završecima i da poseduju kupaste šupljine. Kod Fe prahova istaloženih iz hloridnih elektrolita, uočeni su aglomerati, a takođe su prisutne šupljine zbog intenzivnog izdvajanja vodonika.
AB  - Various irregular morphological forms of metal deposits, such as dendrite, needle, spongy, fibrous, honeycomb-like structure, etc., can be formed by electrodeposition processes. These forms may be either useful or undesirable. According to electrochemical classification of metals, the transition metals such as Fe, belong to the "inert metal", with small exchange current density j0 and high overpotential of electrodeposition η. In this work the polarization characteristics of electrodeposition processes of Fe powders from sulfate and chloride electrolytes and their morphology were investigated. The morphology and characterization of the electrodeposited powders were investigated by SEM and EDS analysis. The morphology of obtained powders depends on the anion presence in the electrolyte, but not on the current density in investigated range. Characteristic feature of dendritic powder with cauliflower endings obtained from sulfate electrolyte is the presence cone-like type of cavities and crystallite morphology of the powders surface. Fe powders electrodeposited from chloride electrolyte appear in form of agglomerates.
PB  - Beograd, Srbija : Savez inženjera Srbije za zaštitu materijala (SITZAMS)
C3  - Book of abstracts -  XII YuCorr International Conference, Cooperation of Researches of Different Branches in the Fields of Corrosion, Materials Protection and Environmental Protection, May 18-21, Tara, Serbia
T1  - Uticaj vrste elektrolita i gustine struje na morfologiju Fe praha
T1  - The influence of electrolyte types and current density on the morphology of Fe powder
UR  - https://hdl.handle.net/21.15107/rcub_cer_6673
ER  - 

@conference{
author = "Pavlović, Ljubica  J. and Pavlović, Miroslav and Pavlović, Miomir and Tomić, Milorad and Lačnjevac, Uroš",
year = "2010",
abstract = "Fizičke i hemijske karakteristike metala određuju njegovo elektrohemijsko ponašanje. Gvožđe, prema elektrohemijskoj klasifikaciji metala, spada u grupu prelaznih metala. Ono pripada grupi "inertnih metala", sa malom gustinom struje izmene j0, i visokom elektrohemijskom prenapetošću taloženja, η i njegovo taloženje je praćeno izdvajanjem vodonika. Elektrohemijskim taloženjem metala nastaju različiti nepravilni morofološki oblici taloga, kao što su: dendriti, igle, sunđeri, vlaknaste strukture, strukture pčelinjeg saća itd. Ovakve morfološke forme su ili korisne ili neželjene. U ovom radu su ispitivane polarizacione karakteristike elektrohemijskog procesa taloženja praha gvožđa, iz sulfatnih i hloridnih elektrolita, kao i njihova morfologija. Analiza morfologije i karakterizacija dobijenih prahova, vršena je pomoću SEM i EDS. Utvrđeno je da morfologija čestica zavisi od vrste anjona prisutnih u elektrolitu, ali ne i od primenjene gustine struje u ispitivanom opsegu. Čestice istaložene iz sulfatnih elektrolita, su pretežno dendritične sa karfiolastim, kristaličnim završecima i da poseduju kupaste šupljine. Kod Fe prahova istaloženih iz hloridnih elektrolita, uočeni su aglomerati, a takođe su prisutne šupljine zbog intenzivnog izdvajanja vodonika., Various irregular morphological forms of metal deposits, such as dendrite, needle, spongy, fibrous, honeycomb-like structure, etc., can be formed by electrodeposition processes. These forms may be either useful or undesirable. According to electrochemical classification of metals, the transition metals such as Fe, belong to the "inert metal", with small exchange current density j0 and high overpotential of electrodeposition η. In this work the polarization characteristics of electrodeposition processes of Fe powders from sulfate and chloride electrolytes and their morphology were investigated. The morphology and characterization of the electrodeposited powders were investigated by SEM and EDS analysis. The morphology of obtained powders depends on the anion presence in the electrolyte, but not on the current density in investigated range. Characteristic feature of dendritic powder with cauliflower endings obtained from sulfate electrolyte is the presence cone-like type of cavities and crystallite morphology of the powders surface. Fe powders electrodeposited from chloride electrolyte appear in form of agglomerates.",
publisher = "Beograd, Srbija : Savez inženjera Srbije za zaštitu materijala (SITZAMS)",
journal = "Book of abstracts -  XII YuCorr International Conference, Cooperation of Researches of Different Branches in the Fields of Corrosion, Materials Protection and Environmental Protection, May 18-21, Tara, Serbia",
title = "Uticaj vrste elektrolita i gustine struje na morfologiju Fe praha, The influence of electrolyte types and current density on the morphology of Fe powder",
url = "https://hdl.handle.net/21.15107/rcub_cer_6673"
}

Pavlović, Ljubica  J., Pavlović, M., Pavlović, M., Tomić, M.,& Lačnjevac, U.. (2010). Uticaj vrste elektrolita i gustine struje na morfologiju Fe praha. in Book of abstracts -  XII YuCorr International Conference, Cooperation of Researches of Different Branches in the Fields of Corrosion, Materials Protection and Environmental Protection, May 18-21, Tara, Serbia
Beograd, Srbija : Savez inženjera Srbije za zaštitu materijala (SITZAMS)..
https://hdl.handle.net/21.15107/rcub_cer_6673

Pavlović, Ljubica  J., Pavlović M, Pavlović M, Tomić M, Lačnjevac U. Uticaj vrste elektrolita i gustine struje na morfologiju Fe praha. in Book of abstracts -  XII YuCorr International Conference, Cooperation of Researches of Different Branches in the Fields of Corrosion, Materials Protection and Environmental Protection, May 18-21, Tara, Serbia. 2010;.
https://hdl.handle.net/21.15107/rcub_cer_6673 .

Pavlović, Ljubica  J., Pavlović, Miroslav, Pavlović, Miomir, Tomić, Milorad, Lačnjevac, Uroš, "Uticaj vrste elektrolita i gustine struje na morfologiju Fe praha" in Book of abstracts -  XII YuCorr International Conference, Cooperation of Researches of Different Branches in the Fields of Corrosion, Materials Protection and Environmental Protection, May 18-21, Tara, Serbia (2010),
https://hdl.handle.net/21.15107/rcub_cer_6673 .

TY  - CONF
AU  - Pavlović, Miomir
AU  - Gligorić, Miladin
AU  - Pavlović, Ljubica  J.
AU  - Arsenović, Božidarka
AU  - Tomić, Milorad
AU  - Nikolić, Nebojša D.
AU  - Pavlović, Miroslav
PY  - 2008
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6715
AB  - The relationship between the light-reflecting property generally referred to as the brightness, and structure of electrodeposits has been the subject of many investigations. These studies have led to two theories. One theory states that electrodeposits are bright if their microstructure consist of crystallites smaller than the wavelength of visible light, i.e., smaller than 0.4 micrometers. At the same time, for the surface to be bright, a roughness of less than 0.15 micrometers and 0.025 micrometers is required. The second theory states that the more oriented the grain structure, the brighter the deposit, the bnghtnes being dependent on the degree to which the morphological components of the surface of electrodeposits are in plane. On the other hand, it has been found that a major fraction of mirror-bright (Ni) metal electrodeposits exhibit no preferred orientation. Hence, both theories do not hold. The conditions which must be fulfilled in order for the metal surfaces to exhibit mirror brightness have not been classified and systematized yet. Progress in the investigation of the structure of bright metal surfaces has accelerated recently, thank to the development of the Scanning Tunnelling Microscopy (STM) and Atomic Force Microscopy (AFM) techniques. It has been shown by these techniques that the reason of the mirror brightness of electropolished copper surfaces might be that large parts of the surface consists of small, flat and mutually parallel metal crystals, which exhibit smootthness on the atomic level. For this reason, it was considered necesarry to examine whether this conclusion about the structural features of electropolished mirror bright metal surfaces is also valid and for bright metal coatings obtained by electrodeposition.
PB  - The Society of Chemists and Technologists of Macedonia
C3  - Proceedings - 20th Congress of Chemists and Technologists of Macedonia, September 17-20, Ohrid, Macedonia
T1  - Some questions about morphology and structure of electrodeposited metal coatings
SP  - ECH-17-C
UR  - https://hdl.handle.net/21.15107/rcub_cer_6715
ER  - 

@conference{
author = "Pavlović, Miomir and Gligorić, Miladin and Pavlović, Ljubica  J. and Arsenović, Božidarka and Tomić, Milorad and Nikolić, Nebojša D. and Pavlović, Miroslav",
year = "2008",
abstract = "The relationship between the light-reflecting property generally referred to as the brightness, and structure of electrodeposits has been the subject of many investigations. These studies have led to two theories. One theory states that electrodeposits are bright if their microstructure consist of crystallites smaller than the wavelength of visible light, i.e., smaller than 0.4 micrometers. At the same time, for the surface to be bright, a roughness of less than 0.15 micrometers and 0.025 micrometers is required. The second theory states that the more oriented the grain structure, the brighter the deposit, the bnghtnes being dependent on the degree to which the morphological components of the surface of electrodeposits are in plane. On the other hand, it has been found that a major fraction of mirror-bright (Ni) metal electrodeposits exhibit no preferred orientation. Hence, both theories do not hold. The conditions which must be fulfilled in order for the metal surfaces to exhibit mirror brightness have not been classified and systematized yet. Progress in the investigation of the structure of bright metal surfaces has accelerated recently, thank to the development of the Scanning Tunnelling Microscopy (STM) and Atomic Force Microscopy (AFM) techniques. It has been shown by these techniques that the reason of the mirror brightness of electropolished copper surfaces might be that large parts of the surface consists of small, flat and mutually parallel metal crystals, which exhibit smootthness on the atomic level. For this reason, it was considered necesarry to examine whether this conclusion about the structural features of electropolished mirror bright metal surfaces is also valid and for bright metal coatings obtained by electrodeposition.",
publisher = "The Society of Chemists and Technologists of Macedonia",
journal = "Proceedings - 20th Congress of Chemists and Technologists of Macedonia, September 17-20, Ohrid, Macedonia",
title = "Some questions about morphology and structure of electrodeposited metal coatings",
pages = "ECH-17-C",
url = "https://hdl.handle.net/21.15107/rcub_cer_6715"
}

Pavlović, M., Gligorić, M., Pavlović, Ljubica  J., Arsenović, B., Tomić, M., Nikolić, N. D.,& Pavlović, M.. (2008). Some questions about morphology and structure of electrodeposited metal coatings. in Proceedings - 20th Congress of Chemists and Technologists of Macedonia, September 17-20, Ohrid, Macedonia
The Society of Chemists and Technologists of Macedonia., ECH-17-C.
https://hdl.handle.net/21.15107/rcub_cer_6715

Pavlović M, Gligorić M, Pavlović, Ljubica  J., Arsenović B, Tomić M, Nikolić ND, Pavlović M. Some questions about morphology and structure of electrodeposited metal coatings. in Proceedings - 20th Congress of Chemists and Technologists of Macedonia, September 17-20, Ohrid, Macedonia. 2008;:ECH-17-C.
https://hdl.handle.net/21.15107/rcub_cer_6715 .

Pavlović, Miomir, Gligorić, Miladin, Pavlović, Ljubica  J., Arsenović, Božidarka, Tomić, Milorad, Nikolić, Nebojša D., Pavlović, Miroslav, "Some questions about morphology and structure of electrodeposited metal coatings" in Proceedings - 20th Congress of Chemists and Technologists of Macedonia, September 17-20, Ohrid, Macedonia (2008):ECH-17-C,
https://hdl.handle.net/21.15107/rcub_cer_6715 .

TY  - JOUR
AU  - Maksimović, Vesna M.
AU  - Pavlović, Miomir G.
AU  - Pavlović, Ljubica  J.
AU  - Tomić, Milorad V.
AU  - Jović, Vladimir D.
PY  - 2007
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4272
AB  - The effect of overpotential pulsing and periodic current reversal on the morphology of silver powders was investigated using a scanning electron microscope (SEM). It is shown that the profile of pulses or current reversal determines the micromorphology of the electrodeposited silver particles. Generally, three forms of silver were detected: (1) dendrites, (2) equiaxial crystals (independent and/or agglomerates) and (3) rods. The shape of particle seems to be the result of an interplay between the surface energy and growth kinetics.
PB  - Elsevier
T2  - Hydrometallurgy
T1  - Morphology and growth of electrodeposited silver powder particles
VL  - 86
IS  - 1-2
SP  - 22
EP  - 26
DO  - 10.1016/j.hydromet.2006.10.004
ER  - 

@article{
author = "Maksimović, Vesna M. and Pavlović, Miomir G. and Pavlović, Ljubica  J. and Tomić, Milorad V. and Jović, Vladimir D.",
year = "2007",
abstract = "The effect of overpotential pulsing and periodic current reversal on the morphology of silver powders was investigated using a scanning electron microscope (SEM). It is shown that the profile of pulses or current reversal determines the micromorphology of the electrodeposited silver particles. Generally, three forms of silver were detected: (1) dendrites, (2) equiaxial crystals (independent and/or agglomerates) and (3) rods. The shape of particle seems to be the result of an interplay between the surface energy and growth kinetics.",
publisher = "Elsevier",
journal = "Hydrometallurgy",
title = "Morphology and growth of electrodeposited silver powder particles",
volume = "86",
number = "1-2",
pages = "22-26",
doi = "10.1016/j.hydromet.2006.10.004"
}

Maksimović, V. M., Pavlović, M. G., Pavlović, Ljubica  J., Tomić, M. V.,& Jović, V. D.. (2007). Morphology and growth of electrodeposited silver powder particles. in Hydrometallurgy
Elsevier., 86(1-2), 22-26.
https://doi.org/10.1016/j.hydromet.2006.10.004

Maksimović VM, Pavlović MG, Pavlović, Ljubica  J., Tomić MV, Jović VD. Morphology and growth of electrodeposited silver powder particles. in Hydrometallurgy. 2007;86(1-2):22-26.
doi:10.1016/j.hydromet.2006.10.004 .

Maksimović, Vesna M., Pavlović, Miomir G., Pavlović, Ljubica  J., Tomić, Milorad V., Jović, Vladimir D., "Morphology and growth of electrodeposited silver powder particles" in Hydrometallurgy, 86, no. 1-2 (2007):22-26,
https://doi.org/10.1016/j.hydromet.2006.10.004 . .