TY  - JOUR
AU  - Bobić, Biljana
AU  - Bajić, Nikola
AU  - Jegdić, Aleksandar
AU  - Stevanović, Maja
AU  - Jegdić, Bore
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1688
AB  - To determine corrosion rate of the base metal and weld metal were applied electrochemical techniques: linear polarization resistance, linear sweep voltammetry and electrochemical impedance spectroscopy. The samples were obtained by arc welding steel boiler plate using coated basic electrode. Factory electrode and electrodes, which are produced in the laboratory thinly and thick coated basic electrodes, were used for welding. It was found that the corrosion rate of the weld metal was greater than the corrosion rate of the base metal. The corrosion rate of weld metal obtained by thinly coated electrodes is less than the corrosion rate of weld metal obtained by thick coated basic and factory-coated electrodes. The corrosion rates, determined by different electrochemical techniques are in agreement.
AB  - Za određivanje brzine korozije osnovnog metala i metala šava u zavarenom spoju primenjene su elektrohemijske tehnike: linearna polarizaciona otpornost, voltametrija sa linearnom promenom potencijala i elektrohemijska impedansna spektroskopija. Uzorci za ispitivanje dobijeni su elektrolučnim zavarivanjem čeličnog kotlovskog lima, uz upotrebu obloženih bazičnih elektroda. Pri zavarivanju je korišćena fabrička elektroda i elektrode koje su proizvedene u laboratorijskim uslovima (tanko obložena i debelo obložena bazična elektroda). Utvrđeno je da je brzina korozije metala šava veća od brzine korozije osnovnog metala. Brzina korozije metala šava dobijenog pomoću tanko obložene elektrode je manja od brzine korozje metala šava dobijenog pomoću debelo obložene i fabričke elektrode. Vrednosti za brzinu korozije, određene različitim elektrohemijskim tehnikama, su u saglasnosti.
PB  - Belgrade, Serbia : Engineering Society for Corrosion
T2  - Zaštita materijala
T1  - Determination of the weld metal corrosion rate using electrochemical techniques
T1  - Određivanje brzine korozije metala šava u zavarenom spoju pomoću elektrohemijskih tehnika
VL  - 56
IS  - 3
SP  - 315
EP  - 319
DO  - 10.5937/ZasMat1503315B
ER  - 

@article{
author = "Bobić, Biljana and Bajić, Nikola and Jegdić, Aleksandar and Stevanović, Maja and Jegdić, Bore",
year = "2015",
abstract = "To determine corrosion rate of the base metal and weld metal were applied electrochemical techniques: linear polarization resistance, linear sweep voltammetry and electrochemical impedance spectroscopy. The samples were obtained by arc welding steel boiler plate using coated basic electrode. Factory electrode and electrodes, which are produced in the laboratory thinly and thick coated basic electrodes, were used for welding. It was found that the corrosion rate of the weld metal was greater than the corrosion rate of the base metal. The corrosion rate of weld metal obtained by thinly coated electrodes is less than the corrosion rate of weld metal obtained by thick coated basic and factory-coated electrodes. The corrosion rates, determined by different electrochemical techniques are in agreement., Za određivanje brzine korozije osnovnog metala i metala šava u zavarenom spoju primenjene su elektrohemijske tehnike: linearna polarizaciona otpornost, voltametrija sa linearnom promenom potencijala i elektrohemijska impedansna spektroskopija. Uzorci za ispitivanje dobijeni su elektrolučnim zavarivanjem čeličnog kotlovskog lima, uz upotrebu obloženih bazičnih elektroda. Pri zavarivanju je korišćena fabrička elektroda i elektrode koje su proizvedene u laboratorijskim uslovima (tanko obložena i debelo obložena bazična elektroda). Utvrđeno je da je brzina korozije metala šava veća od brzine korozije osnovnog metala. Brzina korozije metala šava dobijenog pomoću tanko obložene elektrode je manja od brzine korozje metala šava dobijenog pomoću debelo obložene i fabričke elektrode. Vrednosti za brzinu korozije, određene različitim elektrohemijskim tehnikama, su u saglasnosti.",
publisher = "Belgrade, Serbia : Engineering Society for Corrosion",
journal = "Zaštita materijala",
title = "Determination of the weld metal corrosion rate using electrochemical techniques, Određivanje brzine korozije metala šava u zavarenom spoju pomoću elektrohemijskih tehnika",
volume = "56",
number = "3",
pages = "315-319",
doi = "10.5937/ZasMat1503315B"
}

Bobić, B., Bajić, N., Jegdić, A., Stevanović, M.,& Jegdić, B.. (2015). Determination of the weld metal corrosion rate using electrochemical techniques. in Zaštita materijala
Belgrade, Serbia : Engineering Society for Corrosion., 56(3), 315-319.
https://doi.org/10.5937/ZasMat1503315B

Bobić B, Bajić N, Jegdić A, Stevanović M, Jegdić B. Determination of the weld metal corrosion rate using electrochemical techniques. in Zaštita materijala. 2015;56(3):315-319.
doi:10.5937/ZasMat1503315B .

Bobić, Biljana, Bajić, Nikola, Jegdić, Aleksandar, Stevanović, Maja, Jegdić, Bore, "Determination of the weld metal corrosion rate using electrochemical techniques" in Zaštita materijala, 56, no. 3 (2015):315-319,
https://doi.org/10.5937/ZasMat1503315B . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Jegdić, Aleksandar
AU  - Stevanović, Maja
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1770
AB  - In this work, the mechanisms of hydrogen evolution on the metal chromium in a solution of 0.1 M Na2SO4 + H2SO4, pH 1 to pH 7 were analysed. In the pH  LT  3 range, hydrogen is evolved according to three different mechanisms, depending on the experimental conditions: electrochemical evolution of H2 by reaction of H+ ions according to the Volmer-Heyrovsky mechanism, on the bare chromium surface, during chemical dissolution of chromium by the Kolotyrkin mechanism, which does not depend on the electrode potential, and electrochemical hydrogen evolution by the Volmer-Heyrovsky mechanism, but on the passive chromium. At pH values greater than 3, the fourth mechanism of hydrogen evolution is observed, that is electrochemical reaction of water molecules on the surface of oxide covered chromium surface.
AB  - U ovom radu analizirani su mehanizmi izdvajanja vodonika na metalnom hromu u rastvoru 0,1 M Na2SO4 + H2SO4, pH 1 do pH 7. U oblasti pH  LT  3 vodonik se izdvaja u zavisnosti od eksperimentalnih uslova po tri različita mehanizma: elektrohemijskim izdvajanjem H2 reagovanjem H+ jona po mehanizmu Folmer-Hejrovski na čistoj površini hroma, pri hemijskom rastvaranju hroma po mehanizmu Kolotirkina, a koje ne zavisi od elektrodnog potencijala i elektrohemijskim izdvajanjem vodonika po mehanizmu Folmer-Hejrovski, ali na pasivnom hromu. Pri pH vrednostima većim od 3 uočava se i četvrti mehanizam izdvajanja vodonika elektrohemijskim reagovanjem molekula vode na oksidom presvučenoj površini hroma.
PB  - Institut za rudarstvo i metalurgiju Bor
T2  - Mining and Metallurgy Engineering Bor
T1  - Mechanisms of hydrogen evolution on chromium
T1  - Mehanizmi izdvajanja vodonika na hromu
IS  - 3
SP  - 145
EP  - 156
DO  - 10.5937/mmeb1503145j
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Jegdić, Aleksandar and Stevanović, Maja",
year = "2015",
abstract = "In this work, the mechanisms of hydrogen evolution on the metal chromium in a solution of 0.1 M Na2SO4 + H2SO4, pH 1 to pH 7 were analysed. In the pH  LT  3 range, hydrogen is evolved according to three different mechanisms, depending on the experimental conditions: electrochemical evolution of H2 by reaction of H+ ions according to the Volmer-Heyrovsky mechanism, on the bare chromium surface, during chemical dissolution of chromium by the Kolotyrkin mechanism, which does not depend on the electrode potential, and electrochemical hydrogen evolution by the Volmer-Heyrovsky mechanism, but on the passive chromium. At pH values greater than 3, the fourth mechanism of hydrogen evolution is observed, that is electrochemical reaction of water molecules on the surface of oxide covered chromium surface., U ovom radu analizirani su mehanizmi izdvajanja vodonika na metalnom hromu u rastvoru 0,1 M Na2SO4 + H2SO4, pH 1 do pH 7. U oblasti pH  LT  3 vodonik se izdvaja u zavisnosti od eksperimentalnih uslova po tri različita mehanizma: elektrohemijskim izdvajanjem H2 reagovanjem H+ jona po mehanizmu Folmer-Hejrovski na čistoj površini hroma, pri hemijskom rastvaranju hroma po mehanizmu Kolotirkina, a koje ne zavisi od elektrodnog potencijala i elektrohemijskim izdvajanjem vodonika po mehanizmu Folmer-Hejrovski, ali na pasivnom hromu. Pri pH vrednostima većim od 3 uočava se i četvrti mehanizam izdvajanja vodonika elektrohemijskim reagovanjem molekula vode na oksidom presvučenoj površini hroma.",
publisher = "Institut za rudarstvo i metalurgiju Bor",
journal = "Mining and Metallurgy Engineering Bor",
title = "Mechanisms of hydrogen evolution on chromium, Mehanizmi izdvajanja vodonika na hromu",
number = "3",
pages = "145-156",
doi = "10.5937/mmeb1503145j"
}

Jegdić, B., Bobić, B., Jegdić, A.,& Stevanović, M.. (2015). Mechanisms of hydrogen evolution on chromium. in Mining and Metallurgy Engineering Bor
Institut za rudarstvo i metalurgiju Bor.(3), 145-156.
https://doi.org/10.5937/mmeb1503145j

Jegdić B, Bobić B, Jegdić A, Stevanović M. Mechanisms of hydrogen evolution on chromium. in Mining and Metallurgy Engineering Bor. 2015;(3):145-156.
doi:10.5937/mmeb1503145j .

Jegdić, Bore, Bobić, Biljana, Jegdić, Aleksandar, Stevanović, Maja, "Mechanisms of hydrogen evolution on chromium" in Mining and Metallurgy Engineering Bor, no. 3 (2015):145-156,
https://doi.org/10.5937/mmeb1503145j . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Stevanović, Maja
AU  - Jegdić, Aleksandar
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1771
AB  - The influence of temperature on electrochemical and chemical dissolution of chromium was studied in the acidic sulphuric solutions. The hydrogen evolution reaction, as well as the anodic dissolution and chemical dissolution of chromium from activated surfaces in sulphuric acid solutions pH 1 follow the Arrhenius law, with the apparent activation energies of 35 kJ mol-1, 58 kJ mol-1 and 62 kJ mol-1, respectively. The higher activation energy of the chemical dissolution of chromium leads to the signifycantly noticeable chemical corrosion on elevated temperatures in comparison with the electrochemical corrosion.
AB  - Ispitivan je uticaj temperature na elektrohemijsko i hemijsko rastvaranje hroma u kiselim rastvorima sulfata. Reakcije izdvajanja vodonika, anodnog rastvaranja i hemijskog rastvaranja hroma sa aktivirane površine hroma u rastvoru sumporne kiseline pH 1 slede Arenijusovu zavisnost sa prividnom energijom aktivacije 35 kJ mol-1, 58 kJ mol-1 i 62 kJ mol-1, respektivno. Velika energija aktivacije hemijskog rastvaranja hroma dovodi na povišenim temperaturama do znatno izraženije hemijske korozije u odnosu na elektrohemijsku koroziju.
PB  - Institut za rudarstvo i metalurgiju Bor
T2  - Mining and Metallurgy Engineering Bor
T1  - Chemical and electrochemical dissolution of chromium at room and elevated temperatures
T1  - Hemijsko i elektrohemijsko rastvaranje hroma na sobnoj i na povišenim temperaturama
IS  - 2
SP  - 149
EP  - 160
DO  - 10.5937/MMEB1502149J
ER  - 

@article{
author = "Jegdić, Bore and Stevanović, Maja and Jegdić, Aleksandar",
year = "2015",
abstract = "The influence of temperature on electrochemical and chemical dissolution of chromium was studied in the acidic sulphuric solutions. The hydrogen evolution reaction, as well as the anodic dissolution and chemical dissolution of chromium from activated surfaces in sulphuric acid solutions pH 1 follow the Arrhenius law, with the apparent activation energies of 35 kJ mol-1, 58 kJ mol-1 and 62 kJ mol-1, respectively. The higher activation energy of the chemical dissolution of chromium leads to the signifycantly noticeable chemical corrosion on elevated temperatures in comparison with the electrochemical corrosion., Ispitivan je uticaj temperature na elektrohemijsko i hemijsko rastvaranje hroma u kiselim rastvorima sulfata. Reakcije izdvajanja vodonika, anodnog rastvaranja i hemijskog rastvaranja hroma sa aktivirane površine hroma u rastvoru sumporne kiseline pH 1 slede Arenijusovu zavisnost sa prividnom energijom aktivacije 35 kJ mol-1, 58 kJ mol-1 i 62 kJ mol-1, respektivno. Velika energija aktivacije hemijskog rastvaranja hroma dovodi na povišenim temperaturama do znatno izraženije hemijske korozije u odnosu na elektrohemijsku koroziju.",
publisher = "Institut za rudarstvo i metalurgiju Bor",
journal = "Mining and Metallurgy Engineering Bor",
title = "Chemical and electrochemical dissolution of chromium at room and elevated temperatures, Hemijsko i elektrohemijsko rastvaranje hroma na sobnoj i na povišenim temperaturama",
number = "2",
pages = "149-160",
doi = "10.5937/MMEB1502149J"
}

Jegdić, B., Stevanović, M.,& Jegdić, A.. (2015). Chemical and electrochemical dissolution of chromium at room and elevated temperatures. in Mining and Metallurgy Engineering Bor
Institut za rudarstvo i metalurgiju Bor.(2), 149-160.
https://doi.org/10.5937/MMEB1502149J

Jegdić B, Stevanović M, Jegdić A. Chemical and electrochemical dissolution of chromium at room and elevated temperatures. in Mining and Metallurgy Engineering Bor. 2015;(2):149-160.
doi:10.5937/MMEB1502149J .

Jegdić, Bore, Stevanović, Maja, Jegdić, Aleksandar, "Chemical and electrochemical dissolution of chromium at room and elevated temperatures" in Mining and Metallurgy Engineering Bor, no. 2 (2015):149-160,
https://doi.org/10.5937/MMEB1502149J . .