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.
Ključne reči:
chromium chemical corrosion / electrochemical dissolution / activation energy / hemijska korozija hroma / elektrohemijsko rastvaranje / prividna energija aktivacije
Izvor:
Mining and Metallurgy Engineering Bor, 2015, 2, 149-160
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
UR - Conv_549
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",
url = "Conv_549"
}
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
Conv_549
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
Conv_549 .
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 .,
Conv_549 .
