In this work we studied the electrochemical behavior of chromium white cast irons in deaerated aqueous sulphuric acid solutions of the pH 1-3. The measurements of concentrations of dissolved iron and chromium in the solution, as well as the volume of hydrogen evolved were carried out. By comparing the results, it was found that besides the electrochemical corrosion, another, chemical, process occurs at the same time. This process takes place at the surface of the metal, in the contact with the water molecules or hydrogen ions, and produces hydrogen evolution. These results show, that the usual electrochemical determination of the metal corrosion rate must be very critically applied.
U ovom radu proučavano je elektrohemijsko ponašanje visokohromnog belog gvožđa u dearisanim rastvorima sumporne kiseline u oblasti pH 1-3. Provedena su merenja koncentracije rastvorenog gvožđa i hroma u rastvoru, kao i zapremine izdvojenog vodonika. Poređenjem rezultata konstatovano je da pored elektohemijske korozije jednovremeno teče i drugi hemijski proces koji se odigrava na površini metala u kontaktu sa molekulima vode ili vodoničnim jonima uz izdvajanje vodonika. Ovi rezultati ukazuju da se uobičajene metode elektrohemijskog određivanja brzine korozije metala moraju primenjivati vrlo kritički, uz prethodno dokazivanje da su ovakvi hemijski procesi u odnosu na elektohemijske na ispitivanom metalu relativno zanemarljivi.
Source:
Zaštita materijala, 2008, 49, 2, 15-23
Publisher:
Belgrade, Serbia : Engineering Society for Corrosion
TY - JOUR
AU - Popić, Jovan P.
AU - Jegdić, Bore
PY - 2008
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/427
AB - In this work we studied the electrochemical behavior of chromium white cast irons in deaerated aqueous sulphuric acid solutions of the pH 1-3. The measurements of concentrations of dissolved iron and chromium in the solution, as well as the volume of hydrogen evolved were carried out. By comparing the results, it was found that besides the electrochemical corrosion, another, chemical, process occurs at the same time. This process takes place at the surface of the metal, in the contact with the water molecules or hydrogen ions, and produces hydrogen evolution. These results show, that the usual electrochemical determination of the metal corrosion rate must be very critically applied.
AB - U ovom radu proučavano je elektrohemijsko ponašanje visokohromnog belog gvožđa u dearisanim rastvorima sumporne kiseline u oblasti pH 1-3. Provedena su merenja koncentracije rastvorenog gvožđa i hroma u rastvoru, kao i zapremine izdvojenog vodonika. Poređenjem rezultata konstatovano je da pored elektohemijske korozije jednovremeno teče i drugi hemijski proces koji se odigrava na površini metala u kontaktu sa molekulima vode ili vodoničnim jonima uz izdvajanje vodonika. Ovi rezultati ukazuju da se uobičajene metode elektrohemijskog određivanja brzine korozije metala moraju primenjivati vrlo kritički, uz prethodno dokazivanje da su ovakvi hemijski procesi u odnosu na elektohemijske na ispitivanom metalu relativno zanemarljivi.
PB - Belgrade, Serbia : Engineering Society for Corrosion
T2 - Zaštita materijala
T1 - Corrosion of chromium white cast iron in acidic medium
T1 - Korozija visokohromnog belog gvožđa u kiseloj sredini
VL - 49
IS - 2
SP - 15
EP - 23
UR - https://hdl.handle.net/21.15107/rcub_cer_427
ER -
@article{
author = "Popić, Jovan P. and Jegdić, Bore",
year = "2008",
abstract = "In this work we studied the electrochemical behavior of chromium white cast irons in deaerated aqueous sulphuric acid solutions of the pH 1-3. The measurements of concentrations of dissolved iron and chromium in the solution, as well as the volume of hydrogen evolved were carried out. By comparing the results, it was found that besides the electrochemical corrosion, another, chemical, process occurs at the same time. This process takes place at the surface of the metal, in the contact with the water molecules or hydrogen ions, and produces hydrogen evolution. These results show, that the usual electrochemical determination of the metal corrosion rate must be very critically applied., U ovom radu proučavano je elektrohemijsko ponašanje visokohromnog belog gvožđa u dearisanim rastvorima sumporne kiseline u oblasti pH 1-3. Provedena su merenja koncentracije rastvorenog gvožđa i hroma u rastvoru, kao i zapremine izdvojenog vodonika. Poređenjem rezultata konstatovano je da pored elektohemijske korozije jednovremeno teče i drugi hemijski proces koji se odigrava na površini metala u kontaktu sa molekulima vode ili vodoničnim jonima uz izdvajanje vodonika. Ovi rezultati ukazuju da se uobičajene metode elektrohemijskog određivanja brzine korozije metala moraju primenjivati vrlo kritički, uz prethodno dokazivanje da su ovakvi hemijski procesi u odnosu na elektohemijske na ispitivanom metalu relativno zanemarljivi.",
publisher = "Belgrade, Serbia : Engineering Society for Corrosion",
journal = "Zaštita materijala",
title = "Corrosion of chromium white cast iron in acidic medium, Korozija visokohromnog belog gvožđa u kiseloj sredini",
volume = "49",
number = "2",
pages = "15-23",
url = "https://hdl.handle.net/21.15107/rcub_cer_427"
}
Popić, J. P.,& Jegdić, B.. (2008). Corrosion of chromium white cast iron in acidic medium. in Zaštita materijala
Belgrade, Serbia : Engineering Society for Corrosion., 49(2), 15-23.
https://hdl.handle.net/21.15107/rcub_cer_427
Popić JP, Jegdić B. Corrosion of chromium white cast iron in acidic medium. in Zaštita materijala. 2008;49(2):15-23.
https://hdl.handle.net/21.15107/rcub_cer_427 .
Popić, Jovan P., Jegdić, Bore, "Corrosion of chromium white cast iron in acidic medium" in Zaštita materijala, 49, no. 2 (2008):15-23,
https://hdl.handle.net/21.15107/rcub_cer_427 .
