Epoxy coatings electrodeposited on steel electrochemically modified by Zn-Co alloys
Epoksidne kataforetske prevlake na čeliku modifikovanom Zn-Co legurama
Апстракт
The corrosion behavior of epoxy coatings electrodeposited on steel and steel modified by Zn-Co alloys deposited from chloride and sulphate baths were investigated during exposure to 3 % NaCl. The electrochemical impedance spectroscopy, gravimetric liquid sorption experiments and thermogravimetric analysis were used. It was shown that the almost unchanged values of pore resistance for epoxy coating on Zn-Co alloy deposited from chloride bath were obtained over the entire investigated time, indicating the great stability of this protective system, due to the existence of a pseudo-passive layer of ZnCl2-4Zn(OH)2. Smaller values of diffusion coefficient of water through epoxy coating and smaller amount of absorbed water inside epoxy coating on steel electrochemically modified by this Zn-Co alloy also prove better protective properties in respect to epoxy coating on other investigated substrates.
Ispitivani su koroziono ponašanje i transportne osobine epoksidnih kataforetskih prevlaka na čeliku i čeliku modifikovanom Zn-Co legurama tokom delovanja 3% rastvora NaCl. Iz rezultata dobijenih metodom spektroskopije elektrohemijske impedancije (otpornosti elektrolita u porama kapacitivnost prevlake), gravimetrijske metode određivanja sorpcionih karakteristika (koeficijenta difuzije vode) i termogravimetrijske analize (sadržaj vode u prevlaci) pokazano je da modifikacija površine osnovnog supstrata značajno utiče na elektrohetnijske osobine i korozionu stabilnost epoksidnih prevlaka.
Кључне речи:
epoxy coatings / Zn-Co alloy / electrodeposition / corrosion stability / epoksidna prevlaka / Zn-Co legura / elektroforetsko taloženje / koroziona stabilnostИзвор:
Zaštita materijala, 2003, 44, 1, 3-9Издавач:
- Engineering Society for Corrosion, Belgrade, Serbia
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Novaković, Ivana D. AU - Bajat, Jelena AU - Mišković-Stanković, Vesna PY - 2003 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/535 AB - The corrosion behavior of epoxy coatings electrodeposited on steel and steel modified by Zn-Co alloys deposited from chloride and sulphate baths were investigated during exposure to 3 % NaCl. The electrochemical impedance spectroscopy, gravimetric liquid sorption experiments and thermogravimetric analysis were used. It was shown that the almost unchanged values of pore resistance for epoxy coating on Zn-Co alloy deposited from chloride bath were obtained over the entire investigated time, indicating the great stability of this protective system, due to the existence of a pseudo-passive layer of ZnCl2-4Zn(OH)2. Smaller values of diffusion coefficient of water through epoxy coating and smaller amount of absorbed water inside epoxy coating on steel electrochemically modified by this Zn-Co alloy also prove better protective properties in respect to epoxy coating on other investigated substrates. AB - Ispitivani su koroziono ponašanje i transportne osobine epoksidnih kataforetskih prevlaka na čeliku i čeliku modifikovanom Zn-Co legurama tokom delovanja 3% rastvora NaCl. Iz rezultata dobijenih metodom spektroskopije elektrohemijske impedancije (otpornosti elektrolita u porama kapacitivnost prevlake), gravimetrijske metode određivanja sorpcionih karakteristika (koeficijenta difuzije vode) i termogravimetrijske analize (sadržaj vode u prevlaci) pokazano je da modifikacija površine osnovnog supstrata značajno utiče na elektrohetnijske osobine i korozionu stabilnost epoksidnih prevlaka. PB - Engineering Society for Corrosion, Belgrade, Serbia T2 - Zaštita materijala T1 - Epoxy coatings electrodeposited on steel electrochemically modified by Zn-Co alloys T1 - Epoksidne kataforetske prevlake na čeliku modifikovanom Zn-Co legurama EP - 9 IS - 1 SP - 3 VL - 44 UR - https://hdl.handle.net/21.15107/rcub_technorep_535 ER -
@article{ author = "Novaković, Ivana D. and Bajat, Jelena and Mišković-Stanković, Vesna", year = "2003", abstract = "The corrosion behavior of epoxy coatings electrodeposited on steel and steel modified by Zn-Co alloys deposited from chloride and sulphate baths were investigated during exposure to 3 % NaCl. The electrochemical impedance spectroscopy, gravimetric liquid sorption experiments and thermogravimetric analysis were used. It was shown that the almost unchanged values of pore resistance for epoxy coating on Zn-Co alloy deposited from chloride bath were obtained over the entire investigated time, indicating the great stability of this protective system, due to the existence of a pseudo-passive layer of ZnCl2-4Zn(OH)2. Smaller values of diffusion coefficient of water through epoxy coating and smaller amount of absorbed water inside epoxy coating on steel electrochemically modified by this Zn-Co alloy also prove better protective properties in respect to epoxy coating on other investigated substrates., Ispitivani su koroziono ponašanje i transportne osobine epoksidnih kataforetskih prevlaka na čeliku i čeliku modifikovanom Zn-Co legurama tokom delovanja 3% rastvora NaCl. Iz rezultata dobijenih metodom spektroskopije elektrohemijske impedancije (otpornosti elektrolita u porama kapacitivnost prevlake), gravimetrijske metode određivanja sorpcionih karakteristika (koeficijenta difuzije vode) i termogravimetrijske analize (sadržaj vode u prevlaci) pokazano je da modifikacija površine osnovnog supstrata značajno utiče na elektrohetnijske osobine i korozionu stabilnost epoksidnih prevlaka.", publisher = "Engineering Society for Corrosion, Belgrade, Serbia", journal = "Zaštita materijala", title = "Epoxy coatings electrodeposited on steel electrochemically modified by Zn-Co alloys, Epoksidne kataforetske prevlake na čeliku modifikovanom Zn-Co legurama", pages = "9-3", number = "1", volume = "44", url = "https://hdl.handle.net/21.15107/rcub_technorep_535" }
Novaković, I. D., Bajat, J.,& Mišković-Stanković, V.. (2003). Epoxy coatings electrodeposited on steel electrochemically modified by Zn-Co alloys. in Zaštita materijala Engineering Society for Corrosion, Belgrade, Serbia., 44(1), 3-9. https://hdl.handle.net/21.15107/rcub_technorep_535
Novaković ID, Bajat J, Mišković-Stanković V. Epoxy coatings electrodeposited on steel electrochemically modified by Zn-Co alloys. in Zaštita materijala. 2003;44(1):3-9. https://hdl.handle.net/21.15107/rcub_technorep_535 .
Novaković, Ivana D., Bajat, Jelena, Mišković-Stanković, Vesna, "Epoxy coatings electrodeposited on steel electrochemically modified by Zn-Co alloys" in Zaštita materijala, 44, no. 1 (2003):3-9, https://hdl.handle.net/21.15107/rcub_technorep_535 .