Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening
Otpornost prema koroziji aluminijumske legure serije 7000 posle novog dvostepenog termičkog taloženja
Апстракт
Corrosion properties of an aluminium alloy 7000 series were investigated by different electrochemical methods. The alloy was subjected to the one-step and to a new two-step precipitation hardening. Polarization measurements in the 3.5 wt. % NaCl solution have shown a more positive value of the pitting potential (Epit) and a higher corrosion resistance for the two-step aged alloy. The electrochemical impedance spectroscopy (EIS) has also shown that the two-step aged alloy has better corrosion properties (higher value of polarization resistance, Rp, and lower value of double-layer capacitance, Cdl) comparing to the one-step aged alloy.
Otpornost prema koroziji aluminijumske legure serije 7000 ispitivana je primenom različitih elektrohemijskih metoda. Legura je bila podvrgnuta jednostepenom i novom dvostepenom termičkom taloženju. Polarizaciona merenja u 3,5 mas.% NaCl su pokazala da legura posle dvostepenog termičkog taloženja ima pozitivniju vrednost potencijala pitinga (Epit) i veću otpornost prema koroziji. Spektroskopija elektrohemijske impedancije (SEI) je takođe pokazala da legura posle dvostepenog termičkog taloženja ima bolju otpornost prema koroziji (veću vrednost polarizacione otpornosti, Rp i manju vrednost kapacitivnosti dvojnog sloja, Cdl) u poređenju sa legurom posle jednostepenog termičkog taloženja.
Кључне речи:
aluminium alloys / precipitation hardening / corrosion / electrochemical methods / aluminijumske legure / termičko taloženje / korozija / elektrohemijske metodeИзвор:
Zaštita materijala, 2014, 55, 4, 387-394Издавач:
- Belgrade, Serbia : Engineering Society for Corrosion
Финансирање / пројекти:
- Синтеза, развој технологија добијања и примена наноструктурних мултифункционалних материјала дефинисаних својстава (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45019)
Институција/група
IHTMTY - JOUR AU - Jegdić, Bore AU - Bobić, Biljana AU - Gligorijević, Bojan AU - Mišković-Stanković, Vesna PY - 2014 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1483 AB - Corrosion properties of an aluminium alloy 7000 series were investigated by different electrochemical methods. The alloy was subjected to the one-step and to a new two-step precipitation hardening. Polarization measurements in the 3.5 wt. % NaCl solution have shown a more positive value of the pitting potential (Epit) and a higher corrosion resistance for the two-step aged alloy. The electrochemical impedance spectroscopy (EIS) has also shown that the two-step aged alloy has better corrosion properties (higher value of polarization resistance, Rp, and lower value of double-layer capacitance, Cdl) comparing to the one-step aged alloy. AB - Otpornost prema koroziji aluminijumske legure serije 7000 ispitivana je primenom različitih elektrohemijskih metoda. Legura je bila podvrgnuta jednostepenom i novom dvostepenom termičkom taloženju. Polarizaciona merenja u 3,5 mas.% NaCl su pokazala da legura posle dvostepenog termičkog taloženja ima pozitivniju vrednost potencijala pitinga (Epit) i veću otpornost prema koroziji. Spektroskopija elektrohemijske impedancije (SEI) je takođe pokazala da legura posle dvostepenog termičkog taloženja ima bolju otpornost prema koroziji (veću vrednost polarizacione otpornosti, Rp i manju vrednost kapacitivnosti dvojnog sloja, Cdl) u poređenju sa legurom posle jednostepenog termičkog taloženja. PB - Belgrade, Serbia : Engineering Society for Corrosion T2 - Zaštita materijala T1 - Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening T1 - Otpornost prema koroziji aluminijumske legure serije 7000 posle novog dvostepenog termičkog taloženja VL - 55 IS - 4 SP - 387 EP - 394 DO - 10.5937/ZasMat1404387J ER -
@article{ author = "Jegdić, Bore and Bobić, Biljana and Gligorijević, Bojan and Mišković-Stanković, Vesna", year = "2014", abstract = "Corrosion properties of an aluminium alloy 7000 series were investigated by different electrochemical methods. The alloy was subjected to the one-step and to a new two-step precipitation hardening. Polarization measurements in the 3.5 wt. % NaCl solution have shown a more positive value of the pitting potential (Epit) and a higher corrosion resistance for the two-step aged alloy. The electrochemical impedance spectroscopy (EIS) has also shown that the two-step aged alloy has better corrosion properties (higher value of polarization resistance, Rp, and lower value of double-layer capacitance, Cdl) comparing to the one-step aged alloy., Otpornost prema koroziji aluminijumske legure serije 7000 ispitivana je primenom različitih elektrohemijskih metoda. Legura je bila podvrgnuta jednostepenom i novom dvostepenom termičkom taloženju. Polarizaciona merenja u 3,5 mas.% NaCl su pokazala da legura posle dvostepenog termičkog taloženja ima pozitivniju vrednost potencijala pitinga (Epit) i veću otpornost prema koroziji. Spektroskopija elektrohemijske impedancije (SEI) je takođe pokazala da legura posle dvostepenog termičkog taloženja ima bolju otpornost prema koroziji (veću vrednost polarizacione otpornosti, Rp i manju vrednost kapacitivnosti dvojnog sloja, Cdl) u poređenju sa legurom posle jednostepenog termičkog taloženja.", publisher = "Belgrade, Serbia : Engineering Society for Corrosion", journal = "Zaštita materijala", title = "Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening, Otpornost prema koroziji aluminijumske legure serije 7000 posle novog dvostepenog termičkog taloženja", volume = "55", number = "4", pages = "387-394", doi = "10.5937/ZasMat1404387J" }
Jegdić, B., Bobić, B., Gligorijević, B.,& Mišković-Stanković, V.. (2014). Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening. in Zaštita materijala Belgrade, Serbia : Engineering Society for Corrosion., 55(4), 387-394. https://doi.org/10.5937/ZasMat1404387J
Jegdić B, Bobić B, Gligorijević B, Mišković-Stanković V. Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening. in Zaštita materijala. 2014;55(4):387-394. doi:10.5937/ZasMat1404387J .
Jegdić, Bore, Bobić, Biljana, Gligorijević, Bojan, Mišković-Stanković, Vesna, "Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening" in Zaštita materijala, 55, no. 4 (2014):387-394, https://doi.org/10.5937/ZasMat1404387J . .