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Effect of sodium vanadate on corrosion of AD31 aluminum alloy in acid media
KTH. Belarusian State Technological University, Belarus.ORCID iD: 0000-0003-2071-3975
2017 (English)In: Russian journal of applied chemistry, ISSN 1070-4272, E-ISSN 1608-3296, Vol. 90, no 7, p. 1089-1097Article in journal (Refereed) Published
Abstract [en]

Scanning electron microscopy, potentiodynamic polarization method, and electrochemical impedance spectroscopy were used to study the corrosion behavior of AD31 (AA6063) aluminum alloy in acid (pH 3) 0.05 M NaCl solutions containing 3 mmol dm(-3) of NaVO3 inhibitor. It was found that the corrosion of AD31 alloy in acid sodium chloride solutions predominantly occurs locally at aluminum/intermetallic particle phase boundaries and is limited by the electrochemical stage of charge transfer. It was shown that introduction of sodium vanadate can reduce the rate of selective dissolution of magnesium from the alloy and provides a protective effect on the level of 7-10%.

Place, publisher, year, edition, pages
Maik Nauka-Interperiodica Publishing , 2017. Vol. 90, no 7, p. 1089-1097
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Chemical Sciences
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URN: urn:nbn:se:kth:diva-219354DOI: 10.1134/S1070427217070102ISI: 000415280100010Scopus ID: 2-s2.0-85034240652OAI: oai:DiVA.org:kth-219354DiVA, id: diva2:1162667
Note

QC 20171205

Available from: 2017-12-05 Created: 2017-12-05 Last updated: 2017-12-05Bibliographically approved

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Kharitonov, Dzmitry S.

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