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Surface and Corrosion Properties of AA6063-T5 Aluminium Alloy in Molybdate-containing Sodium Chloride Solutions
Abstract
Corrosion properties of aluminium alloy AA6063-T5 were investigated in molybdate-containing NaCl solutions. Electrochemical, microscopic, and spectroscopic experiments were utilized to examine the mechanism of corrosion inhibition by molybdates. SEM-EDX, magnetic force, and intermodulation electrostatic force microscopy data suggested that the inhibition initiation preferentially occurred over Fe-rich cathodic IMPs. Spectroscopic measurements demonstrated that the formed surface layer consists of mixed Mo(VI, V, IV) species. This layer provided inhibition with an efficiency of ∼90% after 4 h of exposure. High efficacy of ∼70% was achieved even after one week of exposure. A two-step oxidation-reduction mechanism of corrosion inhibition by aqueous molybdates was proposed
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Authors (9)
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Dmitry Kharitonov Dr.
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Illia Dobryden
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Birhan Sefer
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Angelika Wrzesińska
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Irina Makarova
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Izabela Bobowska
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Irina Kurilo Prof.
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Per Claesson Prof.
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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CORROSION SCIENCE
no. 171,
ISSN: 0010-938X - Language:
- English
- Publication year:
- 2020
- Bibliographic description:
- Kharitonov D., Dobryden I., Sefer B., Ryl J., Wrzesińska A., Makarova I., Bobowska I., Kurilo I., Claesson P.: Surface and Corrosion Properties of AA6063-T5 Aluminium Alloy in Molybdate-containing Sodium Chloride Solutions// CORROSION SCIENCE -Vol. 171, (2020), s.108658-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.corsci.2020.108658
- Verified by:
- Gdańsk University of Technology
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