Corrosion inhibitors in PEO-coatings on aluminum alloys

The corrosion properties of coatings obtained by plasma-electrolytic oxidation (PEO) in silicate and borate electrolytes on AMg-5 and D17 aluminum alloys are studied. An increase in PEO-coating thickness on AMg-5 alloy obtained in borate electrolyte does not provide an increase in their corrosion re...

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Bibliographic Details
Published in:Protection of metals and physical chemistry of surfaces 2014-12, Vol.50 (7), p.893-897
Main Authors: Oleinik, S. V., Rudnev, V. S., Kuzenkov, Yu. A., Yarovaya, T. P., Trubetskaya, L. F., Nedozorov, P. M.
Format: Article
Language:English
Subjects:
Alloys
Aluminum base alloys
Borates
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coatings
Corrosion and Coatings
Corrosion prevention
Corrosion resistance
Electrolytes
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Metallic Materials
Protective Coatings
Tribology
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Summary:The corrosion properties of coatings obtained by plasma-electrolytic oxidation (PEO) in silicate and borate electrolytes on AMg-5 and D17 aluminum alloys are studied. An increase in PEO-coating thickness on AMg-5 alloy obtained in borate electrolyte does not provide an increase in their corrosion resistance in chloride media. The greatest contribution to increasing the corrosion resistance of such coatings is made by filling them with corrosion inhibitors. Additional hydrophobization by low molecular fluoroplast increases the protective action of such inhibited coatings.
ISSN:2070-2051
2070-206X
DOI:10.1134/S2070205114070120