Corrosion resistance of boron-bearing aluminum alloys and its increase after plasma electrolytic oxidation

The corrosion resistance of plates of a boron-bearing aluminum alloy has been studied. It has been shown that the alloy exhibits a high corrosion resistance in deionized water and an aqueous solution containing 16 g/L of boric acid; only after exposure to an aqueous solution containing 1.5 g/L of su...

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Bibliographic Details
Published in:Protection of metals and physical chemistry of surfaces 2014-12, Vol.50 (7), p.889-892
Main Authors: Kurbatkina, E. I., Rakoch, A. G., Belov, N. A., Avanesyan, T. G.
Format: Article
Language:English
Subjects:
Alloys
Aluminum base alloys
Aqueous solutions
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Corrosion prevention
Corrosion resistance
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Metallic Materials
Oxalic acid
Oxidation
Protective Coatings
Sodium
Tribology
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Summary:The corrosion resistance of plates of a boron-bearing aluminum alloy has been studied. It has been shown that the alloy exhibits a high corrosion resistance in deionized water and an aqueous solution containing 16 g/L of boric acid; only after exposure to an aqueous solution containing 1.5 g/L of sulphanol, 3.5 g/L of sodium hexametaphosphate, and 5 g/L of oxalic acid does the sample undergoes significant destruction induced by its general corrosion. However, dielectric coatings prepared by plasma electrolytic oxidation protect the boron-bearing aluminum alloy from corrosion, including the case of its being in contact with stainless steel under conditions involving the use of containers to provide long-term radiation protection.
ISSN:2070-2051
2070-206X
DOI:10.1134/S2070205114070107