Influence of the Porosity of a Plasma-Electrolytic Coating on the Corrosion Resistance of D16 Alloy

We study the effect of the coating thickness on the corrosion resistance and porosity of oxide-ceramic coatings on D16 alloy. The coatings were synthesized in an alkaline solution for 10, 60, and 120 min at a current density of 10 A/dm 2 . As a result, the coatings with thicknesses of ∼ 8–12, 50–70,...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) N.Y.), 2019-05, Vol.54 (6), p.899-906
Main Authors: Student, M. M., Ivasenko, I. B., Posuvailo, V. M., Veselivs’ka, H. H., Pokhmurs’kyi, A. Yu, Sirak, Ya. Ya, Yus’kiv, V. M.
Format: Article
Language:English
Subjects:
Acid deposition
Air pollution
Alloys
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coatings
Materials Science
Porosity
Sodium chloride
Solid Mechanics
Specialty metals industry
Steel corrosion
Structural Materials
Water
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Summary:We study the effect of the coating thickness on the corrosion resistance and porosity of oxide-ceramic coatings on D16 alloy. The coatings were synthesized in an alkaline solution for 10, 60, and 120 min at a current density of 10 A/dm 2 . As a result, the coatings with thicknesses of ∼ 8–12, 50–70, and 80–120 μm, respectively, were formed on the surface of the alloy. The corrosion resistance of the coatings was investigated in a medium of weakly acid rain and in a 3% NaCl solution in water. We established the correlation between the porosity and corrosion resistance of the coatings. The oxide-ceramic coatings synthesized on D16 alloy for 60 min have the lowest porosity and the highest corrosion resistance.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-019-00278-z