Study of Plasma Electrolytic Oxidation Coatings on Aluminum Composites
AbstractCoatings, with a thickness of up to 75 µm, were formed by plasma electrolytic oxidation (PEO) under the alternating current electrical mode in a silicate-alkaline electrolyte on aluminum composites without additives and alloyed with copper (1–4.5%). The coatings’ structure was analyzed by scanning electron microscopy, X-ray microanalysis, X-ray photoelectron spectroscopy, nuclear backscattering spectrometry, and XRD analysis. The coatings formed for 60 min were characterized by excessive aluminum content and the presence of low-temperature modifications of alumina γ-Al2O3 and η-Al2O3. The coatings formed for 180 min additionally contained high-temperature corundum α-Al2O3, and aluminum inclusions were absent. The electrochemical behavior of coated composites and uncoated ones in 3% NaCl was studied. Alloyage of aluminum composites with copper increased the corrosion current density. Plasma electrolytic oxidation reduced it several times. View Full-Text
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Agureev, L.; Savushkina, S.; Ashmarin, A.; Borisov, A.; Apelfeld, A.; Anikin, K.; Tkachenko, N.; Gerasimov, M.; Shcherbakov, A.; Ignatenko, V.; Bogdashkina, N. Study of Plasma Electrolytic Oxidation Coatings on Aluminum Composites. Metals 2018, 8, 459.
Agureev L, Savushkina S, Ashmarin A, Borisov A, Apelfeld A, Anikin K, Tkachenko N, Gerasimov M, Shcherbakov A, Ignatenko V, Bogdashkina N. Study of Plasma Electrolytic Oxidation Coatings on Aluminum Composites. Metals. 2018; 8(6):459.Chicago/Turabian Style
Agureev, Leonid; Savushkina, Svetlana; Ashmarin, Artem; Borisov, Anatoly; Apelfeld, Andrey; Anikin, Kirill; Tkachenko, Nikita; Gerasimov, Mikhail; Shcherbakov, Aleksandr; Ignatenko, Vasily; Bogdashkina, Natalia. 2018. "Study of Plasma Electrolytic Oxidation Coatings on Aluminum Composites." Metals 8, no. 6: 459.
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