Please use this identifier to cite or link to this item: https://dspace.ctu.edu.vn/jspui/handle/123456789/71632
Title: Characteristics of plasma electrolytic oxidation coatings on 6061 al alloy prepared at different current densities
Authors: Tran, Quang-Phu
Dao, Van-Da
Pham, Van-Hoi
Keywords: Plasma electrolytic oxidation (PEO)
Current density
6061 Al alloy
Micro-hardness
Corrosion resistance
Issue Date: 2020
Series/Report no.: Vietnam Journal of Science and Technology;Vol. 58, No. 06 .- P.699-708
Abstract: Plasma electrolytic oxidation (PEO) has earned much attention due to its powerful and easy formation of hard and corrosion-resistant oxide layers on valve metals, such as Al alloys. Here we report the effects of current density (CD) on microstructure and properties of coatings on 6061 Al alloy by PEO using direct current mode. The electrolyte contains the chemicals of Na₂ SiO₃ , Na₂WO₄ x 2H₂O, and NaH₂PO₂ x H₂O. The CDs adopted 5.0, 7.5, 10.0, and 12.5 A/dm², respectively, for a fixed PEO time of 30 min. The thickness, surface morphology, phase composition, hardness, and corrosion resistance of PEO coatings as a function of the applied CD have been studied and discussed.
URI: https://dspace.ctu.edu.vn/jspui/handle/123456789/71632
ISSN: 2525-2518
Appears in Collections:Khoa học và Công nghệ

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