Review of plasma electrolytic oxidation of titanium substrates: Mechanism, properties, applications and limitations



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Aliofkhazraei, M. and Macdonald, D.D. and Matykina, Endzhe and Parfenov, E.V. and Egorkin, V.S. and Curran, J.A. and Troughton, S.C. and Sinebryukhov, S.L. and Gnedenkov, S.V. and Lampke, T. and Simchen, F. and Nabavi, H.F. (2021) Review of plasma electrolytic oxidation of titanium substrates: Mechanism, properties, applications and limitations. Applied Surface Science Advances, 5 . p. 100121. ISSN 2666-5239

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The plasma electrolytic oxidation is an innovative method for the surface treatment of titanium and its alloys. This review provides an overview of the historical development of the process and summarizes the current state of the art. The chemical as well as the electro- and plasma-chemical basics of the layer forming mechanisms, which comprises the substrate/electrolyte interface before discharge initiation and the different types and stages of plasma electrolytic discharge phenomena are explained within the context of titanium-based materials. How these phenomena can be influenced by the use of suitable electrolytes and controlled by the electrical regime is described. Subsequently, the microstructures and composition of the layers are described in detail, and the properties for specific applications are then discussed. The resistance of a PEO coating to corrosive environments, tribological factors, and alternating mechanical stress is viewed critically, and the extensive functional properties such as physiological compatibility, photocatalytic activity, and decorative properties are revealed. Finally, examples of various practical applications in the medical engineering, aviation, automotive, and environmental technology fields, as well as other branches of industry, are presented.

Item Type:Article
Uncontrolled Keywords:Anodizing; Discharge; Oxide Coating; Plasma Electrolytic Oxidation; Titanium; Titanium Oxide
Subjects:Sciences > Chemistry > Chemical engineering
Sciences > Chemistry > Materials
ID Code:70860
Deposited On:02 Mar 2022 09:26
Last Modified:02 Mar 2022 10:07

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