Design of a Two-Layer Al–Al2O3 Coating with an Oxide Layer Formed by the Plasma Electrolytic Oxidation of Al for the Corrosion and Wear Protections of Steel

Design of a tWo-layer al-al 2 o 3 coating With an oxiDe layer forMeD by the PlasMa electrolytic oxiDation of al for the corrosion anD Wear Protections of steel the article analyses technologies for the formation of coatings to protect machine and equipment parts from corrosion and wear in aggressive environments.the study considers plasma electrolytic oxidation (Peo) regimes of valve metal materials on the core, microstructure, and physical and mechanical properties of oxide coatings.to solve this problem, it is promising to develop a combined technology: application of a layer of aluminium on the surface of steel parts followed by its Peo. the purpose of this work is a theoretical study of the temperature distribution in a steel cylinder covered with a layer of aluminium during Peo to substantiate the thickness of the layers of the two-layer aluminium-aluminium oxide coating.An installation for Peo and a technological process of forming a two-layer Al-Al 2 o 3 coating on long-dimensional parts are developed.A mathematical model is created for an infinite three-layer cylinder with an internal coaxial surface cylindrical source of C i t a t i o n: l. ropyak, t.Shihab, A. Velychkovych, o. dubei, t. tutko, and V. Bilinskyi, design of a two-layer Al-Al 2 o 3 Coating with an oxide layer Formed by the Plasma electrolytic oxidation of Al for the Corrosion and Wear Protections of Steel, Progress in Physics of Metals, 24, No.