Study of the Degradation Kinetics of Strength Properties of Multilayer Oxy-nitride Coatings during Hydrogenation
Suleimenova R. Moldabayeva G.Zh. Kozlovskiy А.L. Toktarbay Z. Kuanyshev A. Zhaxylykova M.
September 2025Engineered Science Publisher
ES Materials and Manufacturing
2025#29
The paper presents the results of comprehensive studies aimed at study of the possibility of using AlN-TiO2 coatings as protective coatings that inhibit hydrogenation processes that occur during long-term exposure to hydrogen sulfide on steel structures used in the oil industry. The proposed protective AlN-TiO2 coatings, according to the conducted studies of the kinetics of hydrogen accumulation in the near-surface layers, make it possible to significantly slow down the processes of hydrogen-induced corrosion and destabilization of the near-surface layers of steel during prolonged contact of the surface with aggressive environments. In the course of the conducted studies, the main mechanisms of development of degradation of the near-surface layers during hydrogenation were determined depending on the time of stay of the studied samples in model solutions, and the influence of thermal heating of the model solution on the rate of destruction of strength parameters was determined. It was established that the model solution temperature growth from 25 °C to 90 °C leads to a more than twofold acceleration of the processes of destabilization of the strength parameters for the studied coatings during long-term exposure of the surface to an aggressive environment. Moreover, the use of AlN-TiO2 coatings, in comparison with the results of changes in the strength parameters of steel, made it possible to reduce the degradation rate of the strength parameters of the near-surface layer by more than 1.5 times at room temperature and 2 times at a model solution temperature of 90 °C.
Degradation , Hydrogenation , Loss of strength , Protective sacrificial coatings , Resistance enhancement
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Department of Petroleum Engineering, Satbayev University, Almaty, 050013, Kazakhstan
Safi Utebaev Atyrau, University of Oil and Gas, Atyrau, 060027, Kazakhstan
Laboratory of Solid-State Physics, The Institute of Nuclear Physics, Ibragimov Street, Almaty, 050032, Kazakhstan
Nazarbayev University, Astana, 010000, Kazakhstan
Department of Petroleum Engineering
Safi Utebaev Atyrau
Laboratory of Solid-State Physics
Nazarbayev University
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