Ion-plasma spraying and electron-beam treatment of composite cr-al-co-zro2-y2 o3 coating on the surface of ni-cr alloy
Zhilkashinova A. Abilev M. Pavlov A. Prokhorenkova N. Skakov M. Gradoboev A. Zhilkashinova A.
March 2021MDPI AG
Coatings
2021#11Issue 3
The blades of modern gas turbine engines are complex structures made of heat-resistant nickel alloys with a complex system of internal cavities. The article describes a method of strengthen-ing samples of a heat-resistant Ni-Cr alloy by applying a composite coating (Cr-Al-Co + ZrO2-Y2 O3 ). The alloy prototypes were fabricated by vacuum melting. An ion-plasma technology of a two-layer coating with an inner metal and an outer ceramic layer on the prepared surface of the heat-resistant alloy matrix was developed. The morphology and structure of the alloy prototypes and the investigated composite coating were studied by scanning electron spectroscopy. The total thickness of the two-layer wear-resistant coating was 17–18 µm. The thickness of the inner layer (Cr/Al/Co) is 10–11 µm and the thickness of the outer ceramic coating (ZrO2-Y2 O3 ) is 6–7 µm. To improve the operational characteristics of the material, an electron-beam surface treatment was proposed. The research results showed a sevenfold increase in surface resistance compared with the initial state.
Composite Cr-Al-Co + ZrO2-Y2 O3 coating , Electron beam treatment , Ion-plasma spraying , Ni-Cr alloy , Performance characteristics
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National Research Laboratory for Collective Use, Sarsen Amanzholov East Kazakhstan University, 34 Tridtsatoy Gvardeiskoy Divizii Street, Ust-Kamenogorsk, 070002, Kazakhstan
School of Traditional and Alternative Energy, D. Serikbayev East Kazakhstan Technical University, 69 Protozanov Street, Ust-Kamenogorsk, 070004, Kazakhstan
Science Department, National Nuclear Center of the Republic of Kazakhstan, 2 Krasnoarmeyskaya Street, Kurchatov, 071100, Kazakhstan
Department of Experimental Physics, National Research Tomsk Polytechnic University, 2 Lenin Avenue, Tomsk, 634050, Russian Federation
National Research Laboratory for Collective Use
School of Traditional and Alternative Energy
Science Department
Department of Experimental Physics
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