Research on the Structural–Phase and Physical–Mechanical Characteristics of the Cr3C2-NiCr Composite Coating Deposited by the HVOF Method on E110 Zirconium Alloy
Kurbanbekov S. Rakhadilov B. Kakimzhanov D. Seitov B. Katpaeva K. Kurmantayev A. Dautbekov M. Kengesbekov A.
August 2024Multidisciplinary Digital Publishing Institute (MDPI)
Coatings
2024#14Issue 8
Composite coatings based on chromium carbide (Cr3C2) and nickel–chromium alloys (NiCr) are widely used due to their unique properties, including high heat resistance, wear resistance and corrosion resistance. This article studies the structural–phase and physical–mechanical characteristics of Cr3C2-NiCr composite coatings applied by high-velocity oxygen fuel to E110 zirconium alloy. The HVOF method was chosen to create coatings with high adhesion to the substrate and excellent performance properties. Analysis of the microstructure of the cross-section showed the thickness of the modified surface layer from 75 to 110 μm, depending on the processing modes. Energy dispersive X-ray spectral analysis revealed the presence of elements Cr, Ni, C and O in the coating composition. Structural–phase analysis confirmed the formation of coatings with a high concentration of Cr3C2 carbide particles and NiCr (nickel–chromium) phases. The resulting composite coatings based on Cr3C2-NiCr had a significantly high microhardness, ranging from HV 1190 to HV 1280, and the friction coefficient varied in a significant range from 0.679 to 0.502 depending on the processing conditions. The maximum adhesion strength was 9.19 MPa per square centimeter.
Cr3C2-NiCr coating , deposition efficiency , E110 zirconium substrate , HVOF
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International Kazakh-Turkish University named H.A.Yasavi, Turkestan, 161200, Kazakhstan
LLP “Institute of Innovative Technologies and New Materials”, Turkestan, 161200, Kazakhstan
S. Amanzholov East Kazakhstan University, Ust-Kamenogorsk, 070000, Kazakhstan
Plasma Science LLP, Ust-Kamenogorsk 070000, Kazakhstan
Engineering Centre “Innotechmash”, Ust-Kamenogorsk 070000, Kazakhstan
Institute of Composite Materials, Ust-Kamenogorsk, 070000, Kazakhstan
International Kazakh-Turkish University named H.A.Yasavi
LLP “Institute of Innovative Technologies and New Materials”
S. Amanzholov East Kazakhstan University
Plasma Science LLP
Engineering Centre “Innotechmash”
Institute of Composite Materials
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