Abstract
The article addresses challenges related to enhancing the performance characteristics of power plant components. Research conducted by different authors demonstrates that when aiming to enhance the operational qualities of these parts, detonation spraying yields superior outcomes owing to its low porosity, high strength, and strong adhesion of the coatings produced. Also benefits of employing Ni-Cr-Al-based coatings as high oxidation resistant coating. The study involves the acquisition of Ni-Cr-Al-based gradient structured coatings using detonation spraying techniques. Investigated their phase composition and microstructures. By modifying the technological parameters during spraying, we achieved control over the properties of the resulting gradient coatings. Analysis of the elemental composition via the EDS method revealed that the Ni–Cr–Al gradient coatings possess a structured gradient, wherein the aluminum concentration progressively rises from the substrate towards the surface of the coating. The Ni–Cr–Al gradient coating thereby obtained the presence of phases NiCr with a surface of NiAl that has a high hardness and wear resistance.
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