Abstract
This review provides a detailed analysis of the influence of high-velocity oxygen-fuel spraying (HVOF) parameters on the microstructure formation and performance characteristics of chromium carbide-nickel-chromium (Cr 3 C 2 –NiCr) coatings. Key structural parameters, including density, porosity, adhesive strength, and microhardness, which determine the mechanical behavior of the coating under intense external loads, are investigated. Particular attention is paid to the mechanism of wear resistance, adhesion strength to the substrate, and resistance to fatigue failure, which is critical for operation under extreme mechanical stress. The effect of various HVOF spraying modes on the phase features of the coatings, as well as their correlation with performance characteristics, is considered. Based on the analysis, promising areas of application of Cr 3 C 2 –NiCr coatings in the aviation, energy and mechanical engineering industries are formulated, requiring a combination of high wear resistance and thermal stability.