Аннотация:The results of studying a composite material based on Nb–Si–C are presented. The alloy wasobtained by aluminothermic self-propagating high-temperature synthesis. To prepare the initial charge amixture of powders of commercial niobium pentoxide Nb2O5 and commercial silicon carbide SiC was used.The process of niobium oxide Nb2O5 reduction was implemented using an aluminum powder. The study ofthe Nb–Si–C ternary system is of interest in terms of obtaining high-temperature materials of new generationfor gas turbine engine construction capable of replacing heat-resistant nickel alloys, as well as the potentialpossibility of forming MAX phases (Mn+1AXn phases, where n = 1, 2, 3, … ; M is the transition d-metal; A isthe p-element; and X is carbon). The phase composition of the obtained Nb–Si–C composite was studied byX-ray diffraction. It has been shown that as a result of high-temperature synthesis NbC carbide and γ-Nb5Si3and NbSi2 silicides are formed which are competing relative to the Nb2SiC MAX phase. The formation ofNb2SiC under the selected synthesis conditions was not detected. Using scanning electron microscopy andX-ray spectral analysis, the morphological distribution of the phases formed during high-temperature synthesisis analyzed in detail. It is shown that NbC carbide makes up the majority of the volume of the compositeand is present in the form of pyramidal-shaped particles with a pyramid face size of ~10 μm. NbSi2 silicidesare elongated rod-shaped particles with smooth edges measuring 30 × 80 μm; Nb5Si3 silicides do not have aspecific shape.