Synthesis of Molybdenum and Niobium Mono- and Binary Silicides by the Method of SHS-Metallurgy

The process of self‐propagating high‐temperature synthesis of the Mo–Nb–Si silicides from the powder mixtures has been investigated. Based on performed experiments, the composition of powder mixtures as well as technological parameters are proposed which provide the synthesis of monosilicides MoSi2, NbSi2, and binary silicides Mo1−хNbxSi2 with different ratios of Nb/Mo by adding different contents of MoO3 and Nb2O5. Microstructure and phase compositions of the obtained silicide ingots are characterized by scanning electron microscopy, electron probe microanalysis, X‐ray diffraction, and backscatter electron diffraction. Mono‐ and binary silicides Mo–Nb–Si with different ratios of Nb/Mo are synthesized from the highly exothermic mixtures of MoO3, Nb2O5, Si, and Al by the method of SHS‐metallurgy.