Abstract
The paper reports the results of the Self-propagating High-temperature Synthesis (SHS) in ternary Ti–Al–C and quaternary 2xTi - 2(1-x)Zr − Al – C (x = 0.5–0.9) systems, combusted in argon and hydrogen environments. The effect of the initial mixture composition on the microstructure, phase composition, and crystallographic parameters of the synthesized compounds was investigated. Rietveld analysis of X-ray diffraction patterns was used to calculate the lattice parameters and quantitative phase composition. The combustion of the Ti–Al–C system resulted in the formation of Ti2AlC and Ti3AlC2 MAX phases (85–89%), as well as TiCx phase (11–15%). The combustion of Ti–Zr–Al–C system depending on the Ti/Zr ratio and Al and C contents, along with the main Ti2AlC, Ti3AlC2, Zr2AlC MAX phases, the FCC carbides of transition metals also formed. The highest percentage (91%) of MAX phases was produced by SHS of the 0.9Ti+0.1Zr+0.5Al+0.5C mixture in the argon atmosphere.
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