Self-Propagating High-Temperature Synthesis in Ti-Al-C Powder System Using Various Carbon Precursors

The processes of self-propagating high-temperature synthesis (SHS) in the Ti-Al-C powder system were investigated. Hexamethylenetetramine, polytetrafluoroethylene and amorphous carbon were used as carbon precursors. It was shown that the character of the SHS process and its main parameters are determined by the type of the chosen carbon-containing precursor and by the method of the initial powder samples preparation. It was established that the usage of chosen carbon precursors allows the synthesis of nanostructure composite materials containing titanium carbide and MAX phase Ti2AlС, while in powder systems Ti-Al-hexamethylenetetramine and Ti-Al-amorphous carbon, the synthesis of MAX phase Ti3AlС2 occurs under certain conditions