Effect Of Different Ti-Sn Intermetallic Compounds Addition On Synthesis Of Ti2snc By Self-Propagating High-Temperature Combustion Technique

The higher purity of Ti2SnC ternary compounds has been successfully synthesized by self-propagating high-temperature synthesis (SHS) technique with elemental Ti, Sn, C, and some different Ti-Sn intermetallic compounds powders as raw materials. The molar ratio of Ti/Sn/C was set 2:1:1. The results show that the additions of Ti5Sn3 and Ti2Sn play a different role in the synthesis of Ti2SnC and the optimum addition content are both 20%. Meanwhile, the reaction mechanism for the formation of Ti2SnC in the system is confirmed that the Ti5Sn3 intermetallic compound reactswith TiC to form Ti2SnC, rather than Ti2Sn. And Ti2SnC will partly decompose into Ti5Sn3 and TiC at higher temperatures.