The formation mechanism of Ti₃SnC₂ was evaluated in the present work. A stoichiometric ratio of a Ti-Sn-C powder mixture was prepared and milled for 50 h. To synthesize and detect intermediate reactions, a 50 h milled sample was thermally analyzed by STA. XRD instrument was utilized to detect phases of powder samples and the microstructure of the final product was obtained by SEM. The results showed that only Ti₆Sn₅ and Ti₅Sn₃ with Fe₃Sn₂ formed after 50 h milling, and no peaks related to MAX phases were found. To detect the reaction mechanism, the 50 h milled powder after STA analysis was characterized by XRD. Many intermediate reactions such as Ti_xSn_y, TiC, and Ti₂SnC formations took place. The melting of Fe_xSn_y during STA analysis promoted the Ti₃SnC₂ formation. These results confirmed that Ti₃SnC₂ formation is not happened by a single reaction and many intermediate phases must be formed and Ti₃SnC₂ was synthesized after 50 h ball milling and thermally treated by STA analysis to 1400 °C.

在本工作中评估了Ti ₃ SnC ₂的形成机理。制备化学计量比的Ti-Sn-C粉末混合物，并研磨50小时。为了合成和检测中间反应，通过STA对50小时研磨的样品进行了热分析。利用XRD仪器检测粉末样品的相，并通过SEM获得最终产品的微观结构。结果表明，只有Ti ₆ Sn ₅和Ti ₅ Sn ₃与Fe ₃ Sn ₂研磨50小时后形成，没有发现与MAX相有关的峰。为了检测反应机理，通过XRD对STA分析后的50 h研磨粉进行了表征。发生了许多中间反应，例如Ti _x Sn _y，TiC和Ti ₂ SnC形成。STA分析过程中Fe _x Sn _y的熔化促进了Ti ₃ SnC _2的形成。这些结果证实了Ti ₃ SnC _2的形成不是通过一个单一的反应就可以发生，而是必须形成许多中间相，并且Ti ₃ SnC ₂ 经过50 h球磨后合成合成物，并通过STA分析将其热处理至1400°C。