Ti2SnC ceramic is a new type of structural ceramic that is machinable and possesses a unique layered structure. It combines the excellent properties of both metals and ceramics: similar to metals, it offers good electrical and thermal conductivity, machinability, high damage tolerance, and thermal shock resistance; similar to ceramics,
It has excellent properties such as high elastic modulus, high-temperature resistance, oxidation resistance, and corrosion resistance. Based on these advantages, Ti2SnC ceramics have the potential to be widely used as a matrix or reinforcement in high-tech fields such as aviation, aerospace, weaponry, nuclear industry, and electronic information.
Although Ti₂SnC ceramics possess excellent comprehensive properties and broad application prospects, the preparation of this material is relatively difficult and its purity is hard to control, thereby limiting the application of Ti₃SnC₂ ceramics. As described in the literature (J. Am. Ceram. Soc. 96, No. 10, 2013), by using Fe as a sintering aid, hot-pressing sintering of elemental mixed powders was carried out at 1150 °C and 50 MPa for 10 hours.
A Ti₃SnC₂ ceramic containing FeₓSnᵧ, Sn, and TiC was obtained. As described in the literature (J. Am. Ceram. Soc. 99, No. 7, 2016), using Ti, Sn, and graphite as raw materials, a Ti₂SnC ceramic containing Sn and TiC impurities was synthesized by sintering at 1600 °C for 4 hours in a tube furnace under an argon atmosphere.
The sintering holding time of the preparation method described above is relatively long, and the resulting impurity phases, TiC and FexSny, are difficult to remove, which has a very adverse effect on the performance of Ti2SnC ceramics. Therefore, preparing high-purity Ti2SnC ceramics is crucial for this purpose.The wide application of materials is of great significance.