This article describes the manufacturing of silicon carbide composites with the addition of quasi-two-dimensional titanium carbide Ti₃C₂, known as MXene. The composites were obtained by the powder metallurgy technique, consolidated with the use of the Spark Plasma Sintering method at 1900 °C and dwelled for 30 min. The influence of the Ti₃C₂ MXene addition on the microstructure and mechanical properties of the composites was investigated. The structure of the MXene phase after the sintering process was also analyzed. The results showed a significant increase (almost 50%) of fracture toughness for composites with the addition of 0.2 wt% Ti₃C₂ MXene. In turn, the highest hardness, 23.2 GPa, was noted for the composite with the addition of the 1.5 wt% Ti3C2 MXene phase. This was an increase of over 10% in comparison to the reference sample. The analysis of chemical composition and observations using a transmission electron microscope showed that the Ti3C2 MXene phase oxidizes during sintering, resulting in the formation of crystalline, highly defected, disordered graphite structures. The presence of these structures in the microstructure, similarly to graphene, significantly affects the hardness and fracture toughness of silicon carbide.

本文介绍了通过添加准二维碳化钛Ti ₃ C ₂（称为MXene）来制造碳化硅复合材料的方法。通过粉末冶金技术获得复合材料，并在1900°C下通过放电等离子烧结方法进行固结，并保持30分钟。研究了Ti ₃ C ₂ MXene的添加对复合材料微观结构和力学性能的影响。还分析了烧结过程之后的MXene相的结构。结果表明，添加0.2 wt％的Ti ₃ C ₂可使复合材料的断裂韧性显着提高（几乎50％）MXene。相应地，在添加1.5 wt％Ti3C2 MXene相的情况下，复合材料的最高硬度为23.2 GPa。与参考样品相比，增加了10％以上。化学成分分析和使用透射电子显微镜的观察结果表明，Ti3C2 MXene相在烧结过程中被氧化，导致形成结晶的，高度缺陷的，无序的石墨结构。类似于石墨烯，这些结构在微观结构中的存在会显着影响碳化硅的硬度和断裂韧性。