Short-carbon-fibers (C_sf) reinforced Ti₃SiC₂ matrix composites (C_sf/Ti₃SiC₂, the C_sf content was 0 vol%, 2 vol%, 5 vol%, and 10 vol%) were fabricated by spark plasma sintering (SPS) using Ti₃SiC₂ powders and C_sf as starting materials at 1300 °C. The effects of C_sf addition on the phase compositions, microstructures, and mechanical properties (including hardness, flexural strength (σ_f), and K_IC) of C_sf/Ti₃SiC₂ composites were investigated. The C_sf, with bi-layered transition layers, i.e., TiC and SiC layers, were homogeneously distributed in the as-prepared C_sf/Ti₃SiC₂ composites. With the increase of C_sf content, the K_IC of C_sf/Ti₃SiC₂ composites increased, but the σ_f decreased, and the Vickers hardness decreased initially and then increased steadily when the C_sf content was higher than 2 vol%. These changed performances (hardness, σ_f, and K_IC) could be attributed to the introduction of C_sf and the formation of stronger interfacial phases.

通过以下方法制备了短碳纤维（C _sf）增强的Ti ₃ SiC ₂基复合材料（C _sf / Ti ₃ SiC ₂，C _sf含量为0 vol％，2 vol％，5 vol％和10 vol％）。使用Ti ₃ SiC ₂粉末和C _sf作为起始材料在1300°C下进行火花等离子体烧结（SPS）。C的作用_SF添加对相组成，微结构和机械性质（包括硬度，弯曲强度（σ _˚F），和ķ _IC）C的_SF / Ti的₃碳化硅₂复合材料进行了调查。的C _SF，具有双层过渡层，即TiC和的SiC层，被均匀地分布在所制备的Ç _SF / Ti的₃的SiC ₂复合材料。与C的增加_SF内容时，ķ _IC的C _SF / Ti的₃的SiC _2个复合材料增加，但σ _˚F降低，且维氏硬度最初下降，然后稳步增加当C _SF含量高于2％（体积）。这些改变性能（硬度，σ _˚F和ķ _IC）可能归因于C _sf的引入和更强的界面相的形成。