中文摘要：

采用放电等离子烧结（spark plasma sintering,SPS）工艺制备了Ti3AlC2/TiB2复合材料,并研究了复合材料的性能。研究表明：在1250℃,30MPa烧结8min,可以获得相对密度达98%以上的致密Ti3AlC2/TiB2块体材料;在Ti3AlC2中添加TiB2能大幅度提高材料性能,当TiB2含量为30%（体积分数,下同）时,Ti3AlC2/30%TiB2复合材料的Vickers硬度达到10.39GPa,电导率为3.7×10^6v S/m;当TiB2含量为10%时,抗弯强度为696MPa,断裂韧性为6.6MPa.m^1/2。用电子显微镜对复合材料的显微结构分析表明：Ti3AlC2/TiB2复合材料的晶粒为层状结构。

英文摘要：

Ti3AlC2/TiB2 composites were prepared by the spark plasma sintering （SPS） process with different volume fractions of TiB2, and the properties of Ti3AlC2/TiB2 composites were investigated. The results indicated that the bulk Ti3AlC2/TiB2 with a relative density of 98% was fabricated by SPS under 30MPa and at 1 250℃ for 8min. The Vickers hardness, the flexural strength and fracture toughness and electric conductivity of Ti3AlC2/TiB2 composites are greatly enhanced with the addition of TiB2. The Vickers hardness and electric conductivity of Ti3AlC2/30%（in volume） TiB2 are 10.39 GPa and 3.7×10^6 S/m, respectively. When the volume fraction of TiB2 is 10%, the flexural strength and fracture toughness reach the maximum values, which are 696 MPa and 6.6 MPa·m^1/2, respectively. The microstructure characteristics of the Ti3AlC2/TiB2 composites were analyzed using an electron microscope. The results show that the grains of Ti3AlC2/TiB2 composites are structured in a layered form.