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本文研究了原位生成的ＴｉＣ／ＴｉＢ２／ＭｏＳｉ２三相复合材料的一种新的显微结构及其对力学性能的影响，结果表明，当热压金属Ｔｉ,Ｂ４Ｃ和ＭｏＳｉ２的混合粉末时，在ＭｏＳｉ２的基体内生成由ＴｉＣ和ＴｉＢ２组成的空心粒子．其中的ＴｉＣ和ＴｉＢ２粒子均为纳米粒子．具有此新显微结构的复合材料，强度达到４８０ＭＰａ，断裂韧性为５．２ＭＰａ·ｍ１／２，较单相ＭｏＳｉ２材料的力学性能有大幅度提高．
In this paper, a new microstructure of TiC / TiB2 / MoSi2 composites and its effect on the mechanical properties of TiC / TiB2 / MoSi2 composites were investigated. The results show that when the mixed powders of Ti, B4C and MoSi2 are hot pressed Hollow particles composed of TiC and TiB2 are formed in the matrix of MoSi2. One of the TiC and TiB2 particles are nanoparticles. The composite material with the new microstructure has a strength of 480MPa and a fracture toughness of 5.2MPa · m1 / 2, which is significantly improved compared with the single-phase MoSi2 material.