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采用液态浸渍法制备ＳｉＣ晶须和Ｂ４Ｃ颗粒混杂增强剂，成功地制备出增强剂含量为２４％的复合材料，并对材料的机械性能进行了测试，复合材料的抗拉强度达到了４１６ＭＰａ，弹性模量达到了８０ＧＰａ，较其基体材料分别提高了５３％和１１０％。对材料的断口分析表明，增强剂的均匀分布及晶须与基体之间的牢固结合，是复合材料具有较高机械性能的原因，而颗粒与基体界面间的开裂，以及基体共晶相的脆性开裂是复合材料塑性低的主要原因。
SiC whiskers and B4C particle hybrid reinforcements were prepared by liquid immersion method. The composite with 24% reinforcing agent content was successfully prepared and the mechanical properties of the composites were tested. The tensile strength of the composites reached 416MPa, the elastic Modulus reached 80GPa, compared with the base material increased by 53% and 110%. The fracture analysis of the material shows that the uniform distribution of reinforcing agent and the strong bond between the whisker and the matrix are the reasons for the high mechanical properties of the composite material. The cracking between the particles and the matrix interface and the brittleness of the matrix eutectic phase Cracking is the main reason for the low plasticity of composites.