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采用机械合金化和氩气保护热压方法制取ＭｏＳｉ２材料并研究了Ｃｏ对ＭｏＳｉ２组织和性能的影响。结果表明：在ＭｏＳｉ２中加入Ｃｏ后，生成两个相，一个为ＭｇＺｎ２型六方结构的（ＣｏＭｏＳｉ）三元化合物λ１相，另一个可能是复杂的硅酸盐或陶瓷化合物。加入适量的Ｃｏ能明显提高ＭｏＳｉ２的断裂韧性和抗弯强度。
MoSi2 was prepared by mechanical alloying and argon hot pressing, and the effect of Co on the microstructure and properties of MoSi2 was investigated. The results show that two phases, one is the (CoMoSi) ternary compound λ1 phase of MgZn2 hexagonal structure and the other is complex silicate or ceramic compound after adding Co in MoSi2. Adding appropriate amount of Co can obviously improve the fracture toughness and flexural strength of MoSi2.