原位合成SiC/MoSi_2复合材料的研究  

Study on SiC/MoSi_2 Composite Prepared by In-situ Synthesis

作　　者：刘利平[1] 张循良[1] 席俊杰[2] 

机构地区：[1]郑州大学化工与能源学院,河南郑州450001 [2]郑州航空工业管理学院机电工程学院,河南郑州450015

出　　处：《热加工工艺》2011年第14期89-92,共4页Hot Working Technology

基　　金：河南省国际合作项目(074300510055)

摘　　要：以Mo、Si、C原始粉末为原料,进行机械球磨混合制备混合粉,然后进行原位反应热压烧结制备SiC/MoSi2复合材料。利用X射线衍射仪、扫描电镜对试样进行物相和显微组织观察,并对原位反应机制进行了探讨。结果表明,在选定的球磨条件下,Mo、Si、C混合粉没有发生机械合金化;Mo-Si-C三元系混合粉在原位反应条件下可消除Mo5Si3C等中间相,得到的颗粒细小、相分布均匀以及相组成为SiC与MoSi2的SiC-40vol%/MoSi2复合材料。SiC/MoSi2 composite was prepared by in-situ reaction hot-pressing sintering,using Mo,Si and C as mixture powder.The mixture powder was prepared by mechanical milling-mixing process.The phase composition and microstructure of the test samples were analyzed by XRD and SEM.The in-situ reaction mechanism was discussed.The results show that the mechanical alloying does not appear in the Mo,Si and C mixture powder.Under the condition of ball-milling,SiC-40vol%/MoSi2 composite with uniform distribution of SiC and MoSi2 was prepared and Mo5Si3C interphase can be removed.

关 键 词：SiC/MoSi2 复合材料 原位反应 热压烧结 原位反应 

分 类 号：TB332[一般工业技术—材料科学与工程]