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中文摘要：
以Mo、Si和C单质粉为原料，采用自蔓延原位合成技术制备10％SiC、20％SiC（体积分数）强韧化MoSi2复合材料，并从理论上计算了自蔓延燃烧反应绝热温度。结果表明，常规自蔓延能够合成10％SiC／MoSi2复合粉体，而通过“化学炉”辅助燃烧能够合成20％SiC／MoSi2材料。复合粉末主要由MoSi2和SiC相组成，SiC颗粒分布均匀，与MoSi2基体结合良好，其断裂机理为穿晶断裂。
英文摘要：
Strengthened and toughened MoSi2 composites with 10% SiC and 20% SiC （volume fraction） were fabricated by high temperature self-propagating synthesis with Mo, Si and C elementary powders as raw materials. The adiabatic temperature of combustion reaction was calculated theoretically. The results indicated that the synthesis of 10% SiC/MoSi2 composite powders was possible by conventional high temperature self-propagating. However, 20% SiC/MoSi2 composites could be synthesized by ＂Chemical Oven＂-aided combustion method. The phase composition of SiC/MoSi2 composites mainly included MoSi2 and SiC. The SiC particles were homogeneously distributed and combined well with MoSi2 matirx. The fracture mechanism of the composites is transgranular fracture.
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