摘要
研究了低成本制备技术反应熔渗方法制备的SiC/MoSi2和SiC/Mo(Si,Al)2复合材料高温氧化行为。表面氧化物的形态和氧化增重的研究结果表明,所制备复合材料高温氧化3 h后即发生钝化现象,继续在500℃再进行低温氧化试验,发现限制该材料使用的"Pest"现象消失。其中渗铝复合材料SiC/Mo(Si,Al)2高温增重较渗硅SiC/MoSi2严重。当后者中形成的SiC增强相全部为原位反应生成时,由于界面结合力提高,抗氧化能力更强。
The high temperature inoxidizable behavior of SiC/MoSi2 and SiC/Mo（Si,Al）2 prepared by the infiltration method was studied,and the shape and weight increase induced by oxidate process were discussed in the paper.The results show that the composites will be inactive after high temperature oxidation for 3 h,and the ＂Pest＂ phenomenon will disappear when the composites continue to oxide at 500℃.The oxide mass gain of SiC/Mo（Si,Al）2 is bigger than that of SiC/MoSi2.When SiC reinforcement is in-situ formed in SiC/MoSi2composite,the ability of inoxidation is better because of the higher interface binding force.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2010年第1期104-108,共5页
Acta Materiae Compositae Sinica
