研究了低成本制备技术反应熔渗方法制备的SiC/MoSi_2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/MoSi_2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/MoSi_2 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 he 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/MoSi_2. When SiC reinforcement is in-situ formed in SiC/MoSi_2 composite, the ability of inoxidation is better because of the higher interface binding force.
参考文献
| [1] | Ranberg C E,Worrell W L.Oxidation kinetics and composite scale formation in the system Mo(Al,Si)_2[J].J Am Ceram Soc,2002,85(2):444-452. |
| [2] | Ogbuji L U J T,Opila E J.A comparison of the oxidation kinetics of SiC and Si_3N_4[J].J Electrochem Soc,1995,142(3):925-930. |
| [3] | Ramberg C E,Worrell W L.Oxygen transport in SiO_2 at high temperatures:Implications of oxidation kinetics[J].J Am Ceram Soc,2001,84(11):2607-2616. |
| [4] | 张小立,金志浩.反应熔渗法制备纳米MoSi_2-SiC复合材料[J].无机材料学报,2007,22(4):690-694.Zhang Xiaoli,Jin Zhihao.Preparation and microstructure of nano MoSi_2-SiC composite by melt infiltration process[J].Journal of Inorganic Materials,2007,22(4):690-694. |
| [5] | 张小立,金志浩.反应熔渗法制备Mo(Si,Al)_2-SiC复合材料的研究FJ].稀有金属材料与工程,2006,35(S2):71-73.Zhang Xiaoli,Jin Zhihao.The microstructure and mechanical property of Mo(Si,Al)_2 -SiC composite prepared by infiltrating melt aluminum[J].Rare Metal Materials and Engineering,2006,35(S2):71-73. |
| [6] | 孙祖庆,张来启,杨王玥.原位合成MoSi_2-SiC复合材料的室温增韧[J].金属学报,2001,37(1):104-108.Sun Zuqing,Zhang Laiqi,Yang Wangyoe.Toughening of MoSi_2-SiC Composite Synthesized in Situ[J].Acta Metallurgica Sinica,2001,37(1):104-108. |
| [7] | 常春,李木森,陈传中,田雷言.MoSi_2高温氧化层的微观结构[J].金属学报,2003,39(2):126-130.Chang Chun,Li Musen,Chen Chuanzhong,Tian Leiyan.Microstructure of high-temperature oxidation layer of molybdenum disilicide[J].Acta Metallurgica Sinica,2003,39 (2):126-130. |
| [8] | 张厚安,刘心宇,胡小平,唐果宁.MoSi_2低温氧化动力学的研究[J].湘潭矿业学院学报,2001,16(2):24-26.Zhang Houan,Liu Xinyo,Hn Xiaoping,Tang Guoning.Study on dynamics of MoSi_2 oxidized at low-temperature[J].Journal of Xiangtan Mining Institute,2001,16(2); 24-26. |
| [9] | 赵敬忠,成守权,谷臣清.铝合金熔体氧化制备Al_2O_3/SiC/Ni/Al-Si多相模糊界面陶瓷基复合材料[J].复合材料学报,2005,22(2):91-97.Zhao Jingzhong,Cheng Shouquan,Gu Chenqing,Gao Jiqiang,Jin Zhihao.Preparation of Al_2O_3/SiC/Ni/Al-Si ceramic matrix composites with multi-phase vague interface by oxidation of molten aluminum alloys[J].Acta Materiae Compositae Sinica,2005,22(2):91-97. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%