液态搅拌铸造SiC<sub>P</sub>及SiO<sub>2(P)</sub> 增强Al-4wt%Mg基复合材料的界面反应研究

液态搅拌铸造SiC_P及SiO_2(P) 增强Al-4wt%Mg基复合材料的界面反应研究

基金项目: 国家自然科学基金资助项目

详细信息

1.
Department of Materials, Huazhong University of Science and Technology, Wuhan 430074;
2.
Shanghai Jiao Tong University, Shanghai 200030

摘要

摘要: 利用分析透射电镜研究了液态搅拌铸造原始态与氧化态SiC_P 以及SiO_2(P) 增强Al-4wt%Mg 基复合材料的界面反应情况。结果在原始态和氧化态碳化硅颗粒表面观察到细小的MgO , 石英粒子在高温下与基体中的镁反应生成MgAl₂O₄, 并运用扩散理论分别解释了其反应机制。
- 液态搅拌铸造, SiC, SiO₂, 界面反应
Abstract: The interfacial reaction of liquid stirred cast SiC_P and SiO_2(P) reinforced Al4wt%Mg matrix composites was studied by means of analytical transmission electronic microscope. The results show that the fine MgO particles are formed on the surface of as received SiC particle and oxidized one. The quartz particles reacted with magnesium in matrix to form MgAl₂O₄. And the reaction mechanisms are explained respectively with the diffusion theory.
- liquid stirred cast