摘要
利用直接金属氧化法制备了SiC颗粒增强Al2O3-Al基复合材料,借助于XRD和光学显微镜对该复合材料的组成及微观结构进行了观察,分析了SiO2层、合金成分和制备温度对复合材料性能的影响。结果表明:该复合材料结构致密且渗透完全,微观结构由三种相互穿插相组成:SiC预制体、连续的Al2O3基体及呈网状结构分布的未被氧化的残余铝合金。
SiCp/Al2O3-Al composites were synthesized by directed oxidation of metals. The composition and microstructure of the composites were investigated using XRD and metallurgical microscopy. The effects of SiO2 layer clinging to SiCp alloy components and technical parameters on the properties were analyzed. The spontaneous penetration was nearly perfect and the SiCp/Al2O3→Al composite had a dense microstructure. The microstructrue consisted of three interpenetrating phases: SiC preform, a continuous α-Al2O3 matrix and a network of unoxidized aluminum alloy.
出处
《机械工程材料》
CAS
CSCD
北大核心
2005年第6期27-29,47,共4页
Materials For Mechanical Engineering
基金
国家杰出青年科学基金资助项目(50372037)陕西科技大学自然科学基金资助项目(ZX04-14)
