(1.哈尔滨工业大学材料科学与工程学院,哈尔滨 100051;
2.北京有色金属研究总院, 北京 100088)
摘 要: 粉末冶金制备的SiCp/Al复合材料中,基体与增强体之间存在多种界面类型。 除了少数的干净界面、 台阶界面外,具有纳米厚度的界面微区在材料中占大多数。 进一步研究发现: 界面微区是铝多晶体, 而且微区中存在镁元素富集, 并分布着点状的MgAl2O4氧化物。
关键字: 粉末冶金 SiCp/Al 界面结构
(1.Harbin Institute of Technology, Harbin 150001, P. R. China;
2.General Research Institute for Non-ferrous Metals, Beijing 100088, P. R. China )
Abstract:There are several typies of interface in SiCp/Al composites fabricated by powder metallurgy. Besides a few of the planar and clean interfaces, there are a large number of micro-interface-zones between the reinforcements and the matrix, which comprised of the aluminium crystals with different orientation from the Al matrix near the interface zone, Mg segregation and MgAl2O4 spinel particles.
Key words: powder metallurgy SiCp/Al nterfacial structure