AlCuFeB准晶颗粒增强复合材料中发现的大单胞准晶类似相  

An approximant phase with large lattice parameter in the i-AlCuFeB particle reinforced composite

作　　者：雷奕 KENZARI Samuel FOURNEE Vincent 黑祖昆[2] 

机构地区：[1]LSG2M,Ecole des Mines de Nancy,France [2]大连海事大学机电与材料学院

出　　处：《电子显微学报》2007年第6期548-553,共6页Journal of Chinese Electron Microscopy Society

摘　　要：在二十面体准晶i-AlCuFeB颗粒增强的Al基复合材料[Al/(AlCuFeB)p]中发现了AlCuFe二十面体准晶的一种新的大单胞晶态近似相。分别用透射电镜和高分辨电镜对此近似相进行了分析,确定其结构为B心正交,其点阵常数是a=1.166nm,b=1.195nm及c=3.44nm。高分辨像还进一步给出了该相在一个伪5次轴晶面内的原子团排列情况。We present the discovery of a new crystalline approximant phase to AlCuFe icosahedral quasicrystal in the Al-based composites reinforced by icosahedral i-AlCuFeB quasicrystalline particles [ Al/（AlCuFeB） p]. This AlCuFe approximant phase was characterized by transmission electron microscopy （TEM） and high-resolution electron microscopy （HREM）. TEM experiment revealed that this phase is a Bcentered orthorhombic phase with lattice parameters of a = 1. 166 nm, b = 1. 195 nm and c = 3.44 nm. First results concerning its local atomic arrangements along one of its pseudo-5-fold are also presented.

关 键 词：Al-Cu-Fe-B 二十面体准晶相 近似相 AL基复合材料 氧化 

分 类 号：O753.2[理学—晶体学]