Crystal structure of the primitive orthorhombic epsilon '-(Al,Si)(4)Cr phase
文献类型：期刊论文
| 作者 | He, ZB ; Kuo, KH |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2005 |
| 卷号 | 395期号:1-2页码:117 |
| 关键词 | AL-CR SYSTEM QUASI-CRYSTALS APPROXIMANT 0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-1 EQUILIBRIA SYMMETRY AL-4(CR ALLOYS FAMILY |
| ISSN号 | 0925-8388 |
| 通讯作者 | Kuo, KH: Dalian Univ Technol, Dept Mat Technol, Dalian 116024, Peoples R China. |
| 中文摘要 | The crystal structure of the primitive orthorhombic ε-(Al,Si)(4)Cr phase has been determined by single-crystal X-ray diffraction analysis: Pbnm (No. 62), a = 3.4477(4) nm. b = 2.0098(6) nm, c = 1.2467(6) nm, V= 8.6386(2) nm(3), Pearson symbol oP576-5.6, Z = 8, Mr = 2302.68. Experimental composition Al72.1Si7.6Cr20.3. Formula sum Al50.94Si5.45Cr14.9, i.e., Al71.45Si7.64Cr20.91 or (A1,Si)(79.09)Cr-20.91, very close to (Al,Si)(4)Cr. Dx = 3.541 g/cm(3), F(0 0 0) = 877 λ(Mo Kα) = 0.071073 nm, μ = 4.798 mm(-1), T = 293 ± 2 K. Final R = 0.0632 for 9698 reflections with F-o > 4σ(F-o) and 0.0852 for all 13,087 reflections, goodness of fit S = 1.056. There are 94 (62 Al + 8 Si + 24 Cr) independent atomic positions in the unit-cell, of which 6 Al, 5 Si and 21 Cr atom sites have icosahedral coordination. Interatomic distances cover the ranges of 0.2537-0.2840 nm, 0.2287-0.2978 nm and 0.2487-0.3060 nm for Cr-Cr, Cr-Al(Si) and AI(Si)-Al(Si) atomic pairs, respectively. The structure of ε'-(Al,Si)(4)Cr is characterized by a layer structure consisting of PFP(PFP)' layers stacked along the c-axis, where F and P denote flat and puckered layers, respectively, and (PFP)' is related to PFP by a 21 rotation. The icosahedral clusters and their arrangements in the primitive ε' are identical to those in the parent structure of ε-Al4Cr (Bbmm) and similar to a number of hexagonal and orthorhombic Al∼ 4TM (transition metals) including the hexagonal μ-Al4Cr/μ-Al4Mn (P6(3)/mmc). © 2004 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/35404]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | He, ZB,Kuo, KH. Crystal structure of the primitive orthorhombic epsilon '-(Al,Si)(4)Cr phase[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2005,395(1-2):117. |
| APA | He, ZB,&Kuo, KH.(2005).Crystal structure of the primitive orthorhombic epsilon '-(Al,Si)(4)Cr phase.JOURNAL OF ALLOYS AND COMPOUNDS,395(1-2),117. |
| MLA | He, ZB,et al."Crystal structure of the primitive orthorhombic epsilon '-(Al,Si)(4)Cr phase".JOURNAL OF ALLOYS AND COMPOUNDS 395.1-2(2005):117. |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。