Synthesis and structure of aluminum substituted MoSi2

被引：16

作者：

Dasgupta, T

Bhattacharya, AK

Umarji, AM ^{[1
]}

机构：

[1] Indian Inst Sci, Mat Res Ctr, Bangalore 560012, Karnataka, India

[2] Natl Aerosp Labs, Div Mat, Bangalore 560017, Karnataka, India

来源：

SOLID STATE COMMUNICATIONS | 2003年 / 126卷 / 10期

关键词：

structural material; chemical synthesis; SHS; crystal structure and symmetry;

D O I：

10.1016/S0038-1098(03)00300-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Mo(Si1-x ,Al-x)(2) compositions have been prepared by a modified SHS route under pressure. The compositional phase analysis indicates a body centered tetragonal C11(b) phase below x < 0.05 substitution, above which a biphasic region of C11(b) and C40 structure coexists. Occurrence of pure hexagonal C40 phase is observed for x < 0.1. The aluminum substitution leads to a continuous increase in the lattice parameters in both these structures. In the biphasic region, redistribution of aluminum concentration takes place with the evolution of aluminum rich C40 phase as indicated by energy dispersive X-ray analysis and supported by micro-hardness measurements. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：573 / 578

页数：6

共 17 条

[1] Effect of temperature and soaking time on the synthesis of Mo(Al,Si)2 [J].