Synthesis and structure of aluminum substituted MoSi

Dasgupta, T and Bhattacharya, Anup K and Umarji, AM (2003) Synthesis and structure of aluminum substituted MoSi. Solid State Communications, 126. pp. 573-578.

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Mo(Si1_xAlx)2 compositions have been prepared by a modified SHS route under pressure. The compositional phase analysis indicates a body centered tetragonal C11b phase below x lt; 0.05 substitution, above which a biphasic region of C11b and C40 structure coexists. Occurrence of pure hexagonal C40 phase is observed for x gt; 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 and13; supported by micro-hardness measurements.

Item Type: Article
Additional Information: Copyright belongs to Elsevier
Uncontrolled Keywords: A. Structural material;B. Chemical synthesis;B. SHS;C. Crystal structure and symmetry
Subjects: PHYSICS > Solid-State Physics
Depositing User: Mr. N A
Date Deposited: 12 May 2006
Last Modified: 07 Aug 2015 06:06

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