Aluminum infiltration into Molybdenum Silicide preforms

Bhattacharya, Anup K and Bhaskaran, T A and Ramasesha, Sheela K (2002) Aluminum infiltration into Molybdenum Silicide preforms. Communications of the American Ceramic Society, 85 (9). pp. 2364-2366. ISSN 0002-7820

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Abstract

The presence of MosSi3 in MoSi2 preforms hinders the reactive infiltration of aluminum. To understand the role of Mo5Si3, the kinetics of aluminum infiltration into pure MosSi, is studied.Irrespective of the initial composition (MoSi2 or Mo5Si3) of the preform, the final product always contains Mo(Al,Si)2. However, the aluminum content in the two cases is different: when the preform is MoSi2, the aluminum content is 14-18 at.%,and, when the preform is MosSi3, the aluminum content is 25-27 at.%. The activation energy for the reactive infiltration of aluminum into the MosSi3 preform is 26 kj/mol.

Item Type:	Journal Article
Additional Information:	Copyright for this article belongs to American Ceramic Society
Uncontrolled Keywords:	Aluminium infiltration;Molybdenum silicide performs
Subjects:	CHEMISTRY AND MATERIALS > Composite Materials
Division/Department:	Materials Science Division, Materials Science Division, Materials Science Division
Depositing User:	M/S ICAST NAL
Date Deposited:	20 Nov 2006
Last Modified:	24 May 2010 09:53
URI:	http://nal-ir.nal.res.in/id/eprint/3473

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