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Sic Reinforced-Mosi2 Alloy Matrix Composites

Published online by Cambridge University Press:  21 February 2011

J. J. Petrovic ,
R. E. Honnell  and
A. K. Vasudevan
J. J. Petrovic
Affiliation:
Los Alamos National Laboratory, Group MST-4, Los Alamos, NM 87545
R. E. Honnell
Affiliation:
Los Alamos National Laboratory, Group MST-4, Los Alamos, NM 87545
A. K. Vasudevan
Affiliation:
Office of Naval Research, Code 1216, 800 N. Quincy St., Arlington, VA 22217-5000
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Abstract

MoSi2 based composites possess significant potential as high temperature structural materials. The present investigation constitutes an initial study of the fabrication and properties of MoSi2/silicide alloys and SiC particle reinforced-MoSi2 /silicide alloy matrix composites. Alloying disilicides (WSi2, Nb5Si2, Ta5Si2 ) and trisilicides (Mo5 Si3, W5Si3, Nb5Si3, Ta5Si3, Ti5Si3 ) were examined. Results indicated that at the 50/50 mole % alloying level, MoSi2 formed solid solutions with the alloying disilicides. Reaction of the MoSi2 /TaSi2 alloy with SiC was observed. An initial assessment of 50/50 mole % disilicide alloy oxidation behavior suggested an oxidation resistance inferior to that of pure MoSi2.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 194: Symposium R – Intermetallic Matrix Composites I , 1990 , 123
Copyright
Copyright © Materials Research Society 1990

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References

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