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MoSi2-Base CompositesAddition of 30 to 50 vol% of Si3N4 particulate to MoSi2 eliminated its low temperature catastrophic failure, improved room temperature fracture toughness and the creep resistance. The hybrid composite SCS-6/MoSi2-Si3N4 did not show any matrix cracking and exhibited excellent mechanical and environmental properties. Hi-Nicalon continuous fiber reinforced MoSi2-Si3N4 also showed good strength and toughness. A new MoSi2-base composite containing in-situ whisker-type (Beta)Si3N4 grains in a MoSi2 matrix is also described.
Document ID
20130013064
Acquisition Source
Glenn Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Hebsur, Mohan G. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 27, 2013
Publication Date
September 1, 2003
Subject Category
Composite Materials
Report/Patent Number
E-14207
Report Number: E-14207
Funding Number(s)
CONTRACT_GRANT: NCC3-1042
WBS: WBS 708-31-04
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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