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Silicon Effects on Properties of Melt Infiltrated SiC/SiC CompositesSilicon effects on tensile and creep properties, and thermal conductivity of Hi-Nicalon SiC/SiC composites have been investigated. The composites consist of 8 layers of 5HS 2-D woven preforms of BN/SiC coated Hi-Nicalon fiber mats and a silicon matrix, or a mixture of silicon matrix and SiC particles. The Hi-Nicalon SiC/silicon and Hi-Nicalon SiC/SiC composites contained about 24 and 13 vol% silicon, respectively. Results indicate residual silicon up to 24 vol% has no significant effect on creep and thermal conductivity, but does decrease the primary elastic modulus and stress corresponding to deviation from linear stress-strain behavior.
Document ID
20000053472
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Bhatt, Ramakrishna T.
(Army Research Lab. Cleveland, OH United States)
Gyekenyesi, John Z.
(Ohio Aerospace Inst. Brook Park, OH United States)
Hurst, Janet B.
(NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
September 7, 2013
Publication Date
May 1, 2000
Subject Category
Composite Materials
Report/Patent Number
NASA/TM-2000-210034
NAS 1.15:210034
E-12231
Meeting Information
Meeting: Composites, Advanced Ceramics Materials and Structures
Location: Cocoa Beach, FL
Country: United States
Start Date: January 23, 2000
End Date: January 28, 2000
Sponsors: American Ceramic Society
Funding Number(s)
PROJECT: RTOP 714-04-30
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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