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Observations on infiltration of silicon carbide compacts with an aluminium alloyThe melt infiltration of ceramic particulates permits an opportunity to observe such fundamental materials phenomena as nucleation, dynamic wetting and growth in constrained environments. Experimental observations are presented on the infiltration behavior and matrix microstructures that form when porous compacts of platelet-shaped single crystals of alpha- (hexagonal) silicon carbide are infiltrated with a liquid 2014 Al alloy. The infiltration process involved counter gravity infiltration of suitably tamped and preheated compacts of silicon carbide platelets under an external pressure in a special pressure chamber for a set period, then by solidification of the infiltrant metal in the interstices of the bed at atmospheric pressure.
Document ID
19930028359
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Asthana, R. (Cleveland State Univ.; NASA, Lewis Research Center OH, United States)
Rohatgi, P. K. (Wisconsin Univ. Milwaukee, United States)
Date Acquired
August 15, 2013
Publication Date
October 1, 1992
Publication Information
Publication: Journal of Materials Science Letters
Volume: 11
Issue: 19
ISSN: 0261-8028
Subject Category
COMPOSITE MATERIALS
Distribution Limits
Public
Copyright
Other