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On the melt infiltration of copper coated silicon carbide with an aluminium alloyPressure-assisted infiltration of porous compacts of Cu coated and uncoated single crystals of platelet shaped alpha (hexagonal) SiC was used to study infiltration dynamics and particulate wettability with a 2014 Al alloy. The infiltration lengths were measured for a range of experimental variables which included infiltration pressure, infiltration time, and SiC size. A threshold pressure (P(th)) for flow initiation through compacts was identified from an analysis of infiltration data; P(th) decreased while penetration lengths increased with increasing SiC size (more fundamentally, due to changes in interparticle pore size) and with increasing infiltration times. Cu coated SiC led to lower P(th) and 60-80 percent larger penetration lengths compared to uncoated SiC under identical processing conditions.
Document ID
19930027335
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
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
January 1, 1992
Publication Information
Publication: Composites Manufacturing
Volume: 3
Issue: 2
ISSN: 0956-7143
Subject Category
Mechanical Engineering
Accession Number
93A11332
Distribution Limits
Public
Copyright
Other

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