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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/2606

Title: Microwave heated chemical vapor infiltration: densification mechanism of SiCf/SiC composites
Authors: Jaglin, D.
Binner, J.G.P.
Vaidhyanathan, Bala
Pentice, C.
Shatwell, B.
Grant, D.
Issue Date: 2006
Publisher: © American Ceramic Society
Citation: JAGLIN et al, 2006. Microwave heated chemical vapor infiltration: densification mechanism of SiCf/SiC composites. Journal of the American Ceramic Society, 89(9), pp. 2710–2717
Abstract: Silicon carbide fiber-reinforced silicon carbide matrix composites (SiCf/SiC) have been produced using microwave heated chemical vapor infiltration. Preferential densification of the composite from the inside out was clearly observed. Although an average relative density of only 55% was achieved in 24 h, representative of an B26% increase over the initial fiber vol%, the center of the preform densified to 73% of the theoretical. The densification mechanisms were investigated using X-ray absorptiometry and scanning electron microscopy. The initial inverse temperature profile obtained, which was found to result in the efficient filling of the intratow porosity, although not the intertow porosity, flattened out after approximately 6 h as the densification front moved outward toward the edges. Although not investigated directly, the evidence suggested that this was caused by changes in both the thermal conductivity and microwave absorption characteristics as the samples densified.
Description: This is Restricted Access. This article was published in the journal, Journal of the American Ceramic Society [© Blackwell] and is available at: www.blackwellpublishing.com/jace.
URI: https://dspace.lboro.ac.uk/2134/2606
ISSN: 1551-2916
Appears in Collections:Closed Access (Materials)

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