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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/1211

Title: In-situ reaction sintering of porous mullite-bonded silicon carbide, its mechanical behavior and high temperature applications
Authors: BARDHAN, N
BHARGAVA, P
Keywords: aqueous suspension
ceramics
fabrication
Issue Date: 2009
Publisher: AMER CERAMIC SOC
Citation: MECHANICAL PROPERTIES AND PROCESSING OF CERAMIC BINARY,TERNARY, AND COMPOSITE SYSTEMS,29(2)127-140
Abstract: The purpose of this work was to study reaction bonding technique as an effective way to produce porous silicon carbide ceramics. These can be tailored to have near-zero dimensional change while sintering, high service temperature under load and excellent thermal shock resistance. Sintered porous mullite-bonded silicon carbide was produced having an open porosity of 20-25%. XRD and SEM were used to confirm formation of the mullite phase and to Study the sample microstructure. Rectangular bars of the material made using the slip-casting method were tested for thermal shock resistance as a function of the critical quench temperature difference the samples could withstand. Cyclic quench tests carried out from 1000 degrees C to 5 degrees C showed a loss in elastic (Young's) modulus of the order of 40% of the initial value in the first 6-8 cycles. Further thermal cycling did not have a significant influence on the elastic modulus. The possibility of the use of porous mullite-bonded silicon carbide in various metal-melting/casting applications has been investigated.
URI: http://dx.doi.org/10.1002/9780470456361.ch13
http://dspace.library.iitb.ac.in/xmlui/handle/10054/14404
http://hdl.handle.net/100/1211
ISBN: 978-0-470-34492-7
ISSN: 0196-6219
Appears in Collections:Proceedings papers

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