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Spark plasma sintering may lead to phase instability and inferior mechanical properties: A case study with TiB2

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Title Spark plasma sintering may lead to phase instability and inferior mechanical properties: A case study with TiB2
 
Creator MUKHOPADHYAY, A
VENKATESWARAN, T
BASU, B
 
Subject TiB2
TiB
Spark plasma sintering
Electric field assisted reaction
Mechanical properties
MONOLITHIC TIB2
SYSTEM SPS
COMPOSITES
MICROSTRUCTURE
CONSOLIDATION
TEMPERATURE
CERAMICS
FIELD
PRESSURE
 
Description In contrast to the widely reported beneficial aspects of spark plasma sintering in developing materials with better properties, we report here two interesting aspects recorded with difficult-to-sinter titanium diboride: (a) in situ formation of second phase (TiB) and (b) inferior hardness (by similar to 30%) and elastic modulus (by similar to 20%) for spark plasma sintered TiB2, with respect to hot pressed TiB2. The formation of TiB is discussed with reference to the enhanced reaction kinetics in the presence of pulsed electric field. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2014-10-15T15:08:39Z
2014-10-15T15:08:39Z
2013
 
Type Article
 
Identifier SCRIPTA MATERIALIA, 69(2)159-164
http://dx.doi.org/10.1016/j.scriptamat.2013.02.027
http://dspace.library.iitb.ac.in/jspui/handle/100/15120
 
Language en