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

Mukhopadhyay, Amartya and Venkateswaran, T and Basu, Bikramjit (2013) Spark plasma sintering may lead to phase instability and inferior mechanical properties: A case study with TiB2. In: SCRIPTA MATERIALIA, 69 (2). pp. 159-164.

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Official URL: http://dx.doi.org/10.1016/j.scriptamat.2013.02.027...

Abstract

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.

Item Type: Journal Article
Additional Information: Copyright of this article is belongs to PERGAMON-ELSEVIER SCIENCE LTD
Keywords: TiB2; TiB; Spark plasma sintering; Electric field assisted reaction; Mechanical properties
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Id for Latest eprints
Date Deposited: 04 Sep 2013 10:30
Last Modified: 04 Sep 2013 10:30
URI: http://eprints.iisc.ac.in/id/eprint/47054

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