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Hot-pressed TiB2-10 wt.% TiSi2 ceramic with extremely good thermal transport properties at elevated temperatures (up to 1273 K)

Golla, Brahma Raju and Basu, Bikramjit (2012) Hot-pressed TiB2-10 wt.% TiSi2 ceramic with extremely good thermal transport properties at elevated temperatures (up to 1273 K). In: SCRIPTA MATERIALIA, 68 (1). pp. 79-82.

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Official URL: http://dx.doi.org/10.1016/j.scriptamat.2012.09.013

Abstract

This contribution reports and analyses the high thermal transport property of hot-pressed TiB2-10 wt.% TiSi2 ceramics. Depending on the test temperature, the thermal conductivity values of the TiB2 composite (which range from 89 to 122W m(-1) K-1) are determined to be 18-25% higher than that of monolithic TiB2. The thermal transport properties are analyzed in terms of electronic and phonon contributions. The electronic contribution is the major component of the thermal conductivity of TiB2 and comparable contributions from both electronic and phonon components are observed for the TiB2-TiSi2 composite. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to PERGAMON-ELSEVIER SCIENCE LTD, ENGLAND
Keywords: TiB2;TiSi2;Ti5Si3;Thermal diffusivity;Thermal conductivity
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Francis Jayakanth
Date Deposited: 21 Dec 2012 03:53
Last Modified: 21 Dec 2012 03:53
URI: http://eprints.iisc.ac.in/id/eprint/45529

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