Synthesis by mechanical alloying and thermoelectric properties of Cu2Te

Sridharan, K and Chattopadhyay, K (1998) Synthesis by mechanical alloying and thermoelectric properties of Cu2Te. In: Journal of Alloys and Compounds, 264 (1-2). pp. 293-298.

PDF Synthesis_by_mechanical_alloying.pdf - Published Version Restricted to Registered users only Download (546kB) | Request a copy

Abstract

Hexagonal Cu-2 Te has been synthesised by mechanical alloying from elemental powders. The milling time required for the synthesis is longer than that reported for other tellurides. The mechanical grinding of the bulk Cu2Te obtained by the melting route does not change the structure. Prolonged milling as well as grinding beyond 40 h lead to a decrease in grain size to nanometer level. The cold compaction of milled or ground powders exhibit much smaller Seebeck coefficient (thermopower). However, cold compaction of samples milled for longer time (>150 h) lead to the thermopower values close to that of the bulk indicating significant improvement of rheological properties at room temperature for powders milled for long times.

Item Type:	Journal Article
Publication:	Journal of Alloys and Compounds
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	tellurides;mechanical alloying;thermoelectric properties; Cu2Te.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	30 Dec 2009 11:06
Last Modified:	19 Sep 2010 05:28
URI:	http://eprints.iisc.ac.in/id/eprint/19389

Actions (login required)

View Item