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Synthesis of thermoelectric Mg3Sb2 by melting and mechanical alloying

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2012, 22(4), pp.207-212
  • DOI : 10.6111/JKCGCT.2012.22.4.207
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

Kim In Ki 1

1한서대학교

Accredited

ABSTRACT

A single phase Mg3Sb2 alloy was synthesized by melting the mixture of Mg and Sb metal powders at 1173 K. The figure of merit of the Mg3Sb2 prepared by melting method increased with temperature and showed a value of 2.39 × 10−2 at 593 K. When the Mg3Sb2 powders were milled at high speed in a planetary ball mill for 12~48 h, Zintle phase (Mg3Sb2) was maintained as a main phase, but its crystallinity became deteriorated and elemental Sb phase appeared. Sb phase free Mg3Sb2 could be obtained by the mechanical alloying of high speed ball milling for 24 h using elemental Mg and Sb powder mixtures.

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