Solid-state synthesis of magnesium base thermoelectric alloys via bulk mechanical alloying

Tatsuhiko Aizawa, Renbo Song

Research output: Contribution to journalConference article

Abstract

Magnesium binary and ternary alloy systems have been popular as a thermoelectric light-weight alloy to be working in the medium temperature range. The solid-state reactivity via the bulk mechanical alloying is applied to yield these types of alloys. The diffusion-controlled solid-state synthesis is first stated as a process to yield a binary compound, Mg:X (X = Ge, Sn and Pb). This processing is further applied to directly synthesize several ternary thermoelectric alloys Mg2Si1-xGex, Mg 2Si1-ySny and Mg2Sn 1-zPbz for 0.0 < x, y, z < 1.0 and to evaluate their thermoelectric properties. Hot pressing is used to make full-dense billets and samples for thermoelectric measurement. The effect of germanium and tin contents on their Seebeck coefficient and band-gap is investigated to describe the p-n transition behavior and to understand the change of electric structure with solid solution formation.

Original languageEnglish
Pages (from-to)205-210
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Volume980
Publication statusPublished - 2007 Jul 2
Event2006 MRS Fall Meeting - Boston, MA, United States
Duration: 2006 Nov 272006 Nov 30

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Solid-state synthesis of magnesium base thermoelectric alloys via bulk mechanical alloying'. Together they form a unique fingerprint.

  • Cite this