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

Tatsuhiko Aizawa, Renbo Song

研究成果: Conference article査読

抄録

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.

本文言語English
ページ(範囲)205-210
ページ数6
ジャーナルMaterials Research Society Symposium Proceedings
980
出版ステータスPublished - 2007 7 2
イベント2006 MRS Fall Meeting - Boston, MA, United States
継続期間: 2006 11 272006 11 30

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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