Thermoelectric material design in pseudo binary systems of Mg2Si - Mg2Ge - Mg2Sn on the powder metallurgy route

Tatsuhiko Aizawa, Renbo Song, Atsushi Yamamoto

研究成果: Conference contribution


Fundamental studies on the thermoelectricity have been mainly done in the pseudo binary systems of Mg2Si - Mg2Ge - Mg2Sn. In recent years, their thermoelectricity is revisited because of light-weight, low initial const and short turning back time in addition to high potential in figure-of-merit for ZT approaching to unity or more. Conventional melting and solidification, or, normal PM routes fail in precise, wide-range control of chemical composition and microstructure control. New PM route via bulk mechanical alloying is developed to fabricate the solid solution semi-conductive materials with Mg2Si1-xGex and Mg 2Si1-ySny for 0 < x, y < 1 and to investigate their thermoelectric materials. Since Mg2Si is n-type and both Mg2Ge and Mg2Sn are p-type, pntransition takes place at the specified range of germanium content, x, and tin content, y. Through optimization of chemical composition, solid-solution type thermoelectric semi-conductive materials are designed both for n- and p-type materials. In addition, appropriate doping condition can be searched in the specified range of x and y.

ホスト出版物のタイトルProgress in Powder Metallurgy - Proceedings of the 2006 Powder Metallurgy World Congress and Exhibition (PM 2006)
出版ステータスPublished - 2007 12 1
イベント2006 Powder Metallurgy World Congress and Exhibition, PM 2006 - Busan, Korea, Republic of
継続期間: 2006 9 242006 9 28


名前Materials Science Forum
番号PART 2


Conference2006 Powder Metallurgy World Congress and Exhibition, PM 2006
CountryKorea, Republic of

ASJC Scopus subject areas

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

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