ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Fundamental studies on the thermoelectricity have been mainly done in the pseudo binarysystems of Mg2Si – Mg2Ge – Mg2Sn. In recent years, their thermoelectricity is revisited becauseof light-weight, low initial const and short turning back time in addition to high potential in figureof-merit for ZT approaching to unity or more. Conventional melting and solidification, or, normalPM 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 semiconductivematerials with Mg2Si1-xGex and Mg2Si1-ySny for 0 〈 x, y 〈 1 and to investigate theirthermoelectric materials. Since Mg2Si is n-type and both Mg2Ge and Mg2Sn are p-type, pntransitiontakes place at the specified range of germanium content, x, and tin content, y. Throughoptimization of chemical composition, solid-solution type thermoelectric semi-conductive materialsare designed both for n- and p-type materials. In addition, appropriate doping condition can besearched in the specified range of x and y
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1553.pdf
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