Title :
Synthesis of Mg2Si1-xGex thermoelectric compound by solid phase reaction
Author :
Zhang, L.M. ; Leng, Y.G. ; Jiang, H.Y. ; Chen, L.D. ; Hirai, T.
Author_Institution :
State Key Lab. of Adv. Technol. for Mater. Synthesis & Process., Wuhan Univ. of Technol., China
Abstract :
By two-stage solid phase reaction, a series of Mg2Si 1-xGex continuous solid solutions were successfully synthesized at low temperature (823 K) for the first time. The product was single-phased without any oxide or carbide and the particle size was substantially reduced than that of the raw powders. X-ray diffraction techniques were used to explore the products´ phases and DTA to the changing tendency of heat quantity during the solid phase reaction. The influence of Ge substitution to Mg2Si1-x Gex was illustrated by the changes of lattice parameter and the existence of the complete solid solubility between Mg2Si and Mg2Ge was established, too
Keywords :
X-ray diffraction; differential thermal analysis; germanium alloys; lattice constants; magnesium alloys; particle size; silicon alloys; solid solubility; thermoelectricity; 823 K; DTA; Mg2Si1-xGex; Mg2Si1-xGex thermoelectric compound; X-ray diffraction techniques; lattice parameter; solid phase reaction; solid solubility; Argon; Laboratories; Lattices; Oxidation; Plasma temperature; Powders; Solids; Surface morphology; Thermoelectricity; X-ray diffraction;
Conference_Titel :
Thermoelectrics, 2001. Proceedings ICT 2001. XX International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-7205-0
DOI :
10.1109/ICT.2001.979876
