Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/6041
Title: Simple fabrication of Mg2Si thermoelectric generator by spark plasma sintering
Authors: Yang, M J
Zhang, L M
Han, L Q
Shen, Q
Wang, C B
Keywords: Mg2Si
Spark Plasma Sintering
Issue Date: Aug-2009
Publisher: CSIR
Abstract: Raw Mg and Si<b style=""> </b>powders<b style=""> </b>have been used to fabricate Mg<sub>2</sub>Si bulk thermoelectric generator by spark plasma sintering (SPS).<b style=""> </b>The<b style=""> </b>optimum parameters to synthesize pure Mg<sub>2</sub>Si are found to be 823 K-0 MPa-10 min with excessive content of 10wt% Mg from the stoichiometric Mg<sub>2</sub>Si. Mg<sub>2</sub>Si bulk has been firstly synthesized and densified simultaneously at low temperature (823 K) and high pressure (higher than 100 MPa) from the raw powder, but Mg and Si not react completely, and the sample is not very dense with some microcracks on the surface. Then, Mg and Si powders firstly reacted at 823 K-0 MPa-10 min in SPS chamber to form Mg<sub>2</sub>Si green compact, again sintered by SPS at 1023 K-20 MPa-5 min. The fabricated sample only contained Mg<sub>2</sub>Si phase with high relative density (nearly 100%).
Description: 277-280
URI: http://hdl.handle.net/123456789/6041
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.16(4) [August 2009]

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