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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.16 [2009] >
IJEMS Vol.16(4) [August 2009] >
| 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 powders have been used to fabricate Mg2Si
bulk thermoelectric generator by spark plasma sintering (SPS). The optimum parameters to synthesize pure Mg2Si are found
to be 823 K-0 MPa-10 min with excessive content of 10wt% Mg from the
stoichiometric Mg2Si. Mg2Si 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 Mg2Si
green compact, again sintered by SPS at 1023 K-20 MPa-5 min. The fabricated
sample only contained Mg2Si phase with high relative density (nearly
100%). |
| Page(s): | 277-280 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.16(4) [August 2009]
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