| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9803639 | Journal of Alloys and Compounds | 2005 | 4 Pages |
Abstract
The effect of spark plasma sintering (SPS) temperature on thermoelectric properties of (Ti,Zr,Hf)NiSn half-Heusler compounds were studied. Four kinds of samples were prepared: an arc-melted sample, a sample sintered at 973Â K by SPS (SPS-973), a sample sintered at 1173Â K by SPS (SPS-1173), and a sample sintered at 1373Â K by SPS (SPS-1373). The power factor of SPS-1173 is several % lower than that of the arc-melted sample, but the thermal conductivity is reduced to 70% of that of the arc-melted sample. As a result, the dimensionless figure of merit ZT of SPS-1173 is improved and it reaches 0.43 at 760Â K.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Ken Kurosaki, Takuji Maekawa, Hiroaki Muta, Shinsuke Yamanaka,