Journal
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volume 185, Issue -, Pages 45-52Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mseb.2014.02.005
Keywords
Thermoelectric generator; Segmented pi module; Mg2Si; HMS; Specific power density
Funding
- AFOSR MURI grant [FA9550-06-01-0326]
- AFOSR DURIP grant [FA9550-09-1-0587]
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A segmented thermoelectric (TE) generator was designed with higher temperature segments composed of n-type Mg2Si and p-type higher manganese silicide (HMS) and lower temperature segments composed of n- and p-type Bi-Te based compounds. Since magnesium and silicon based TE alloys have low densities, they produce a TE module with a high specific power density that is suitable for airborne applications. A two-pair segmented pi-shaped TE generator was assembled with low contact resistance materials across bonding interfaces. The peak specific power density of this generator was measured at 42.9 W/kg under a 498 degrees C temperature difference, which has a good agreement with analytical predictions. (C) 2014 Elsevier B.V. All rights reserved.
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