Article ID Journal Published Year Pages File Type
8001095 Journal of Alloys and Compounds 2014 16 Pages PDF
Abstract
Lead-free p-type AgSnmSbTem+2 (m = 2, 4, 10, 18) compound thermo-electric materials were fabricated by a process combining mechanical alloys and spark plasma sintering. The electrical and thermal transport properties of samples with different m values in a wide range were investigated for compositional optimization with the most enhanced thermoelectric performance. It was found that both electrical and thermal conductivity increase with increasing m value, but the Seebeck coefficient shows a maximum at m = 4, resulting in an optimal composition with a relatively high thermoelectric figure of merit up to ZT ≈ 0.8 at 723 K. This work also confirmed that MA-SPS processing could be applied to the synthesis of AgSnmSbTem+2 compound thermoelectric materials.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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