Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1499645 | Scripta Materialia | 2012 | 4 Pages |
Abstract
High-performance thermoelectric half-Heusler alloys with nominal compositions of Ti0.37Zr0.37Hf0.26NiSn were investigated. Scanning electron microscopy compositional mapping showed a remarkable separation of Ti and Zr + Hf rich phases, while Ni and Sn are homogeneously distributed. Additionally, a nanoscale phase separation of different half-Heusler phases was observed. The thermoelectric properties of the compounds were measured at 2 K < T < 900 K and showed a high figure of merit, reaching a value of ZT = 1 at 725 K.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
S. Populoh, M.H. Aguirre, O.C. Brunko, K. Galazka, Y. Lu, A. Weidenkaff,