We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Microstructure and thermoelectric properties of tungsten trioxide ceramics doped with a low amount of terbium dioxide.
- Authors
Gan, Yingjie; Dong, Xiang; Peng, Shujie; Dong, Liang; Wang, Yu
- Abstract
The effect of the nonstoichiometric compound terbium dioxide (TbO) on the thermoelectric properties of tungsten trioxide (WO) ceramics was investigated. Among the sintered ceramics, the sample doped with 0.1 mol% TbO showed the maximum grain size and density. Doping with TbO also increased the electrical conductivity ( σ) of the ceramics by about two orders of magnitude, and the sample doped with 0.1 mol% TbO showed the highest electrical conductivity. The absolute value of Seebeck coefficient (| S|) of the doped samples increased as well. Consequently, the power factor ( σs) markedly increased. The sample doped with 2.0 mol% TbO demonstrated the maximum σs of 2.88 μW m K at 973 K, which was larger than the highest recorded σs for WO ceramics (2.71 μW m K at 1,023 K). In addition, the low-doped sample (0.1 mol%) exhibited excellent thermoelectric properties.
- Subjects
METAL microstructure; THERMOELECTRICITY; TUNGSTEN trioxide; CERAMIC metals; DOPED semiconductors; TERBIUM; STOICHIOMETRY; SINTERING
- Publication
Journal of Materials Science: Materials in Electronics, 2013, Vol 24, Issue 10, p4001
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-013-1353-5