ID | 116402 |
Author |
Asai, Jun
Tokushima University
Bumrungpon, Mongkol
Tokushima University
Tsubochi, Toshiya
Tokushima University
Kanaya, Takayuki
Tokushima University
Tachii, Masaya
Tokushima University
Maeda, Toshiki
Tokushima University
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Keywords | Hot pressing
Milling
Electrical properties
Thermal conductivity
Zirconia
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Content Type |
Journal Article
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Description | As a thermoelectric material, Bi0.3Sb1.7Te3.0+x (x = 0‒0.05) was fabricated by mechanical alloying using yttria-stabilized zirconia (YSZ) ceramic balls and vessels, followed by hot pressing. The effects of the added tellurium on the thermoelectric properties of Bi0.3Sb1.7Te3.0 fabricated with YSZ milling media were investigated. All sintered samples were isotropic and showed p-type conduction. The tellurium solid-solubility limit for Bi0.3Sb1.7Te3.0 was determined to be x = 0.01 by differential thermal analysis (DTA). The solid-solubility limit of the sample fabricated using YSZ was narrower than that of the congener prepared with Si3N4 balls and stainless-steel metal vessels. Among the evaluated compositions, the Bi0.3Sb1.7Te3.01 sintered disk had the highest dimensionless figure of merit, ZT = 1.30, at room temperature. This value was superior to that of Bi0.3Sb1.7Te3.0+x fabricated using metal vessels. Thus, selection of the milling media affected the optimum doping amount and maximum ZT.
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Journal Title |
Journal of the European Ceramic Society
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ISSN | 09552219
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NCID | AA10737208
AA11533804
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Publisher | Elsevier
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Volume | 41
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Issue | 16
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Start Page | 188
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End Page | 194
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Published Date | 2021-09-10
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Rights | © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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EDB ID | |
DOI (Published Version) | |
URL ( Publisher's Version ) | |
FullText File | |
language |
eng
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TextVersion |
Author
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departments |
Science and Technology
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