直近一年間の累計
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ID 116402
著者
Asai, Jun Tokushima University
Bumrungpon, Mongkol Tokushima University
Tsubochi, Toshiya Tokushima University
Kanaya, Takayuki Tokushima University
Tachii, Masaya Tokushima University
Maeda, Toshiki Tokushima University
キーワード
Hot pressing
Milling
Electrical properties
Thermal conductivity
Zirconia
資料タイプ
学術雑誌論文
抄録
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.
掲載誌名
Journal of the European Ceramic Society
ISSN
09552219
cat書誌ID
AA10737208
AA11533804
出版者
Elsevier
41
16
開始ページ
188
終了ページ
194
発行日
2021-09-10
権利情報
© 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/
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
著者版
部局
理工学系