Dilatometric Analysis of the Sintering Behavior of Bi2Te3 Thermoelectric Powders

• Autorzy: Han Ju-Yeon , Byun Jong Min , Lee Young-In , Choi Byung Joon , Kim Hogyoung , Oh Sung-Tag

Identyfikatory

DOI

10.24425/amm.2020.133227

• Języki publikacji: EN

Abstrakty

EN

The sintering behavior of p-type bismuth telluride powder is investigated by means of dilatometric analysis. The alloy powders, prepared by ball milling of melt-spun ribbons, exhibit refined and flake shape. Differential thermal analysis reveals that the endothermic peak at about 280°C corresponds to the melting of bismuth, and peaks existing between 410°C and 510°C are presumably due to the oxidation and crystallization of the powder. The shrinkage behavior of ball-milled powders was strongly dependent of heating rate by the thermal effect exerted on specimens. In the case of 2°C/min, the peak temperature for the densification is measured at 406°C, while the peak temperature at a heating rate of 20°C/min is approximately 443°C. The relative density of specimen pressureless-sintered at 500°C exhibited relatively low value, and thus further study is required in order to increase the density of sintered body.

Słowa kluczowe

EN

Bi2Te3; dilatometric analysis; sintering behavior; microstructure

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2020
• Tom: Vol. 65, iss. 3
• Strony: 1117--1120
• Opis fizyczny: Bibliogr. 11 poz., fot., rys.

Twórcy

autor

Han Ju-Yeon

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of Korea

autor

Byun Jong Min

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of Korea

autor

Lee Young-In

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of Korea

autor

Choi Byung Joon

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of Korea

autor

Kim Hogyoung

• Seoul National University of Science and Technology, Department of Visual Optics, Seoul 01811, Republic of Korea

autor

Oh Sung-Tag

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of Korea

Bibliografia

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Uwagi

EN

1. This study was supported by the Advanced Research Project funded by the SeoulTech (Seoul National University of Science and Technology).

PL

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).