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@article{1781858,
author = {Zelenka, František and Strádal, Jakub and Brož, Pavel and Vřešťál, Jan and Buršík, Jiří and Zemanová, Adéla and Rogl, Gerda and Rogl, Peter},
article_location = {Oxford},
article_number = {June},
doi = {http://dx.doi.org/10.1016/j.calphad.2021.102258},
keywords = {Thermoelectric materials; Skutterudites; Differential thermal analysis; Knudsen effusion method; Analytical scanning electron microscopy},
language = {eng},
issn = {0364-5916},
journal = {Calphad},
title = {Study of thermal stability of n-type skutterudites Sr0.07Ba0.07Yb0.07Co4Sb12 by differential thermal analysis and Knudsen effusion method},
url = {https://doi.org/10.1016/j.calphad.2021.102258},
volume = {73},
year = {2021}
}
TY - JOUR
ID - 1781858
AU - Zelenka, František - Strádal, Jakub - Brož, Pavel - Vřešťál, Jan - Buršík, Jiří - Zemanová, Adéla - Rogl, Gerda - Rogl, Peter
PY - 2021
TI - Study of thermal stability of n-type skutterudites Sr0.07Ba0.07Yb0.07Co4Sb12 by differential thermal analysis and Knudsen effusion method
JF - Calphad
VL - 73
IS - June
SP - 102258
EP - 102258
PB - Pergamon-Elsevier Science Ltd
SN - 03645916
KW - Thermoelectric materials
KW - Skutterudites
KW - Differential thermal analysis
KW - Knudsen effusion method
KW - Analytical scanning electron microscopy
UR - https://doi.org/10.1016/j.calphad.2021.102258
N2 - With a high figure of merit, ZT, described in detail in the introduction, multi-filled CoSb3 skutterudites attract attention for their use as thermoelectric materials. In this work, the thermal and phase stability of n-type skutterudites, Sr0.07Ba0.07Yb0.07Co4Sb12, prepared by ball milling, hot pressing and high-pressure torsion or by combinations thereof, with ZT values of about 1.4, have been studied via differential thermal analysis and Knudsen effusion method. The results from evaporation of antimony, strontium, barium and ytterbium as the volatile elements and those from phase transformation measurements are presented. The information, supported by microstructure investigation and measurement of diffusion profiles, is summarized and the long-term operation stability of the studied bulk and nano-structured thermoelectrics is evaluated. Almost no strontium, barium and ytterbium evaporation and only a slight evaporation of antimony demonstrate a long-term operation stability of the bulk and nano-structured thermoelectrics investigated.
ER -
ZELENKA, František, Jakub STRÁDAL, Pavel BROŽ, Jan VŘEŠŤÁL, Jiří BURŠÍK, Adéla ZEMANOVÁ, Gerda ROGL a Peter ROGL. Study of thermal stability of n-type skutterudites Sr0.07Ba0.07Yb0.07Co4Sb12 by differential thermal analysis and Knudsen effusion method. \textit{Calphad}. Oxford: Pergamon-Elsevier Science Ltd, 2021, roč.~73, June, s.~102258-102263. ISSN~0364-5916. Dostupné z: https://dx.doi.org/10.1016/j.calphad.2021.102258.
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