Enhancement of the high-temperature thermoelectric performance of Bi2Ba2Co2Ox ceramics

SCRIPTA MATERIALIA

卷:68

Article

Constantinescu, G.¹  Rasekh, Sh.¹  Torres, M. A.²  Madre, M. A.¹  Diez, J. C.¹  Sotelo, A.¹ 

[1] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, Zaragoza 50018, Spain

[2] Univ Zaragoza, Dept Ingn Diseno & Fabricac, Zaragoza 50018, Spain

关键词: Directional solidification;    Electrical resistivity;    Electroceramics;    Thermoelectric materials;    Cobaltites;   

DOI  :  10.1016/j.scriptamat.2012.09.014

来源: Elsevier

【 摘 要 】

Bi2Ba2Co2Ox thermoelectric ceramics were textured from the melt using the laser floating zone method, at a growth rate of 5 mm h(-1). The microstructure showed good grain alignment with the growth axis. These microstructural features are reflected in the thermoelectric performance, with a significant increase in the power factor values, reaching similar to 0.4 mW K-2 m(-1) at 650 degrees C, much higher than the values typically obtained in these materials. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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