Enhancement of the high-temperature thermoelectric performance of Bi2Ba2Co2Ox ceramics

被引：44

作者：

Constantinescu, G. ^{[1
]}

Rasekh, Sh. ^{[1
]}

Torres, M. A. ^{[2
]}

Madre, M. A. ^{[1
]}

Diez, J. C. ^{[1
]}

Sotelo, A. ^{[1
]}

机构：

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

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

来源：

SCRIPTA MATERIALIA | 2013年 / 68卷 / 01期

关键词：

Directional solidification; Electrical resistivity; Electroceramics; Thermoelectric materials; Cobaltites; LAYERED COBALTITES; MAGNETORESISTANCE; CA3CO4O9; OXIDES; POWER; SR;

D O I：

10.1016/j.scriptamat.2012.09.014

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

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.

引用

页码：75 / 78

页数：4

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