Effect of Ag additions on the Bi1.6Pb0.4Sr2Co1.8Ox thermoelectric properties

被引：5

作者：

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

Rasekh, Sh. ^{[1
]}

Constantinescu, G. ^{[1
]}

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

Madre, M. A. ^{[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, Spain

来源：

BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO | 2013年 / 52卷 / 02期

关键词：

Processing; Electrical properties; Microstructure; Thermopower; Cobaltites; ELECTRICAL-PROPERTIES; SINGLE-CRYSTAL; MICROSTRUCTURE; PERFORMANCES; IMPROVEMENT; CERAMICS; MAGNETORESISTANCE; FABRICATION; COBALTITES; CA3CO4O9;

D O I：

10.3989/cyv.122013

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Bi1.6Pb0.4Sr2Co1.8Ox thermoelectric ceramics with small Ag additions (0, 1, and 3 wt.%) have been successfully produced by a sol-gel method via nitrates. Microstructure has shown a reduction on the amount of secondary phases and an increase on the bulk density with increasing Ag contents. The microstructural evolution, as a function of Ag content, is confirmed with the electrical resistivity values which show an important decrease for the 3 wt.% Ag samples, leading to maximum power factor values of about 0.025 mW/K-2.m at room temperature, which is about two times higher than the obtained for the Ag-free sintered samples.

引用

页码：93 / 97

页数：5

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