Macrostructural influence on the thermoelectric properties of SiC ceramics

被引：26

作者：

Wei, Wei

Li, Jia-wei

Zhang, Hong-tao

Cao, Xiao-ming

Tian, Chong

Zhang, Jin-song ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

[2] Shaanxi Normal Univ, Technol, Xian 710002, Peoples R China

来源：

SCRIPTA MATERIALIA | 2007年 / 57卷 / 12期

关键词：

thermoelectric properties; foams; ceramics; macrostructure;

D O I：

10.1016/j.scriptamat.2007.08.036

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The thermoelectric properties of SiC ceramics with various macrostructures, including foams and bulks used for power generation, have been examined. SiC foam is shown to exhibit much higher ZT (a dimensionless figure of merit) than that of SiC bulk, which indicates that thermoelectric performance has strongly correlation with macrostructure. The thermoelectric properties of SiC bulk with 5 wt.% Si addition were also studied and the results show that macrostructure can have a larger effect on ZT than doping. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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页码：1081 / 1084

页数：4

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