Enhanced thermoelectric and mechanical properties of Te-substituted skutterudite via nano-TiN dispersion

被引：50

作者：

Duan, Bo ^{[1
]}

Zhai, Pengcheng ^{[1
]}

Wen, Pengfei ^{[2
]}

Zhang, Su ^{[2
]}

Liu, Lisheng ^{[1
]}

Zhang, Qingjie ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

[2] Wuhan Univ Technol, Dept Engn Struct & Mech, Wuhan 430070, Peoples R China

来源：

SCRIPTA MATERIALIA | 2012年 / 67卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Semiconductor; Nanocomposite; Thermoelectric properties; Mechanical properties; YOUNGS MODULUS; POISSONS RATIO; SHEAR MODULUS; COSB3; CE0.9FE3.5CO0.5SB12; FABRICATION; COMPOSITE; FIGURE; MERIT;

D O I：

10.1016/j.scriptamat.2012.05.028

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nano-TiN dispersed CoSb2.875Te0.125 skutterudite composites are prepared by spark plasma sintering. It is found that the TiN particles dispersed almost evenly and most were embedded in the matrix. The addition of nano-TiN plays an effective role in reducing the lattice thermal conductivity and enhancing the dimensionless figure of merit of the samples. Furthermore, the flexural strength and the fracture toughness of the nanocomposites (1.0 vol.%) are improved by 31 and 40%, respectively, compared with the TiN-free samples. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：372 / 375

页数：4

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