The high temperature thermoelectric performances of Zr0.5Hf0.5Ni0.8Pd0.2Sn0.99Sb0.01 alloy with nanophase inclusions

被引：121

作者：

Chen, LD ^{[1
]}

Huang, XY ^{[1
]}

Zhou, M ^{[1
]}

Shi, X ^{[1
]}

Zhang, WB ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2006年 / 99卷 / 06期

关键词：

D O I：

10.1063/1.2180432

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Zr0.5Hf0.5Ni0.8Pd0.2Sn0.99Sb0.01/ZrO2 nanocomposites have been prepared by spark plasma sintering technique. The thermoelectric properties were measured in the temperature range of 300-900 K. Thermal conductivity for the nanocomposites is considerably reduced, because the nanophase scatters the thermal phonons which transport most of the heat in the ZrNiSn-based alloy. Seebeck coefficient for the nanocomposites is enhanced due to the potential barrier scattering. The dimensionless figure of merit ZT is improved, with ZT approximate to 0.75 at 800 K for the samples containing 9 vol % ZrO2 nanoinclusions. The results obtained suggest that considerable improvements in the thermoelectric figure of merit may be obtainable by inducing appropriate nanoinclusions into the matrix.

引用

页数：6

共 26 条

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