High-temperature thermoelectric properties of Ti0.5(ZrHf) 0.5-xNbxNi0.9Pd0.1Sn 0.98Sb0.02 half-Heusler alloys

Ping Jen Lee; Long Sun Chao

doi:10.1016/j.jallcom.2010.05.086

High-temperature thermoelectric properties of Ti_0.5(ZrHf) _0.5-xNb_xNi_0.9Pd_0.1Sn _0.98Sb_0.02 half-Heusler alloys

Ping Jen Lee, Long Sun Chao

Department of Engineering Science

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The effects of Nb substitution at the IV metal site on the thermoelectric properties of Ti_0.5(ZrHf)_0.5-xNb_xNi _0.9Pd_0.1Sn_0.98Sb_0.02 half-Heusler alloy compounds were investigated by measuring the electrical resistivity, Hall effect, Seebeck coefficient and thermal conductivity. Changes in its microstructure were characterized using SEM and X-ray diffraction. It was shown that the substitution of Nb for TiNiSn-based alloys led to a significant reduction in the thermal conductivity due to the increase in defects and an enhancement of the electrical conductivity. The best sample reached a ZT of 0.66 at 900 K with an Nb content of x = 0.01.

Original language	English
Pages (from-to)	192-196
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	504
Issue number	1
DOIs	https://doi.org/10.1016/j.jallcom.2010.05.086
Publication status	Published - 2010 Aug 31

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2010.05.086

Cite this

@article{cd75f48bb17e43e09dea4928c1b87a16,

title = "High-temperature thermoelectric properties of Ti0.5(ZrHf) 0.5-xNbxNi0.9Pd0.1Sn 0.98Sb0.02 half-Heusler alloys",

abstract = "The effects of Nb substitution at the IV metal site on the thermoelectric properties of Ti0.5(ZrHf)0.5-xNbxNi 0.9Pd0.1Sn0.98Sb0.02 half-Heusler alloy compounds were investigated by measuring the electrical resistivity, Hall effect, Seebeck coefficient and thermal conductivity. Changes in its microstructure were characterized using SEM and X-ray diffraction. It was shown that the substitution of Nb for TiNiSn-based alloys led to a significant reduction in the thermal conductivity due to the increase in defects and an enhancement of the electrical conductivity. The best sample reached a ZT of 0.66 at 900 K with an Nb content of x = 0.01.",

author = "Lee, {Ping Jen} and Chao, {Long Sun}",

note = "Funding Information: The work was supported by the National Science Council of Taiwan, Republic of China under contract no. NSC-98-2221-E-006-230. One of authors (P. J. Lee) would like to acknowledge Dr. Chou of the Energy and Environment Research Laboratories, ITRI for the assistance in measurement Seebeck coefficient.",

year = "2010",

month = aug,

day = "31",

doi = "10.1016/j.jallcom.2010.05.086",

language = "English",

volume = "504",

pages = "192--196",

journal = "Journal of the Less-Common Metals",

issn = "0925-8388",

publisher = "Elsevier BV",

number = "1",

}

TY - JOUR

T1 - High-temperature thermoelectric properties of Ti0.5(ZrHf) 0.5-xNbxNi0.9Pd0.1Sn 0.98Sb0.02 half-Heusler alloys

AU - Lee, Ping Jen

AU - Chao, Long Sun

N1 - Funding Information: The work was supported by the National Science Council of Taiwan, Republic of China under contract no. NSC-98-2221-E-006-230. One of authors (P. J. Lee) would like to acknowledge Dr. Chou of the Energy and Environment Research Laboratories, ITRI for the assistance in measurement Seebeck coefficient.

PY - 2010/8/31

Y1 - 2010/8/31

N2 - The effects of Nb substitution at the IV metal site on the thermoelectric properties of Ti0.5(ZrHf)0.5-xNbxNi 0.9Pd0.1Sn0.98Sb0.02 half-Heusler alloy compounds were investigated by measuring the electrical resistivity, Hall effect, Seebeck coefficient and thermal conductivity. Changes in its microstructure were characterized using SEM and X-ray diffraction. It was shown that the substitution of Nb for TiNiSn-based alloys led to a significant reduction in the thermal conductivity due to the increase in defects and an enhancement of the electrical conductivity. The best sample reached a ZT of 0.66 at 900 K with an Nb content of x = 0.01.

AB - The effects of Nb substitution at the IV metal site on the thermoelectric properties of Ti0.5(ZrHf)0.5-xNbxNi 0.9Pd0.1Sn0.98Sb0.02 half-Heusler alloy compounds were investigated by measuring the electrical resistivity, Hall effect, Seebeck coefficient and thermal conductivity. Changes in its microstructure were characterized using SEM and X-ray diffraction. It was shown that the substitution of Nb for TiNiSn-based alloys led to a significant reduction in the thermal conductivity due to the increase in defects and an enhancement of the electrical conductivity. The best sample reached a ZT of 0.66 at 900 K with an Nb content of x = 0.01.

UR - http://www.scopus.com/inward/record.url?scp=77955468782&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955468782&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2010.05.086

DO - 10.1016/j.jallcom.2010.05.086

M3 - Article

AN - SCOPUS:77955468782

VL - 504

SP - 192

EP - 196

JO - Journal of the Less-Common Metals

JF - Journal of the Less-Common Metals

SN - 0925-8388

IS - 1

ER -

High-temperature thermoelectric properties of Ti_0.5(ZrHf) _0.5-xNb_xNi_0.9Pd_0.1Sn _0.98Sb_0.02 half-Heusler alloys

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this